carlin
/
pcb-afm-simulation-system


			
				
					
						
						
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<title>PCB轴向磁通电机设计-双转子单定子(无铁芯) - Stackup Rev</title>
<style>
    /* =========================================
       CSS 样式定义区 (保持原有样式不变)
       ========================================= */
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    /* 输入框样式 */
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    /* 结果数字样式 */
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</style>
</head>
<body>

    <header class="sticky-header">
        <div class="app-brand">
            <span class="app-title">
                <svg width="28" height="28" fill="none" stroke="currentColor" stroke-width="2.5" viewBox="0 0 24 24"><path d="M13 10V3L4 14h7v7l9-11h-7z"></path></svg>
                Axial PCB Motor Design
                <span class="version-tag">V16</span>
                <span id="saveStatus" class="save-status">已自动保存</span>
            </span>
            <span class="app-subtitle">PCB轴向磁通电机设计 </span>
        </div>
        
        <div class="hud-grid">
            <div class="hud-item">
                <div class="hud-label">额定功率</div>
                <div class="hud-value-group"><span class="hud-val" id="hud_Pnom">0</span><span class="hud-unit">W</span></div>
            </div>

            <div class="hud-item">
                <div class="hud-label">额定转矩</div>
                <div class="hud-value-group"><span class="hud-val val-highlight" id="hud_T">0.00</span><span class="hud-unit">Nm</span></div>
            </div>
            
            <div class="hud-item">
                <div class="hud-label">电机效率</div>
                <div class="hud-value-group"><span class="hud-val val-highlight" id="hud_Eff">0.0</span><span class="hud-unit">%</span></div>
            </div>
            
             <div class="hud-item">
                <div class="hud-label">总损耗</div>
                <div class="hud-value-group"><span class="hud-val val-loss" id="hud_Loss">0</span><span class="hud-unit">W</span></div>
            </div>

            <div class="hud-item">
                <div class="hud-label">预估成本</div>
                <div class="hud-value-group"><span class="hud-val val-cost" id="hud_Cost">0</span><span class="hud-unit">¥</span></div>
            </div>

            <div class="hud-item">
                <div class="hud-label">绕阻温度</div>
                <div class="hud-value-group"><span class="hud-val" id="hud_Temp">0</span><span class="hud-unit">℃</span></div>
            </div>
            
            <div class="hud-item">
                <div class="hud-label">载流校验</div>
                <div class="hud-value-group"><span class="hud-val" style="font-size:24px;" id="hud_IPC">--</span></div>
            </div>
        </div>

        <button class="btn-action" onclick="app.ui.exportExcel()">
            <svg width="18" height="18" fill="none" stroke="currentColor" stroke-width="2" viewBox="0 0 24 24"><path d="M4 16v1a3 3 0 003 3h10a3 3 0 003-3v-1m-4-4l-4 4m0 0l-4-4m4 4V4"></path></svg>
            导出结果
        </button>
    </header>

    <div class="container">
        <nav class="sidebar">
            <div class="nav-group-title">DESIGN MODULES</div>
            <button class="nav-btn active" onclick="app.ui.nav('input')">
                <svg fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M11 5H6a2 2 0 00-2 2v11a2 2 0 002 2h11a2 2 0 002-2v-5m-1.414-9.414a2 2 0 112.828 2.828L11.828 15H9v-2.828l8.586-8.586z"></path></svg>
                1. 规格与几何 (Input)
            </button>
            <button class="nav-btn" onclick="app.ui.nav('stator')">
                <svg fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M19 11H5m14 0a2 2 0 012 2v6a2 2 0 01-2 2H5a2 2 0 01-2-2v-6a2 2 0 012-2m14 0V9a2 2 0 00-2-2M5 11V9a2 2 0 012-2m0 0V5a2 2 0 012-2h6a2 2 0 012 2v2M7 7h10"></path></svg>
                2. 定子参数 (Stator)
            </button>
            <button class="nav-btn" onclick="app.ui.nav('mag')">
                <svg fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M13 10V3L4 14h7v7l9-11h-7z"></path></svg>
                3. 磁路分析 (Magnetic)
            </button>
            
            <div class="nav-group-title">ANALYSIS MODULES</div>
            <button class="nav-btn" onclick="app.ui.nav('perf')">
                <svg fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 19v-6a2 2 0 00-2-2H5a2 2 0 00-2 2v6a2 2 0 002 2h2a2 2 0 002-2zm0 0V9a2 2 0 012-2h2a2 2 0 012 2v10m-6 0a2 2 0 002 2h2a2 2 0 002-2m0 0V5a2 2 0 012-2h2a2 2 0 012 2v14a2 2 0 01-2 2h-2a2 2 0 01-2-2z"></path></svg>
                4. 性能指标 (Perf)
            </button>
            <button class="nav-btn" onclick="app.ui.nav('loss')">
                <svg fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M18.364 18.364A9 9 0 005.636 5.636m12.728 12.728A9 9 0 015.636 5.636m12.728 12.728L5.636 5.636"></path></svg>
                5. 损耗分析 (Loss)
            </button>
            <button class="nav-btn" onclick="app.ui.nav('therm')">
                <svg fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M17.657 18.657A8 8 0 016.343 7.343S7 9 9 10c0-2 .5-5 2.986-7C14 5 16.09 5.777 17.656 7.343A7.975 7.975 0 0120 13a7.975 7.975 0 01-2.343 5.657z"></path><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9.879 16.121A3 3 0 1012.015 11L11 14H9c0 .768.293 1.536.879 2.121z"></path></svg>
                6. 热分析 (Thermal)
            </button>
            <button class="nav-btn" onclick="app.ui.nav('cost')">
                <svg fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 8c-1.657 0-3 .895-3 2s1.343 2 3 2 3 .895 3 2-1.343 2-3 2m0-8c1.11 0 2.08.402 2.599 1M12 8V7m0 1v8m0 0v1m0-1c-1.11 0-2.08-.402-2.599-1M21 12a9 9 0 11-18 0 9 9 0 0118 0z"></path></svg>
                7. 成本明细 (Cost)
            </button>
            <button class="nav-btn" onclick="app.ui.nav('ipc')">
                <svg fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 12l2 2 4-4m6 2a9 9 0 11-18 0 9 9 0 0118 0z"></path></svg>
                8. 载流校验 (IPC-2152)
            </button>
        </nav>

        <main class="main-content">
            <section id="input" class="page-section active">
                <div class="section-card">
                    <h2>1. 设计规格与几何输入 (Input)</h2>
                    
                    <h3>A. 性能规格 (Specifications)</h3>
                    <table>
                        <thead>
                            <tr><th class="col-param">参数名称</th><th class="col-sym">符号</th><th class="col-val">输入值</th><th class="col-unit">单位</th><th class="col-form">计算公式 / 说明</th><th class="col-def">公式变量物理含义</th></tr>
                        </thead>
                        <tbody>
                            <tr><td>额定功率</td><td>P<sub>nom</sub></td><td><input type="number" id="P_nom" value="300" oninput="app.calculate()"></td><td>W</td><td>User Input</td><td>设计目标机械输出功率</td></tr>
                            <tr><td>额定转速</td><td>n<sub>nom</sub></td><td><input type="number" id="n_nom" value="3000" oninput="app.calculate()"></td><td>rpm</td><td>User Input</td><td>额定工作点机械转速</td></tr>
                            <tr><td>母线电压</td><td>V<sub>dc</sub></td><td><input type="number" id="V_dc" value="48" oninput="app.calculate()"></td><td>V</td><td>User Input</td><td>直流供电电压</td></tr>
                            <tr><td>极对数</td><td>p</td><td><input type="number" id="p" value="6" oninput="app.calculate()"></td><td>-</td><td>User Input</td><td><span>p</span>: 磁极对数 (总极数=2p)</td></tr>
                        </tbody>
                    </table>

                    <h3>B. 几何尺寸 (Geometry)</h3>
                    <table>
                        <thead>
                            <tr><th class="col-param">参数名称</th><th class="col-sym">符号</th><th class="col-val">输入值</th><th class="col-unit">单位</th><th class="col-form">计算公式 / 说明</th><th class="col-def">公式变量物理含义</th></tr>
                        </thead>
                        <tbody>
                            <tr><td>定子外径</td><td>D<sub>out</sub></td><td><input type="number" id="D_out" value="100" oninput="app.calculate()"></td><td>mm</td><td>User Input</td><td>PCB线圈区外边缘直径</td></tr>
                            <tr><td>定子内径</td><td>D<sub>in</sub></td><td><input type="number" id="D_in" value="40" oninput="app.calculate()"></td><td>mm</td><td>User Input</td><td>PCB线圈区内孔直径</td></tr>
                            <tr><td>机械气隙</td><td>g</td><td><input type="number" id="g_mech" value="0.5" step="0.1" oninput="app.calculate()"></td><td>mm</td><td>User Input (Single Side)</td><td>PCB表面到转子磁钢表面的距离</td></tr>
                            <tr><td>磁铁厚度</td><td>h<sub>m</sub></td><td><input type="number" id="h_m" value="3.0" step="0.5" oninput="app.calculate()"></td><td>mm</td><td>User Input</td><td>单侧转子上贴的磁钢厚度</td></tr>
                        </tbody>
                    </table>

