{
  "kind": "合成对照输入与本地模型/解析结果，非设备实测",
  "article": "https://qifudev.com/article/encoder-ppr-cpr-double-multiply/",
  "tool": "https://qifudev.com/tools/encoder-rate/",
  "model": "fA=rpm×PPR/60；事件率=fA×计数倍频",
  "inputs": {
    "rpm": "60",
    "ppr": "1000",
    "factor": "4"
  },
  "outputs": {
    "channelHz": 1000,
    "events": 4000,
    "intervalUs": 250
  },
  "extra_checks": [],
  "warnings": [],
  "limitation": "只预算理想速率，不模拟相位抖动、Z相、输入滤波或定时器最大计数能力。",
  "source": {
    "label": "ST：通用定时器与编码器接口",
    "url": "https://www.st.com/resource/en/application_note/an4013-introduction-to-timers-for-stm32-mcus-stmicroelectronics.pdf"
  },
  "measured": {
    "device": null,
    "firmware": null,
    "instrument": null,
    "conditions": null,
    "raw_result": null,
    "verdict": null
  }
}