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feat(V4B): V4.29 — C_eff 标定定稿 68 (0Ω板低频档) + 硬件疑点闭环

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硬件修复(用户): 拨码三极管 5.1K→0Ω → 第二颗33nF真正并联
0Ω板低频档实测: 52k/136µH→C_eff=68.9; 127k/23µH→68.3; 88k/48µH→68.1 (均值68.4≈名义66)
→ V4.28 的 43nF 为 5.1K 旧板带病特性(三极管未饱和导通, 并联只等效+8.6nF), 作废
改动: COIL_CAL_C_NF 43→68; 33nF档标定34(旧板)待0Ω板复测
验证: 68 回代残差 ≤1.5% (52k→138vs136; 127k→23vs23; 88k→48vs48)
文档: devlog V2.27 / spec V2.8 / design doc v0.6
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wangfq
2026-09-03 14:13:08 +08:00
parent 5c8a425da1
commit ac3fda09e2
6 changed files with 56 additions and 11 deletions
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utilities/at32f421_freertos_demo/inc/TaskLoop.h
+2 -1
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@@ -50,7 +50,8 @@
#define ENV_RECOVER_WAIT 500 // 恢复确认 (V4.25): 环境回正常(空闲)连续 ~5s 才解除预判, 黄灯灭
#define COIL_F_OK_MIN_KHZ 20 // 线圈频率合理窗 (V4.26): 默认低频档口径, <20kHz → L偏大
#define COIL_F_OK_MAX_KHZ 120 // 线圈频率合理窗 (V4.26): >120kHz → L偏小
#define COIL_CAL_C_NF 43 // 标定等效谐振电容 nF (V4.28): 低频档(66nF名义)实测 C_eff≈43 (41.3~45.5, 2台5组)
#define COIL_CAL_C_NF 68 // 标定等效谐振电容 nF (V4.29): 0Ω板 低频档(66nF名义)实测 C_eff=68.1~68.9 (均值68.4)
// 旧43 = 5.1K电阻旧板带病特性(三极管开关未饱和导通, 第二颗33nF未全量并入), 作废
#define COIL_CAL_C_NF_33 34 // 高频档(33nF名义)标定值: 实测 C_eff≈34.4 (33.8~35.0, 3组) — 用33nF档时改 COIL_CAL_C_NF 为34
#define COIL_DEF_C_NF 66 // 名义默认档电容 (保留: 注释/文档口径; 计算用 COIL_CAL_C_NF)