                    <h3>C. PCB 叠层与绕组 (IPC Stack-up)</h3>
                    <table>
                        <thead>
                            <tr><th class="col-param">参数名称</th><th class="col-sym">符号</th><th class="col-val">输入值</th><th class="col-unit">单位</th><th class="col-form">计算公式 / 说明</th><th class="col-def">公式变量物理含义</th></tr>
                        </thead>
                        <tbody>
                            <tr><td>PCB层数</td><td>N<sub>lyr</sub></td><td><input type="number" id="layers" value="8" step="2" oninput="app.calculate()"></td><td>-</td><td>User Input</td><td>必须为偶数 (4, 6, 8...)</td></tr>
                            
                            <tr><td>基底铜厚</td><td>t<sub>oz</sub></td><td><input type="number" id="oz" value="3" oninput="app.calculate()"></td><td>oz</td><td>User Input</td><td>内层物理铜厚 (1oz≈35um)</td></tr>
                            
                            <tr><td>外层电镀</td><td>t<sub>plate</sub></td><td><input type="number" id="t_plate" value="25" step="5" oninput="app.calculate()"></td><td>μm</td><td>Process Value</td><td>外层孔金属化增加的厚度</td></tr>

                            <tr><td>芯板厚度</td><td>t<sub>core</sub></td><td><input type="number" id="t_core" value="0.15" step="0.01" oninput="app.calculate()"></td><td>mm</td><td>Material (Core)</td><td>FR4 覆铜板绝缘层厚度</td></tr>

                            <tr><td>PP片厚度</td><td>t<sub>pp</sub></td><td><input type="number" id="t_pp" value="0.10" step="0.01" oninput="app.calculate()"></td><td>mm</td><td>Material (Prepreg)</td><td>层间粘结片压合后厚度</td></tr>
                            
                            <tr><td>阻焊厚度</td><td>t<sub>mask</sub></td><td><input type="number" id="t_mask" value="0.02" step="0.005" oninput="app.calculate()"></td><td>mm</td><td>Solder Mask</td><td>单面绿油/黑油厚度</td></tr>

                            <tr><td>每层每相匝数</td><td>N<sub>t/l</sub></td><td><input type="number" id="turns_layer" value="5" oninput="app.calculate()"></td><td>-</td><td>User Input</td><td>单层内一相绕组的圈数</td></tr>
                            <tr><td>线宽</td><td>w<sub>tr</sub></td><td><input type="number" id="w_trace" value="0.6" step="0.05" oninput="app.calculate()"></td><td>mm</td><td>User Input</td><td>线圈铜导线的宽度</td></tr>
                            <tr><td>端部长度系数</td><td>k<sub>end</sub></td><td><input type="number" id="k_end" value="1.2" step="0.1" oninput="app.calculate()"></td><td>-</td><td>User Input</td><td>端部绕组延伸比例</td></tr>
                        </tbody>
                    </table>

                    <h3>D. 材料属性 (Materials)</h3>
                    <table>
                        <thead>
                            <tr><th class="col-param">参数名称</th><th class="col-sym">符号</th><th class="col-val">输入/选择</th><th class="col-unit">单位</th><th class="col-form">计算公式 / 说明</th><th class="col-def">公式变量物理含义</th></tr>
                        </thead>
                        <tbody>
                            <tr>
                                <td>磁钢牌号</td><td>Grade</td>
                                <td>
                                    <select id="mag_grade" onchange="app.ui.updateMagGrade()">
                                        <option value="ATMAX50SH" selected>ATMAX50SH (Br=1.42T)</option>
                                        <option value="N35">N35 (Br=1.17T)</option>
                                        <option value="N52">N52 (Br=1.45T)</option>
                                        <option value="custom">-- 自定义 --</option>
                                    </select>
                                </td>
                                <td>-</td><td>Database Selection</td><td>选择牌号自动填入Br</td>
                            </tr>
                            <tr><td>剩磁</td><td>B<sub>r</sub></td><td><input type="number" id="Br" value="1.425" step="0.01" oninput="app.calculate()"></td><td>T</td><td>From Material Property</td><td>磁铁材料的剩余磁感应强度</td></tr>
                            <tr><td>相对磁导率</td><td>μ<sub>r</sub></td><td><input type="number" id="mu_r" value="1.05" step="0.01" oninput="app.calculate()"></td><td>-</td><td>Material Constant</td><td>磁铁相对于真空的导磁率</td></tr>
                            <tr><td>极弧系数</td><td>α<sub>p</sub></td><td><input type="number" id="alpha_p" value="0.75" step="0.05" oninput="app.calculate()"></td><td>-</td><td>Design Factor</td><td>磁钢宽度占极距的比例(0~1)</td></tr>
                            <tr><td>磁钢电导率</td><td>σ<sub>mag</sub></td><td><input type="number" id="sigma_mag" value="625000" step="1000" oninput="app.calculate()"></td><td>S/m</td><td>Material Property</td><td>钕铁硼电导率(典型0.6~0.8×10⁶ S/m)</td></tr>
                            <tr><td>铜电阻率</td><td>ρ<sub>cu</sub></td><td><input type="number" id="rho_cu" value="0.0178" step="0.0001" oninput="app.calculate()"></td><td>Ω·mm²/m</td><td>Physical Constant</td><td>20℃下铜的电阻率</td></tr>
                            <tr><td>铜温漂系数</td><td>α<sub>cu</sub></td><td><input type="number" id="alpha_cu" value="0.00393" step="0.00001" oninput="app.calculate()"></td><td>1/K</td><td>Physical Constant</td><td>电阻随温度变化的线性系数</td></tr>
                            <tr><td>磁体密度</td><td>ρ<sub>mag</sub></td><td><input type="number" id="rho_mag" value="7.5" step="0.1" oninput="app.calculate()"></td><td>g/cm³</td><td>Material Property</td><td>用于计算磁钢重量及成本</td></tr>
                            <tr><td>PCB板材Tg</td><td>T<sub>g</sub></td><td><input type="number" id="Tg" value="130" oninput="app.calculate()"></td><td>°C</td><td>Material Limit</td><td>玻璃化转变温度 (FR4通常130-170)</td></tr>
                            <tr><td>空气密度</td><td>ρ<sub>air</sub></td><td><input type="number" id="rho_air" value="1.225" step="0.001" oninput="app.calculate()"></td><td>kg/m³</td><td>Standard Atmosphere</td><td>20℃标准大气密度</td></tr>
                            <tr><td>摩擦系数</td><td>C<sub>f</sub></td><td><input type="number" id="cf_fric" value="0.01" step="0.001" oninput="app.calculate()"></td><td>-</td><td>Empirical Value</td><td>转盘风阻/轴承摩擦综合系数(0.005~0.03)</td></tr>
                        </tbody>
                    </table>

                    <h3>E. 修正系数 (Correction Factors)</h3>
                    <table>
                        <thead>
                            <tr><th class="col-param">参数名称</th><th class="col-sym">符号</th><th class="col-val">输入值</th><th class="col-unit">单位</th><th class="col-form">逻辑说明</th><th class="col-def">物理含义</th></tr>
                        </thead>
                        <tbody>
                            <tr>
                                <td>漏磁系数</td><td>k<sub>leak</sub></td>
                                <td><input type="number" id="k_leak" value="0.95" step="0.01" oninput="app.calculate()"></td>
                                <td>-</td>
                                <td>经验值 (0.9~0.98)</td>
                                <td>考虑极间漏磁导致的磁通损失</td>
                            </tr>
                            <tr>
                                <td>绕组系数</td><td>k<sub>w</sub></td>
                                <td><input type="number" id="k_w" value="0.95" step="0.01" oninput="app.calculate()"></td>
                                <td>-</td>
                                <td>k<sub>w</sub> = k<sub>p</sub> × k<sub>d</sub></td>
                                <td>基波绕组系数 (分布效应与短距效应)</td>
                            </tr>
                            <tr>
                                <td>功率因数</td><td>PF</td>
                                <td><input type="number" id="PF" value="0.95" step="0.01" oninput="app.calculate()" min="0.8" max="1.0"></td>
                                <td>-</td>
                                <td>PCB轴向电机典型值 (0.92-0.98)</td>
                                <td>电压与电流相位差的余弦值</td>
                            </tr>
                        </tbody>
                    </table>
                </div>
            </section>

