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feat(V4B): V4.28 — L估算引入标定等效谐振电容 COIL_CAL_C_NF=43

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问题: V4.27 频率对齐后 L 仍有系统性 ~1.5 倍偏差(实际/打印 1.46~1.64)
根因: 公式用名义档位电容 66nF, 但 5 组 LCR 实测反推振荡回路等效
      C_eff=41.3~45.5nF (均值 42.97) — 频率真实+LCR真实下偏差收敛到 C 一参
改动: coil_l_uH 改用 COIL_CAL_C_NF 43 (宏可标定); COIL_DEF_C_NF 保留名义口径
验证: 43nF 回代 5 组残差 ±6% 内 (64k→144vs136 +5.7%, 113k→46vs48 -3.9% ...)
标定指引: LCR 测 L → C=2.533e7/(f²×L) 多颗平均改宏
文档: devlog V2.26 / spec V2.7 / design doc v0.5
This commit is contained in:
wangfq
2026-09-03 12:11:02 +08:00
parent 6b7d624ff0
commit c3a5a6f6ff
6 changed files with 60 additions and 9 deletions
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utilities/at32f421_freertos_demo/inc/cmcng.h
+2 -2
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@@ -14,10 +14,10 @@
#define __CMCNG_H__
#define PRODUCT_MODEL "DLD154"
#define FIRMWARE_VER "4.27"
#define FIRMWARE_VER "4.28"
#define HARDWARE_VER "3.00"
#define FIRMWARE_VER_MAIN 4
#define FIRMWARE_VER_SUB 27
#define FIRMWARE_VER_SUB 28
#define HARDWARE_VER_MAIN 3
#define HARDWARE_VER_SUB 0