{
  "track": "FOC Mastery Track",
  "started": "2026-06-15",
  "estimated_completion": "2026-09-15",
  "levels": [
    {
      "level": 1,
      "name": "BLDC 六步换相",
      "status": "competent",
      "note": "已掌握，可作为 FOC 的对比参照"
    },
    {
      "level": 2,
      "name": "PMSM 数学模型 + dq 坐标系",
      "status": "completed",
      "note": "当前阶段：理解为什么要变换"
    },
    {
      "level": 3,
      "name": "Clarke 变换",
      "status": "completed",
      "note": "Clarke 四件套完成：theory + stm32_impl + fixed_point + python_verify"
    },
    {
      "level": 4,
      "name": "Park 变换",
      "status": "completed",
      "note": "Park 四件套完成：01_theory + 02_stm32_impl + 03_fixed_point + python_verify"
    },
    {
      "level": 5,
      "name": "SVPWM",
      "status": "next",
      "note": "下一步：SVPWM"
    },
    {
      "level": 6,
      "name": "电流环",
      "status": "pending"
    },
    {
      "level": 7,
      "name": "速度环",
      "status": "pending"
    },
    {
      "level": 8,
      "name": "位置环",
      "status": "pending"
    },
    {
      "level": 9,
      "name": "编码器 FOC",
      "status": "pending"
    },
    {
      "level": 10,
      "name": "无感 FOC（观测器）",
      "status": "pending"
    }
  ]
}