            <section id="stator" class="page-section">
                <div class="section-card">
                    <h2>2. 定子与电阻计算 (Stator)</h2>
                    <table>
                        <thead>
                            <tr><th class="col-param">参数名称</th><th class="col-sym">符号</th><th class="col-val">计算结果</th><th class="col-unit">单位</th><th class="col-form">计算公式 </th><th class="col-def">公式变量物理含义</th></tr>
                        </thead>
                        <tbody>
                            <tr><td>PCB总厚度</td><td>h<sub>s</sub></td><td><span class="res-val" id="res_hs">0</span></td><td>mm</td><td>h<sub>s</sub> = H<sub>mask</sub> + H<sub>cu</sub> + H<sub>dielectric</sub></td><td>IPC 叠层计算值(含Core/PP/铜/阻焊)</td></tr>
                            <tr><td>平均半径</td><td>R<sub>avg</sub></td><td><span class="res-val" id="res_Ravg">0</span></td><td>mm</td><td>R<sub>avg</sub> = (D<sub>out</sub> + D<sub>in</sub>) / 4</td><td><span>D<sub>out</sub></span>:定子外径, <span>D<sub>in</sub></span>:定子内径</td></tr>
                            <tr><td>每相总匝数</td><td>N<sub>ph</sub></td><td><span class="res-val" id="res_Nph">0</span></td><td>-</td><td>N<sub>ph</sub> = N<sub>lyr</sub> × N<sub>t/l</sub></td><td><span>N<sub>lyr</sub></span>:层数, <span>N<sub>t/l</sub></span>:每层每相匝数</td></tr>
                            <tr><td>绕组总长度</td><td>L<sub>tot</sub></td><td><span class="res-val" id="res_Ltot">0</span></td><td>m</td><td>L<sub>tot</sub> = N<sub>ph</sub> × (2L<sub>cond</sub> + 2k<sub>end</sub>τ<sub>p</sub>)</td><td><span>N<sub>ph</sub></span>:总匝数, <span>k<sub>end</sub></span>:端部系数</td></tr>
                            <tr><td>相电阻(20℃)</td><td>R<sub>20</sub></td><td><span class="res-val" id="res_R20">0</span></td><td>Ω</td><td>R<sub>20</sub> = Σ (R<sub>inner</sub> + R<sub>outer</sub>)</td><td>考虑内外层铜厚差异 (外层含电镀)</td></tr>
                            <tr><td>相电阻(热)</td><td>R<sub>ph</sub></td><td><span class="res-val" id="res_Rhot">0</span></td><td>Ω</td><td>R<sub>ph</sub> = R<sub>20</sub> × [1 + α(T-20)]</td><td><span>R<sub>20</sub></span>:冷态电阻, <span>α</span>:铜温漂系数, <span>T</span>:温度</td></tr>
                        </tbody>
                    </table>
                </div>
            </section>

            <section id="mag" class="page-section">
                <div class="section-card">
                    <h2>3. 磁路分析 (Flux Linkage Method)</h2>
                    <p style="color:#64748b; font-size:14px; margin-bottom:15px; border-left:4px solid #f59e0b; padding-left:10px;">
                        <b>无铁芯修正 (Coreless Correction)：</b> 采用磁通链法计算。磁通量 $\Phi$ 基于有效扇区面积积分计算，而非简单的导线切割长度。
                    </p>
                    <table>
                        <thead>
                            <tr><th class="col-param">参数名称</th><th class="col-sym">符号</th><th class="col-val">计算结果</th><th class="col-unit">单位</th><th class="col-form">计算公式 </th><th class="col-def">公式变量物理含义</th></tr>
                        </thead>
                        <tbody>
                            <tr><td>有效气隙</td><td>g<sub>eff</sub></td><td><span class="res-val" id="res_geff">0</span></td><td>mm</td><td>g<sub>eff</sub> = h<sub>s</sub> + 2g</td><td><span>h<sub>s</sub></span>:定子PCB厚度, <span>g</span>:单侧机械气隙</td></tr>
                            <tr><td>磁路负载点</td><td>PC</td><td><span class="res-val" id="res_PC">0</span></td>
                            <td>-</td>
                            <td>PC = 2h<sub>m</sub> / (g<sub>eff</sub> × μ<sub>r</sub>)</td>
                            <td><span>h<sub>m</sub></span>:单块磁铁厚, <span>g<sub>eff</sub></span>:总气隙, <span>μ<sub>r</sub></span>:回复磁导率</td>
                        </tr>
                        <tr>
                            <td>气隙磁密(平台)</td>
                            <td>B<sub>g</sub></td>
                            <td><span class="res-val" id="res_Bg">0</span></td>
                            <td>T</td>
                            <td>B<sub>g</sub> = [2h<sub>m</sub>/(2h<sub>m</sub>+g<sub>eff</sub>)] × B<sub>r</sub></td>
                            <td>无铁芯结构的有效气隙磁感应强度</td>
                        </tr>
                        <tr>
                            <td>有效极面积</td>
                            <td>A<sub>pole</sub></td>
                            <td><span class="res-val" id="res_Apole">0</span></td>
                            <td>mm²</td>
                            <td>A = π(R<sub>o</sub>²-R<sub>i</sub>²)/2p × α<sub>p</sub></td>
                            <td>单个磁极覆盖的扇形有效面积</td>
                        </tr>
                        <tr>
                            <td>每极磁通</td>
                            <td>Φ</td>
                            <td><span class="res-val" id="res_Phi">0</span></td>
                            <td>Wb</td>
                            <td>Φ = B<sub>g</sub> × A<sub>pole</sub> × k<sub>leak</sub></td>
                            <td>穿过定子绕组的有效磁通总量</td>
                        </tr>
                    </table>
                </div>
            </section>

            <section id="perf" class="page-section">
                <div class="section-card">
                    <h2>4. 性能指标 (Performance)</h2>
                    <table>
                        <thead>
                            <tr>
                                <th class="col-param">参数名称</th>
                                <th class="col-sym">符号</th>
                                <th class="col-val">计算结果</th>
                                <th class="col-unit">单位</th>
                                <th class="col-form">计算公式</th>
                                <th class="col-def">公式变量物理含义</th>
                            </tr>
                        </thead>
                        <tbody>
                             <tr>
                                <td>感应电动势</td>
                                <td>E<sub>rms</sub></td>
                                <td><span class="res-val" id="res_Erms">0</span></td>
                                <td>V</td>
                                <td>E = √2·π · f · N<sub>ph</sub> · Φ · k<sub>w</sub></td>
                                <td><span>f</span>:电频率, <span>N<sub>ph</sub></span>:相匝数, <span>k<sub>w</sub></span>:绕组系数</td>
                            </tr>
                            <tr>
                                <td>反电势常数</td>
                                <td>K<sub>e</sub></td>
                                <td><span class="res-val" id="res_Ke">0</span></td>
                                <td>V·s/rad</td>
                                <td>K<sub>e</sub> = E<sub>rms</sub> / ω</td>
                                <td><span>E<sub>rms</sub></span>:相电势, <span>ω</span>:机械角速度</td>
                            </tr>
                            <tr>
                                <td>Kv 值</td>
                                <td>K<sub>v</sub></td>
                                <td><span class="res-val" id="res_Kv">0</span></td>
                                <td>rpm/V</td>
                                <td>K<sub>v</sub> ≈ 9.55 / K<sub>e</sub></td>
                                <td><span>K<sub>e</sub></span>:反电势常数, 9.55:单位换算常数</td>
                            </tr>
                            <tr>
                                <td>额定力矩</td>
                                <td>T<sub>nom</sub></td>
                                <td><span class="res-val" id="res_Tnom">0</span></td>
                                <td>Nm</td>
                                <td>T<sub>nom</sub> = P<sub>nom</sub> / ω</td>
                                <td><span>P<sub>nom</sub></span>:额定功率, <span>ω</span>:机械角速度(rad/s)</td>
                            </tr>
                            <tr>
                                <td>电磁转矩常数</td>
                                <td>K<sub>t</sub></td>
                                <td><span class="res-val" id="res_Kt">0</span></td>
                                <td>Nm/A</td>
                                <td>K<sub>t</sub> = 3 · p · Ψ / √2</td>
                                <td><span>p</span>:极对数, <span>Ψ</span>:磁链</td>
                            </tr>
                            <tr>
                                <td>输入电功率</td>
                                <td>P<sub>in</sub></td>
                                <td><span class="res-val" id="res_Pin">0</span></td>
                                <td>W</td>
                                <td>P<sub>in</sub> = P<sub>nom</sub> / η</td>
                                <td><span>P<sub>nom</sub></span>:输出功率, <span>η</span>:电机效率</td>
                            </tr>
                            <tr>
                                <td>相电流(RMS)</td>
                                <td>I<sub>rms</sub></td>
                                <td><span class="res-val" id="res_Irms">0</span></td>
                                <td>A</td>
                                <td>I<sub>rms</sub> = P<sub>in</sub> / (3 · E<sub>rms</sub> · PF)</td>
                                <td>基于能量守恒，考虑效率和功率因数</td>
                            </tr>
                            <tr>
                                <td>电流密度</td>
                                <td>J</td>
                                <td><span class="res-val" id="res_J">0</span></td>
                                <td>A/mm²</td>
                                <td>J = I<sub>rms</sub> / A<sub>cu</sub></td>
                                <td><span>I<sub>rms</sub></span>:相电流RMS, <span>A<sub>cu</sub></span>:铜线截面积</td>
                            </tr>
                            <tr>
                                <td>功率因数</td>
                                <td>PF</td>
                                <td><span class="res-val" id="res_PF">0</span></td>
                                <td>-</td>
                                <td>用户输入值，PCB轴向电机典型0.92-0.98</td>
                                <td>电压与电流相位差的余弦值</td>
                            </tr>
                            <tr>
                                <td>电机效率</td>
                                <td>η</td>
                                <td><span class="res-val" id="res_Eff_perf">0</span></td>
                                <td>%</td>
                                <td>η = P<sub>nom</sub> / P<sub>in</sub> × 100%</td>
                                <td>输出机械功率与输入电功率之比</td>
                            </tr>
                        </tbody>
                    </table>
                </div>
            </section>

