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https://gitee.com/dlmu-cone/tronone-h7-scaffold
synced 2026-07-24 03:27:45 +08:00
106 lines
3.5 KiB
C
106 lines
3.5 KiB
C
#include "ffc.h"
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#include <math.h>
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#include <string.h>
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#include <stdlib.h>
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// 内部使用的辅助函数：重置句柄
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static void FFC_ResetInstance(FFC_Handle_t *handle) {
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// 将整个结构体清零，相当于 C++ 的值初始化
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memset(handle, 0, sizeof(FFC_Handle_t));
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}
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float FFC_FeedForwardCalc(FFC_Handle_t *handle, float target) {
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if (handle == NULL) return 0.0f;
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// 获取时间间隔 dt
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handle->dt = DWT_GetDeltaT(&handle->DWT_CNT);
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// 设置当前目标值
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handle->set[FFC_NOW] = target;
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// 低通滤波处理 (完全保留原代码逻辑)
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// 注意：数学上 transform: x = x * dt/(LPF+dt) + x * LPF/(LPF+dt) 等同于 x = x。
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// 这里保留原代码逻辑以防有特殊 side effect 需求。
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float denominator = handle->configs.FFC_LPF + handle->dt;
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if (denominator != 0.0f) {
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handle->set[FFC_NOW] = handle->set[FFC_NOW] * handle->dt / denominator +
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handle->set[FFC_NOW] * handle->configs.FFC_LPF / denominator;
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}
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// 前馈计算: Proportional + Derivative + Acceleration
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// result = c1*x + c2*v + c3*a
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float p_term = handle->configs.c1 * handle->set[FFC_NOW];
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float d_term = 0.0f;
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float a_term = 0.0f;
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if (handle->dt > 0.000001f) { // 防止除以零
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d_term = handle->configs.c2 * (handle->set[FFC_NOW] - handle->set[FFC_LAST]) / handle->dt;
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a_term = handle->configs.c3 * (handle->set[FFC_NOW] - 2 * handle->set[FFC_LAST] + handle->set[FFC_LLAST]) / (handle->dt * handle->dt);
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}
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handle->result = p_term + d_term + a_term;
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// 限幅
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handle->result = abs_clip(handle->result, handle->configs.MaxOutput);
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// 更新历史状态
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// 注意：原 C++ 代码中先更新 LAST 再更新 LLAST，这会导致移位寄存器逻辑变为 LLAST = (新的)LAST。
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// 为了保持转换的一致性，这里保留原代码的顺序。
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handle->set[FFC_LAST] = handle->set[FFC_NOW];
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handle->set[FFC_LLAST] = handle->set[FFC_LAST];
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return handle->result;
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}
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void FFC_SetConfig(FFC_Handle_t *handle, FFC_Init_Config_s config) {
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if (handle == NULL) return;
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// 使用值初始化清除 ffc_s 对象
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FFC_ResetInstance(handle);
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// 复制配置参数
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handle->configs = config;
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}
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void FFC_CheckPointer(FFC_Handle_t *handle, float *get) {
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if (handle == NULL) return;
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handle->get_data = get;
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}
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void FFC_Init(FFC_Handle_t *handle, FFC_Init_Config_s config, float *get) {
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if (handle == NULL) return;
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// 对应 C++: FFCSetConfig(config, get)
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FFC_SetConfig(handle, config);
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if (get != NULL) {
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FFC_CheckPointer(handle, get);
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}
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}
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float FFC_Handle(FFC_Handle_t *handle, float target) {
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return FFC_FeedForwardCalc(handle, target);
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}
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void FFC_DebugControl(FFC_Handle_t *handle, float *imu_data, float *data_from_gimbalctrl_yaw) {
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if (handle == NULL || imu_data == NULL || data_from_gimbalctrl_yaw == NULL) return;
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handle->debug.count++;
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handle->debug.total_imu_yaw = *imu_data;
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// 生成正弦波目标值
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handle->debug.target = (float)(sin(handle->debug.count * 0.003) * 1.0);
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// 输出到 gimbal ctrl
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*data_from_gimbalctrl_yaw = handle->debug.target;
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// 逻辑判断
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if (fabsf(*data_from_gimbalctrl_yaw) < 0.01f && handle->debug.if_gimbal_ctrl == 0) {
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handle->debug.if_gimbal_ctrl = 1; // true
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DWT_GetDeltaT(&handle->debug.DWT_CNT);
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}
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if (handle->debug.if_gimbal_ctrl == 1 && fabsf(*imu_data) < 0.01f) {
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handle->debug.if_gimbal_ctrl = 0; // false
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handle->debug.error = DWT_GetDeltaT(&handle->debug.DWT_CNT);
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}
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} |