            <section id="loss" class="page-section">
                <div class="section-card">
                    <h2>5. 损耗分析 (High-Fidelity Loss Analysis)</h2>
                    <p style="color:#64748b; font-size:14px; margin-bottom:20px;">
                        包含集肤/邻近效应产生的交流铜损(AC Loss)、磁钢涡流损耗(谐波感应)以及工程杂散损耗(Stray Loss)。
                    </p>
                    <table>
                        <thead>
                            <tr>
                                <th class="col-param">参数名称</th>
                                <th class="col-sym">符号</th>
                                <th class="col-val">计算结果</th>
                                <th class="col-unit">单位</th>
                                <th class="col-form">计算公式 / 说明</th>
                                <th class="col-def">公式变量物理含义</th>
                            </tr>
                        </thead>
                        <tbody>
                            <tr>
                                <td>PCB 直流铜损</td>
                                <td>P<sub>cu,dc</sub></td>
                                <td><span class="res-val" id="res_Pcu_dc">0</span></td>
                                <td>W</td>
                                <td>P<sub>cu,dc</sub> = 3 × I<sub>rms</sub>² × R<sub>ph</sub></td>
                                <td><span>I<sub>rms</sub></span>:相电流, <span>R<sub>ph</sub></span>:热态相电阻</td>
                            </tr>
                            <tr>
                                <td>PCB 交流铜损</td>
                                <td>P<sub>cu,ac</sub></td>
                                <td><span class="res-val" id="res_Pcu_ac">0</span></td>
                                <td>W</td>
                                <td>P<sub>cu,ac</sub> = P<sub>cu,dc</sub> × (k<sub>ac</sub> - 1)</td>
                                <td><span>k<sub>ac</sub></span>:交流电阻系数(与频率 f² 相关)</td>
                            </tr>
                            <tr>
                                <td>PCB 涡流损耗</td>
                                <td>P<sub>eddy</sub></td>
                                <td><span class="res-val" id="res_Peddy">0</span></td>
                                <td>W</td>
                                <td>P = (π²·f²·B²·w²·Vol) / (12·ρ)</td>
                                <td><span>w</span>:线宽, <span>Vol</span>:铜体积, <span>ρ</span>:电阻率</td>
                            </tr>
                            <tr>
                                <td>磁钢涡流损耗</td>
                                <td>P<sub>mag</sub></td>
                                <td><span class="res-val" id="res_Pmag_eddy">0</span></td>
                                <td>W</td>
                                <td>P = (π²·f²·B²·t²·σ·Vol) / 6</td>
                                <td><span>t</span>:磁钢厚, <span>σ</span>:电导率, <span>Vol</span>:磁钢体积</td>
                            </tr>
                            <tr>
                                <td>机械损耗</td>
                                <td>P<sub>mech</sub></td>
                                <td><span class="res-val" id="res_Pmech">0</span></td>
                                <td>W</td>
                                <td>P = 0.5·C<sub>f</sub>·ρ·ω³·(R<sub>o</sub>⁵-R<sub>i</sub>⁵)</td>
                                <td><span>C<sub>f</sub></span>:摩擦系数, <span>ρ</span>:空气密度, <span>ω</span>:角速度</td>
                            </tr>
                            <tr>
                                <td>杂散损耗</td>
                                <td>P<sub>stray</sub></td>
                                <td><span class="res-val" id="res_Pstray">0</span></td>
                                <td>W</td>
                                <td>P<sub>stray</sub> ≈ 0.008 × P<sub>nom</sub></td>
                                <td><span>P<sub>nom</sub></span>:额定功率 (工程经验值)，包含结构件涡流、PCB介质损耗、轴承密封圈/润滑脂的额外阻力</td>
                            </tr>
                            <tr style="background-color:#fef2f2;">
                                <td style="font-weight:800">总损耗</td>
                                <td>P<sub>loss</sub></td>
                                <td><span class="res-val res-bad" id="res_Ploss">0</span></td>
                                <td>W</td>
                                <td>P<sub>loss</sub> = Σ (P<sub>cu</sub> + P<sub>mag</sub> + P<sub>mech</sub>...)</td>
                                <td>所有损耗分量之和</td>
                            </tr>
                            <tr>
                                <td>总效率</td>
                                <td>η</td>
                                <td><span class="res-val" id="res_Eff">0</span></td>
                                <td>%</td>
                                <td>η = P<sub>nom</sub> / (P<sub>nom</sub> + P<sub>loss</sub>)</td>
                                <td><span>P<sub>nom</sub></span>:输出功率, <span>P<sub>loss</sub></span>:总损耗</td>
                            </tr>
                        </tbody>
                    </table>
                </div>
            </section>

            <section id="therm" class="page-section">
                <div class="section-card">
                    <h2>6. 热分析 (Thermal Analysis)</h2>
                    
                    <h3>A. 边界条件</h3>
                    <table>
                        <thead>
                            <tr>
                                <th class="col-param">参数</th>
                                <th class="col-sym">符号</th>
                                <th class="col-val">输入/结果</th>
                                <th class="col-unit">单位</th>
                                <th class="col-form">说明</th>
                                <th class="col-def">物理含义</th>
                            </tr>
                        </thead>
                        <tbody>
                            <tr>
                                <td>换热系数</td>
                                <td>h</td>
                                <td><input type="number" id="h_conv" value="50" oninput="app.calculate()"></td>
                                <td>W/m²K</td>
                                <td>User Input</td>
                                <td>表面对流散热系数(自然:10, 强迫:50+)</td>
                            </tr>
                            <tr>
                                <td>环境温度</td>
                                <td>T<sub>amb</sub></td>
                                <td><input type="number" id="T_amb" value="25" oninput="app.calculate()"></td>
                                <td>°C</td>
                                <td>User Input</td>
                                <td>电机所处的环境空气温度</td>
                            </tr>
                        </tbody>
                    </table>

                    <h3>B. 稳态温升</h3>
                    <table>
                        <thead>
                            <tr>
                                <th class="col-param">参数</th>
                                <th class="col-sym">符号</th>
                                <th class="col-val">结果</th>
                                <th class="col-unit">单位</th>
                                <th class="col-form">计算公式</th>
                                <th class="col-def">公式变量物理含义</th>
                            </tr>
                        </thead>
                        <tbody>
                            <tr>
                                <td>定子表面积</td>
                                <td>A<sub>surf</sub></td>
                                <td><span class="res-val" id="res_Asurf">0</span></td>
                                <td>m²</td>
                                <td>A<sub>surf</sub> = 2 × π × (R<sub>out</sub>² - R<sub>in</sub>²)</td>
                                <td><span>R<sub>out/in</sub></span>: 定子有效区域外/内半径</td>
                            </tr>
                            <tr>
                                <td>温升</td>
                                <td>ΔT</td>
                                <td><span class="res-val" id="res_dT">0</span></td>
                                <td>K</td>
                                <td>ΔT = P<sub>loss</sub> / (h × A<sub>surf</sub>)</td>
                                <td><span>P<sub>loss</sub></span>:总热损耗, <span>h</span>:换热系数, <span>A</span>:面积</td>
                            </tr>
                            <tr>
                                <td>最终温度</td>
                                <td>T<sub>coil</sub></td>
                                <td><span class="res-val" id="res_Tfinal">0</span></td>
                                <td>°C</td>
                                <td>T<sub>coil</sub> = T<sub>amb</sub> + ΔT</td>
                                <td><span>T<sub>amb</sub></span>:环境温度, <span>ΔT</span>:计算温升</td>
                            </tr>
                        </tbody>
                    </table>
                </div>
            </section>

            <section id="cost" class="page-section">
                <div class="section-card">
                    <h2>7. 成本明细 (Cost Estimation)</h2>
                    <table class="cost-table">
                        <thead>
                            <tr>
                                <th style="width:25%;font-weight: 600; font-size: 16px; color: #334155;">组件名称</th>
                                <th style="width:20%;font-weight: 600; font-size: 16px; color: #334155;">单价输入 (¥)</th>
                                <th style="width:25%;font-weight: 600; font-size: 16px; color: #334155;">用量计算 / 备注</th>
                                <th style="width:10%;font-weight: 600; font-size: 16px; color: #334155;">单位</th>
                                <th style="width:20%;font-weight: 600; font-size: 16px; color: #334155;">小计 (¥)</th>
                            </tr>
                        </thead>
                        <tbody>
                            <tr class="cost-row">
                                <td><b>钕铁硼磁铁</b></td>
                                <td><input type="number" class="cost-input" id="price_mag" value="400" oninput="app.calculate()"></td>
                                <td>用量: <span id="res_Mmag" style="font-weight:bold;">0</span> kg</td>
                                <td>元/kg</td>
                                <td><span class="res-val" id="sub_mag">0</span></td>
                            </tr>
                            <tr class="cost-row">
                                <td><b>PCB定子</b></td>
                                <td><input type="number" class="cost-input" id="price_pcb_unit" value="60" oninput="app.calculate()"></td>
                                <td>按片计价</td>
                                <td>元/pcs</td>
                                <td><span class="res-val" id="sub_pcb">0</span></td>
                            </tr>
                            <tr class="cost-row">
                                <td><b>轴承</b></td>
                                <td><input type="number" class="cost-input" id="price_bearing" value="8" oninput="app.calculate()"></td>
                                <td>用量:2</td>
                                <td>元/个</td>
                                <td><span class="res-val" id="sub_bearing">0</span></td>
                            </tr>
                            <tr class="cost-row">
                                <td><b>机加件(轴/壳)</b></td>
                                <td><input type="number" class="cost-input" id="price_mech" value="50" oninput="app.calculate()"></td>
                                <td>CNC/压铸/3D打印</td>
                                <td>元/套</td>
                                <td><span class="res-val" id="sub_mech">0</span></td>
                            </tr>
                            <tr class="cost-row">
                                <td><b>辅材/人工</b></td>
                                <td><input type="number" class="cost-input" id="price_labor" value="25" oninput="app.calculate()"></td>
                                <td>组装费</td>
                                <td>元/台</td>
                                <td><span class="res-val" id="sub_labor">0</span></td>
                            </tr>
                            <tr class="cost-total">
                                <td colspan="4" style="text-align:right; padding-right:20px;">整机 BOM 预估总成本:</td>
                                <td><span class="res-val" id="res_CostTotal">0</span> ¥</td>
                            </tr>
                        </tbody>
                    </table>
                </div>
            </section>

            <section id="ipc" class="page-section">
                <div class="section-card">
                    <h2>8. 载流校验与安全 (IPC-2152 Validation)</h2>
                    <p style="color:#64748b; font-size:14px; margin-bottom:20px;">基于 IPC-2221/IPC-2152 标准，针对内层导体(最恶劣散热条件)计算载流能力。</p>
                    
                    <table>
                        <thead>
                            <tr>
                                <th class="col-param">校验项目</th>
                                <th class="col-sym">符号</th>
                                <th class="col-val">结果/状态</th>
                                <th class="col-unit">单位</th>
                                <th class="col-form">阈值与逻辑</th>
                                <th class="col-def">说明</th>
                            </tr>
                        </thead>
                        <tbody>
                            <tr>
                                <td>IPC最大载流(10℃温升)</td>
                                <td>I<sub>IPC10</sub></td>
                                <td><span class="res-val" id="res_Iipc10">0</span></td>
                                <td>A</td>
                                <td>I = k · ΔT<sup>0.44</sup> · A<sup>0.725</sup></td>
                                <td>保守运行条件下的最大电流 (k=0.024)</td>
                            </tr>
                            <tr>
                                <td>IPC最大载流(40℃温升)</td>
                                <td>I<sub>IPC40</sub></td>
                                <td><span class="res-val" id="res_Iipc40">0</span></td>
                                <td>A</td>
                                <td>I = k · ΔT<sup>0.44</sup> · A<sup>0.725</sup></td>
                                <td>常规设计温升上限对应的电流</td>
                            </tr>
                            <tr>
                                <td>当前相电流</td>
                                <td>I<sub>rms</sub></td>
                                <td><span class="res-val" id="res_CheckIrms">0</span></td>
                                <td>A</td>
                                <td>Ref from Performance</td>
                                <td>实际工作电流</td>
                            </tr>
                            <tr>
                                <td><b>电流安全裕度</b></td>
                                <td>Margin</td>
                                <td><span id="res_IPCMargin">--</span></td>
                                <td>-</td>
                                <td>Compare I<sub>rms</sub> vs I<sub>IPC40</sub></td>
                                <td>PASS: I<sub>rms</sub> < I<sub>IPC40</sub></td>
                            </tr>
                            <tr>
                                <td><b>Tg 热失效风险</b></td>
                                <td>Risk</td>
                                <td><span id="res_TgRisk">--</span></td>
                                <td>-</td>
                                <td>T<sub>final</sub> vs (T<sub>g</sub> - 20)</td>
                                <td>确保线圈温度低于材料Tg点至少20度</td>
                            </tr>
                        </tbody>
                    </table>
                </div>
            </section>

        </main>
    </div>

<script>
/**
     * @namespace App
     * @description Core namespace for the Motor Design Application.
     */
    const App = (() => {

        const Config = {
            storageKey: 'drss_v10_design_data',
            magnets: {
                "ATMAX50SH": 1.425,
                "N35": 1.17,
                "N52": 1.45
            },
            physics: {
                k_ipc: 0.024,
                eddy_correction: 1.2,
                mu0: 4 * Math.PI * 1e-7,  // 真空磁导率 H/m
                k_ind_geom: 0.45          // PCB绕组几何形状修正系数 (扁平线圈非理想螺线管)
            }
        };

        class PhysicsEngine {
            
            static calcGeometry(inputs) {
                // 1. 基础参数准备
                const t_base_mm = inputs.oz * 0.035; // 1oz = 0.035mm
                const t_plate_mm = inputs.t_plate_um / 1000;
                
                // 2. 复杂叠层厚度计算 (Stack-up Calculation Logic)
                let h_s = 0;
                let h_copper_total = 0; 
                let h_mask_total = 2 * inputs.t_mask;

                // Resistance Calculation Variables
                const R_out = inputs.D_out / 2;
                const R_in = inputs.D_in / 2;
                const R_avg = (R_out + R_in) / 2;
                const tau_p = (Math.PI * 2 * R_avg / 1000) / (2 * inputs.p);
                const L_cond = (R_out - R_in) / 1000;
                
                // 假设所有层串联
                const N_ph = inputs.layers * inputs.turns;
                const L_turn = 2 * L_cond + 2 * (tau_p * inputs.k_end);
                const L_total = N_ph * L_turn;
                
                // 单层绕组长度
                const L_per_layer_total = inputs.turns * L_turn; 

                // 电阻计算截面积
                // 外层：基铜 + 电镀
                const A_outer = inputs.w_tr * (t_base_mm + t_plate_mm);
                // 内层：仅基铜
                const A_inner = inputs.w_tr * t_base_mm;

                let R_20 = 0;

                if (inputs.layers <= 2) {
                    // 双面板结构 (Mask - OutCu - Core - OutCu - Mask)
                    const h_cu_outer = 2 * (t_base_mm + t_plate_mm);
                    h_s = h_mask_total + h_cu_outer + inputs.t_core;
                    h_copper_total = h_cu_outer; 
                    
                    // 电阻计算 (全按外层算)
                    R_20 = (inputs.rho_cu * L_total) / A_outer;
                } else {
                    // 多层板结构 (N >= 4)
                    // 结构：[Mask-OuterCu-PP] - [Core-InnerCu]... - [PP-OuterCu-Mask]
                    
                    const h_cu_outer = 2 * (t_base_mm + t_plate_mm);
                    const h_cu_inner = (inputs.layers - 2) * t_base_mm;
                    
                    // 绝缘介质层: Core数 = N/2 - 1, PP数 = N/2
                    const num_cores = (inputs.layers / 2) - 1;
                    const num_pp = inputs.layers / 2;
                    const h_dielectric = (num_cores * inputs.t_core) + (num_pp * inputs.t_pp);
                    
                    // 总厚度
                    h_s = h_mask_total + h_cu_outer + h_cu_inner + h_dielectric;
                    
                    h_copper_total = h_cu_outer + h_cu_inner;

                    // 精确电阻计算：分别计算外层和内层电阻然后叠加
                    const R_outer_layer = (inputs.rho_cu * L_per_layer_total) / A_outer;
                    const R_inner_layer = (inputs.rho_cu * L_per_layer_total) / A_inner;
                    
                    // 2层外层 + (N-2)层内层
                    R_20 = (2 * R_outer_layer) + ((inputs.layers - 2) * R_inner_layer);
                }
                
                // 用于 IPC 计算的单层截面积 (取最恶劣情况：内层)
                const A_cu_worst = inputs.w_tr * t_base_mm; 

                return { 
                    t_base_mm, t_plate_mm, h_s, 
                    R_out, R_in, R_avg, tau_p, L_cond, N_ph, L_turn, L_total, 
                    A_cu: A_cu_worst, // 导出给 IPC 模块使用
                    R_20 
                };
            }

            static calcMagnetic(inputs, geom) {
                // --- 核心定义：有效气隙 (Effective Gap) ---
                // 在DRSS结构中，磁通穿过两个机械气隙和定子厚度
                const g_eff = geom.h_s + 2 * inputs.g;
                
                const h_mag_tot = 2 * inputs.h_m; 
                const PC = h_mag_tot / (g_eff * inputs.mu_r);
                
                // Airgap Flux Density
                const B_g = (h_mag_tot / (h_mag_tot + g_eff)) * inputs.Br;

                const R_out_m = geom.R_out / 1000;
                const R_in_m = geom.R_in / 1000;
                
                // Flux Linkage Area
                const A_annulus = Math.PI * (Math.pow(R_out_m, 2) - Math.pow(R_in_m, 2));
                const A_pole = (A_annulus / (2 * inputs.p)) * inputs.alpha_p; 
                const A_pole_mm2 = A_pole * 1e6; 

                // Flux per pole
                const Phi = B_g * A_pole * inputs.k_leak;
                
                return { g_eff, h_mag_tot, PC, B_g, A_pole, A_pole_mm2, Phi, A_annulus };
            }

            static calcPerformance(inputs, geom, mag) {
                const omega = inputs.n_nom * 2 * Math.PI / 60;
                const f_elec = inputs.n_nom * inputs.p / 60;
                
                // 1. Back-EMF (Standard RMS Calculation)
                // Correct Physics: E_rms = (2*PI/sqrt(2)) * f * N * Phi * kw
                // sqrt(2)*PI approx 4.44
                const E_rms = (Math.SQRT2 * Math.PI) * f_elec * geom.N_ph * mag.Phi * inputs.k_w;

                const Ke = E_rms / omega; 
                const Kv = 9.55 / Ke; 

                const T_nom = inputs.P_nom / omega;
                
                // 2. 电磁转矩常数 Kt = 3 * p * Ψ / √2，其中 Ψ = N_ph * Φ * k_w / √2
                const Psi = geom.N_ph * mag.Phi * inputs.k_w / Math.SQRT2;
                const Kt = 3 * inputs.p * Psi / Math.SQRT2;
                
                // 3. 耦合迭代计算电流、损耗和效率
                const iterativeResult = this.calcIterativePerformance(inputs, geom, mag, E_rms, T_nom, omega, f_elec);
                
                const I_rms = iterativeResult.I_rms;
                const J = I_rms / geom.A_cu;

                // --- DETAILED INDUCTANCE CALCULATION ---
                
                // 1. Magnetic Path Length for Inductance (一致性修正)
                // 直接引用 Section 3 计算的 mag.g_eff
                const g_total_m = mag.g_eff / 1000;

                // 2. Phase Area (Approx 1/3 of annulus)
                const A_phase_m2 = mag.A_annulus / 3;
                const A_phase_mm2 = A_phase_m2 * 1e6;

                // 3. Inductance Calculation
                const L_ph_H = (Config.physics.k_ind_geom * Config.physics.mu0 * Math.pow(geom.N_ph, 2) * A_phase_m2) / g_total_m;
                const L_ph_uH = L_ph_H * 1e6; 

                // Electrical Time Constant
                const Tau_e_s = L_ph_H / geom.R_20;
                const Tau_e_us = Tau_e_s * 1e6;

                return { 
                    omega, f_elec, E_rms, Ke, Kv, T_nom, Kt,
                    I_rms, J, 
                    L_ph_uH, Tau_e_us, 
                    A_phase_mm2,
                    N_ph_sq: Math.pow(geom.N_ph, 2),
                    // 迭代计算结果
                    Pin: iterativeResult.Pin,
                    PF: inputs.PF,
                    eta: iterativeResult.eta * 100
                };
            }

            static calcIterativePerformance(inputs, geom, mag, E_rms, T_nom, omega, f_elec) {
                // 初始假设效率 85%
                let eta_guess = 0.85;
                let iterCount = 0;
                let I_rms, Pin, eta_final;
                
                do {
                    // 输入电功率 = 输出机械功率 / 效率
                    Pin = inputs.P_nom / eta_guess;
                    
                    // 相电流 (考虑功率因数)
                    const PF = inputs.PF; // PCB轴向电机功率因数估计
                    I_rms = Pin / (3 * E_rms * PF);
                    
                    // 计算此电流下的损耗（简化版本，实际应调用完整损耗模型）
                    const T_coil_guess = inputs.T_amb + 40;
                    const R_hot = geom.R_20 * (1 + inputs.alpha_cu * (T_coil_guess - 20));
                    const P_cu = 3 * I_rms * I_rms * R_hot;
                    
                    // 估算其他损耗（简化处理）
                    const w_m = inputs.w_tr / 1000;
                    const Vol_cu_total = (geom.L_total * 3 * inputs.w_tr * geom.t_base_mm) / 1e6;
                    const P_eddy_tr = (Math.pow(Math.PI,2) * Math.pow(f_elec,2) * Math.pow(mag.B_g,2) * Math.pow(w_m,2) * Vol_cu_total * Config.physics.eddy_correction) / (12 * 1.68e-8);
                    
                    // 磁钢涡流损耗
                    const t_mag_m = inputs.h_m / 1000;
                    const Vol_mag = 2 * mag.A_pole * (2 * inputs.p) * t_mag_m; 
                    const k_harm = 0.04;
                    const n_harm = 5;
                    const B_ac = mag.B_g * k_harm;
                    const f_eff = f_elec * n_harm;
                    let P_mag_calc = (Math.pow(Math.PI,2)/6) * Math.pow(f_eff,2) * Math.pow(B_ac,2) * Math.pow(t_mag_m,2) * inputs.sigma_mag * Vol_mag;
                    const P_mag_eddy = Math.max(0, Math.min(P_mag_calc, inputs.P_nom * 0.02));
                    
                    // 机械损耗
                    const R_out_m = geom.R_out / 1000;
                    const R_in_m = geom.R_in / 1000;
                    const P_mech = 0.5 * inputs.cf_fric * inputs.rho_air * Math.pow(omega, 3) * (Math.pow(R_out_m, 5) - Math.pow(R_in_m, 5));
                    
                    const P_stray = inputs.P_nom * 0.008;
                    
                    const P_loss_total = P_cu + P_eddy_tr + P_mag_eddy + P_mech + P_stray;
                    
                    // 计算实际效率
                    eta_final = inputs.P_nom / (inputs.P_nom + P_loss_total);
                    
                    // 更新效率猜测
                    eta_guess = eta_guess * 0.7 + eta_final * 0.3; // 加权更新
                    
                    iterCount++;
                } while (Math.abs(eta_guess - eta_final) > 0.001 && iterCount < 20);
                
                // 最终电流计算使用最终效率
                Pin = inputs.P_nom / eta_final;
                I_rms = Pin / (3 * E_rms * inputs.PF);
                
                return { I_rms, Pin, eta: eta_final };
            }

            static calcLosses(inputs, geom, mag, perf) {
                let T_coil = inputs.T_amb + 40; 
                let R_hot = geom.R_20;
                let P_cu_dc = 0, P_cu_ac = 0, P_eddy_tr = 0, P_mag_eddy = 0;
                let P_mech = 0, P_stray = 0, P_loss = 0;

                for(let iter = 0; iter < 4; iter++) {
                    R_hot = geom.R_20 * (1 + inputs.alpha_cu * (T_coil - 20));
                    P_cu_dc = 3 * Math.pow(perf.I_rms, 2) * R_hot;
                    
                    const k_ac_factor = 1 + Math.pow(perf.f_elec / 1200, 2);
                    P_cu_ac = P_cu_dc * (k_ac_factor - 1);
                    
                    // --- PCB Eddy Current Loss ---
                    const w_m = inputs.w_tr / 1000;
                    const Vol_cu_total = (geom.L_total * 3 * inputs.w_tr * geom.t_base_mm) / 1e6;
                    P_eddy_tr = (Math.pow(Math.PI,2) * Math.pow(perf.f_elec,2) * Math.pow(mag.B_g,2) * Math.pow(w_m,2) * Vol_cu_total * Config.physics.eddy_correction) / (12 * 1.68e-8);
                    
                    // --- Magnet Eddy Current Loss ---
                    const t_mag_m = inputs.h_m / 1000;
                    const Vol_mag = 2 * mag.A_pole * (2 * inputs.p) * t_mag_m; 
                    const k_harm = 0.04;
                    const n_harm = 5;
                    const B_ac = mag.B_g * k_harm;
                    const f_eff = perf.f_elec * n_harm;
                    let P_mag_calc = (Math.pow(Math.PI,2)/6) * Math.pow(f_eff,2) * Math.pow(B_ac,2) * Math.pow(t_mag_m,2) * inputs.sigma_mag * Vol_mag;
                    P_mag_eddy = Math.max(0, Math.min(P_mag_calc, inputs.P_nom * 0.02));
                    
                    // --- Mechanical Loss ---
                    const R_out_m = geom.R_out / 1000;
                    const R_in_m = geom.R_in / 1000;
                    P_mech = 0.5 * inputs.cf_fric * inputs.rho_air * Math.pow(perf.omega, 3) * (Math.pow(R_out_m, 5) - Math.pow(R_in_m, 5));
                    
                    P_stray = inputs.P_nom * 0.008;
                    
                    P_loss = P_cu_dc + P_cu_ac + P_eddy_tr + P_mag_eddy + P_mech + P_stray;
                    
                    const A_surf = 2 * Math.PI * Math.pow(geom.R_out/1000, 2);
                    const dT = P_loss / (inputs.h_conv * A_surf);
                    T_coil = inputs.T_amb + dT;
                }
                
                const Eff = (inputs.P_nom / (inputs.P_nom + P_loss)) * 100;
                return { R_hot, P_cu_dc, P_cu_ac, P_eddy_tr, P_mag_eddy, P_mech, P_stray, P_loss, Eff, T_coil };
            }

            static calcThermal(inputs, losses, geom) {
                const A_surf = 2 * Math.PI * (Math.pow(geom.R_out/1000, 2) - Math.pow(geom.R_in/1000, 2));
                const dT = losses.P_loss / (inputs.h_conv * A_surf);
                const T_final = inputs.T_amb + dT;
                return { A_surf, dT, T_final };
            }

            static calcCost(inputs, geom) {
                const Area_ring_cm2 = Math.PI * (Math.pow(geom.R_out/10,2) - Math.pow(geom.R_in/10,2));
                const Vol_mag_cm3 = (2 * Area_ring_cm2 * inputs.alpha_p * inputs.h_m) / 10;
                const M_mag = (Vol_mag_cm3 * inputs.rho_mag) / 1000;
                const Cost_Mag = M_mag * inputs.price_mag;
                const Cost_PCB = inputs.price_pcb;
                const Cost_Bear = inputs.price_bearing * 2;
                const Cost_Mech = inputs.price_mech;
                const Cost_Labor = inputs.price_labor;
                const Cost_Total = Cost_Mag + Cost_PCB + Cost_Bear + Cost_Mech + Cost_Labor;
                return { M_mag, Cost_Mag, Cost_PCB, Cost_Bear, Cost_Mech, Cost_Labor, Cost_Total };
            }

            static calcIPC(inputs, geom, perf, thermal) {
                const A_mils = geom.A_cu * 1550.0;
                const k = Config.physics.k_ipc;
                const I_ipc10 = k * Math.pow(10, 0.44) * Math.pow(A_mils, 0.725);
                const I_ipc40 = k * Math.pow(40, 0.44) * Math.pow(A_mils, 0.725);
                let ipcStatus = perf.I_rms < I_ipc40 ? "PASS" : "WARNING";
                let ipcClass = perf.I_rms < I_ipc40 ? "status-ok" : "status-warn";
                let tgStatus = (inputs.Tg - thermal.T_final > 20) ? "OK" : "RISK";
                let tgClass = (inputs.Tg - thermal.T_final > 20) ? "status-ok" : "status-warn";
                return { I_ipc10, I_ipc40, ipcStatus, ipcClass, tgStatus, tgClass };
            }
        }

        class Store {
            static getInputs() {
                const v = (id) => parseFloat(document.getElementById(id).value) || 0;
                return {
                    P_nom: v('P_nom'), n_nom: v('n_nom'), V_dc: v('V_dc'), p: v('p'),
                    D_out: v('D_out'), D_in: v('D_in'), g: v('g_mech'), h_m: v('h_m'),
                    
                    // --- PCB Stackup ---
                    layers: v('layers'), 
                    oz: v('oz'), 
                    t_plate_um: v('t_plate'),
                    t_core: v('t_core'),
                    t_pp: v('t_pp'),
                    t_mask: v('t_mask'),
                    turns: v('turns_layer'),
                    w_tr: v('w_trace'), 
                    k_end: v('k_end'),
                    // -----------------------------

                    Br: v('Br'), mu_r: v('mu_r'), alpha_p: v('alpha_p'),
                    sigma_mag: v('sigma_mag'), rho_cu: v('rho_cu'), alpha_cu: v('alpha_cu'), 
                    rho_mag: v('rho_mag'), rho_air: v('rho_air'), cf_fric: v('cf_fric'), Tg: v('Tg'),
                    k_leak: v('k_leak'), k_w: v('k_w'), PF: v('PF'), // 新增功率因数
                    h_conv: v('h_conv'), T_amb: v('T_amb'),
                    price_mag: v('price_mag'), price_pcb: v('price_pcb_unit'),
                    price_bearing: v('price_bearing'), price_mech: v('price_mech'), price_labor: v('price_labor'),
                    mag_grade: document.getElementById('mag_grade').value
                };
            }
            static save(inputs) { localStorage.setItem(Config.storageKey, JSON.stringify(inputs)); }
            static load() {
                try {
                    const saved = localStorage.getItem(Config.storageKey);
                    if (!saved) return false;
                    const data = JSON.parse(saved);
                    Object.keys(data).forEach(key => {
                        const el = document.getElementById(key);
                        if (el) el.value = data[key];
                    });
                    return true;
                } catch (e) { return false; }
            }
        }

        class UIManager {
            constructor() { this.exportData = []; }
            
            updateView(data) {
                const { inputs, geom, mag, perf, losses, thermal, cost, ipc } = data;
                const set = (id, val, d=2) => { const el = document.getElementById(id); if(el) el.innerText = val.toFixed(d); };
                const setHTML = (id, html) => { const el = document.getElementById(id); if(el) el.innerHTML = html; };

                // HUD
                set('hud_Pnom', inputs.P_nom, 0); set('hud_T', perf.T_nom, 2); set('hud_Eff', perf.eta, 1); 
                set('hud_Loss', losses.P_loss, 1); set('hud_Cost', cost.Cost_Total, 1); set('hud_Temp', thermal.T_final, 0); 
                setHTML('hud_IPC', `<span class="${ipc.ipcClass}">${ipc.ipcStatus}</span>`);

                // Main Sections
                set('res_hs', geom.h_s, 2); set('res_Ravg', geom.R_avg, 1); set('res_Nph', geom.N_ph, 0);
                set('res_Ltot', geom.L_total, 2); set('res_R20', geom.R_20, 4); set('res_Rhot', losses.R_hot, 4);

                set('res_geff', mag.g_eff, 2); set('res_PC', mag.PC, 3); set('res_Bg', mag.B_g, 3);
                set('res_Apole', mag.A_pole_mm2, 0); set('res_Phi', mag.Phi, 6);

                set('res_Erms', perf.E_rms, 2); set('res_Ke', perf.Ke, 4); set('res_Kv', perf.Kv, 0); 
                set('res_Tnom', perf.T_nom, 2); set('res_Kt', perf.Kt, 3);
                set('res_Pin', perf.Pin, 1); set('res_Irms', perf.I_rms, 2); set('res_J', perf.J, 1);
                set('res_PF', perf.PF, 2); set('res_Eff_perf', perf.eta, 1);

                // 电感相关行
                this.updateOrInsertRow('perf', '<b>相电感', 'L<sub>ph</sub>', perf.L_ph_uH, 'μH', 
                    `L ≈ k·μ₀·N<sub>ph</sub>²·A<sub>ph</sub> / g<sub>eff</sub>`, 
                    'res_Lph', 
                    `<span>k</span>:0.45(形状修正), <span>μ₀</span>:真空磁导率, <span>N<sub>ph</sub></span>:总匝数, <span>A<sub>ph</sub></span>:相面积`
                );
                
                this.updateOrInsertRow('perf', '└─ 线圈磁路气隙', 'g<sub>eff</sub>', mag.g_eff, 'mm', 
                    `g<sub>eff</sub> = h<sub>s</sub> + 2g`, 
                    'res_g_coil', 
                    `<span>h<sub>s</sub></span>:定子厚, <span>g</span>:单侧气隙`
                );

                this.updateOrInsertRow('perf', '└─ 单相有效面积', 'A<sub>ph</sub>', perf.A_phase_mm2, 'mm²', 
                    `A<sub>ph</sub> ≈ A<sub>ring</sub> / 3`, 
                    'res_Aph', 
                    `<span>A<sub>ring</sub></span>:定子圆环总面积 (假设三相均分)`
                );

                this.updateOrInsertRow('perf', '<b>电气时间常数', 'τ<sub>e</sub>', perf.Tau_e_us, 'μs', 
                    `τ<sub>e</sub> = L<sub>ph</sub> / R<sub>20</sub>`, 
                    'res_Taue', 
                    `<span>L<sub>ph</sub></span>:相电感, <span>R<sub>20</sub></span>:冷态电阻`
                );

                set('res_Pcu_dc', losses.P_cu_dc, 1); set('res_Pcu_ac', losses.P_cu_ac, 1); 
                set('res_Peddy', losses.P_eddy_tr, 1); set('res_Pmag_eddy', losses.P_mag_eddy, 2);
                set('res_Pmech', losses.P_mech, 1); set('res_Pstray', losses.P_stray, 1);
                set('res_Ploss', losses.P_loss, 1); set('res_Eff', losses.Eff, 1);

                set('res_Asurf', thermal.A_surf, 4); set('res_dT', thermal.dT, 1); set('res_Tfinal', thermal.T_final, 1);

                set('res_Mmag', cost.M_mag, 3); set('sub_mag', cost.Cost_Mag, 1); set('sub_pcb', cost.Cost_PCB, 1);
                set('sub_bearing', cost.Cost_Bear, 1); set('sub_mech', cost.Cost_Mech, 1);
                set('sub_labor', cost.Cost_Labor, 1); set('res_CostTotal', cost.Cost_Total, 1);

                set('res_Iipc10', ipc.I_ipc10, 2); set('res_Iipc40', ipc.I_ipc40, 2); set('res_CheckIrms', perf.I_rms, 2);
                setHTML('res_IPCMargin', `<span class="${ipc.ipcClass}">${ipc.ipcStatus}</span>`);
                setHTML('res_TgRisk', `<span class="${ipc.tgClass}">${ipc.tgStatus}</span>`);

                this.exportData = [
                    {cat:"Input", name:"额定功率", sym:"P_nom", val:inputs.P_nom, unit:"W"},
                    {cat:"Performance", name:"输入电功率", sym:"P_in", val:perf.Pin, unit:"W"},
                    {cat:"Performance", name:"电机效率", sym:"eta", val:perf.eta, unit:"%"},
                    {cat:"Performance", name:"功率因数", sym:"PF", val:perf.PF, unit:""},
                    {cat:"Magnetic", name:"气隙磁密Bg", sym:"B_g", val:mag.B_g, unit:"T"},
                    {cat:"Performance", name:"相电动势RMS", sym:"E_rms", val:perf.E_rms, unit:"V"},
                    {cat:"Performance", name:"相电流RMS", sym:"I_rms", val:perf.I_rms, unit:"A"},
                    {cat:"Performance", name:"转矩常数", sym:"K_t", val:perf.Kt, unit:"Nm/A"},
                    {cat:"Dynamics", name:"相电感", sym:"L_ph", val:perf.L_ph_uH, unit:"uH"},
                    {cat:"Dynamics", name:"有效气隙", sym:"g_eff", val:mag.g_eff, unit:"mm"},
                    {cat:"Dynamics", name:"电气时间常数", sym:"Tau_e", val:perf.Tau_e_us, unit:"us"},
                    {cat:"Loss", name:"直流铜损", sym:"P_cu_dc", val:losses.P_cu_dc, unit:"W"},
                    {cat:"Loss", name:"总损耗", sym:"P_loss", val:losses.P_loss, unit:"W"},
                    {cat:"Cost", name:"总成本", sym:"Total", val:cost.Cost_Total, unit:"RMB"}
                ];
                this.animateSaveStatus();
            }

            // Enhanced helper to inject detailed rows
            updateOrInsertRow(sectionId, name, sym, val, unit, formula, valId, defText) {
                let el = document.getElementById(valId);
                // If row doesn't exist, create it dynamically
                if (!el) {
                    const tbody = document.querySelector(`#${sectionId} tbody`);
                    const tr = document.createElement('tr');
                    // Add subtle background for sub-items
                    if(name.includes('└─')) tr.style.backgroundColor = "#f8fafc";
                    
                    tr.innerHTML = `
                        <td>${name}</td>
                        <td class="col-sym">${sym}</td>
                        <td><span class="res-val" id="${valId}">0</span></td>
                        <td>${unit}</td>
                        <td class="col-form" style="font-size:13px;">${formula}</td>
                        <td class="col-def" style="font-size:12px; color:#64748b;">${defText || ''}</td>
                    `;
                    tbody.appendChild(tr);
                    el = document.getElementById(valId);
                }
                // Update value
                el.innerText = val.toFixed(1);
            }

            animateSaveStatus() {
                const statusEl = document.getElementById('saveStatus');
                statusEl.innerText = "保存中...";
                statusEl.className = "save-status show saving";
                setTimeout(() => {
                    statusEl.innerText = "已自动保存";
                    statusEl.className = "save-status show";
                    setTimeout(() => { statusEl.classList.remove('show'); }, 2000);
                }, 300);
            }
            updateMagGrade() {
                const sel = document.getElementById("mag_grade");
                const val = sel.value;
                const brInput = document.getElementById("Br");
                if (val === "custom") {
                    brInput.readOnly = false;
                    brInput.style.backgroundColor = "#fffbf0"; 
                } else {
                    if (Config.magnets[val]) { brInput.value = Config.magnets[val]; app.calculate(); }
                    brInput.readOnly = true; brInput.style.backgroundColor = "#f1f5f9";
                }
            }
            nav(pageId) {
                document.querySelectorAll('.page-section').forEach(el => el.classList.remove('active'));
                document.getElementById(pageId).classList.add('active');
                document.querySelectorAll('.nav-btn').forEach(el => el.classList.remove('active'));
                const buttons = document.querySelectorAll('.nav-btn');
                for (let btn of buttons) { if(btn.getAttribute('onclick').includes(pageId)) btn.classList.add('active'); }
            }
            exportExcel() {
                let csvContent = "data:text/csv;charset=utf-8,\uFEFF";
                csvContent += "Category,Parameter,Symbol,Value,Unit\n";
                this.exportData.forEach(row => {
                    const v = (typeof row.val === 'number') ? row.val.toFixed(4) : row.val;
                    csvContent += `${row.cat},${row.name},${row.sym},${v},${row.unit}\n`;
                });
                const link = document.createElement("a");
                link.setAttribute("href", encodeURI(csvContent));
                link.setAttribute("download", "Motor_Design_Report.csv");
                document.body.appendChild(link); link.click(); document.body.removeChild(link);
            }
        }

        class Application {
            constructor() { this.ui = new UIManager(); }
            init() { Store.load(); this.ui.updateMagGrade(); this.calculate(); }
            calculate() {
                const inputs = Store.getInputs();
                const geom = PhysicsEngine.calcGeometry(inputs);
                const mag = PhysicsEngine.calcMagnetic(inputs, geom);
                const perf = PhysicsEngine.calcPerformance(inputs, geom, mag);
                const losses = PhysicsEngine.calcLosses(inputs, geom, mag, perf);
                const thermal = PhysicsEngine.calcThermal(inputs, losses, geom);
                const cost = PhysicsEngine.calcCost(inputs, geom);
                const ipc = PhysicsEngine.calcIPC(inputs, geom, perf, thermal);
                this.ui.updateView({ inputs, geom, mag, perf, losses, thermal, cost, ipc });
                Store.save(inputs);
            }
        }
        return new Application();
    })();
    window.onload = () => App.init();
    window.app = App;

</script>
</body>
</html>