refactor: replace IMU mount enum with user-defined rotation matrix
Replace compile-time orientation enum/macro approach with a general 3x3 rotation matrix IMU2BODY_ROTATION. User fills in the matrix according to actual IMU mounting orientation. Matrix must be a proper rotation (det = +1) to preserve right-handed coordinate system.
This commit is contained in:
+14
-28
@@ -116,34 +116,20 @@ INS_t *INS_Init(void)
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief 根据IMU安装方向宏,对原始数据进行轴映射和符号修正
|
||||
* @brief 通过旋转矩阵将IMU坐标系数据变换到机体坐标系
|
||||
*
|
||||
* @param raw 原始IMU数据(3轴)
|
||||
* @param out 修正后数据(3轴)
|
||||
* out = IMU2BODY_ROTATION * raw
|
||||
*
|
||||
* @param raw IMU坐标系原始数据(3轴)
|
||||
* @param out 机体坐标系数据(3轴)
|
||||
*/
|
||||
void IMU_Mount_Correct(const float raw[3], float out[3])
|
||||
{
|
||||
#if IMU_MOUNT_ORIENTATION == IMU_MOUNT_NORMAL
|
||||
out[0] = raw[0];
|
||||
out[1] = raw[1];
|
||||
out[2] = raw[2];
|
||||
#elif IMU_MOUNT_ORIENTATION == IMU_MOUNT_YAW_180
|
||||
out[0] = -raw[0];
|
||||
out[1] = -raw[1];
|
||||
out[2] = raw[2];
|
||||
#elif IMU_MOUNT_ORIENTATION == IMU_MOUNT_ROLL_180
|
||||
out[0] = raw[0];
|
||||
out[1] = -raw[1];
|
||||
out[2] = -raw[2];
|
||||
#elif IMU_MOUNT_ORIENTATION == IMU_MOUNT_PITCH_180
|
||||
out[0] = -raw[0];
|
||||
out[1] = raw[1];
|
||||
out[2] = -raw[2];
|
||||
#else
|
||||
out[0] = raw[0];
|
||||
out[1] = raw[1];
|
||||
out[2] = raw[2];
|
||||
#endif
|
||||
static const float R[3][3] = IMU2BODY_ROTATION;
|
||||
|
||||
out[0] = R[0][0] * raw[0] + R[0][1] * raw[1] + R[0][2] * raw[2];
|
||||
out[1] = R[1][0] * raw[0] + R[1][1] * raw[1] + R[1][2] * raw[2];
|
||||
out[2] = R[2][0] * raw[0] + R[2][1] * raw[1] + R[2][2] * raw[2];
|
||||
}
|
||||
|
||||
/* 注意以1kHz的频率运行此任务 */
|
||||
@@ -153,14 +139,14 @@ void INS_Task(void)
|
||||
const float gravity[3] = {0, 0, 9.81f};
|
||||
|
||||
dt = DWT_GetDeltaT(&INS_DWT_Count);
|
||||
t += dt;
|
||||
//t += dt;
|
||||
|
||||
// ins update
|
||||
if ((count % 1) == 0)
|
||||
{
|
||||
BMI088_Read(&BMI088);
|
||||
|
||||
// IMU安装方向修正:根据宏IMU_MOUNT_ORIENTATION进行轴映射和符号翻转
|
||||
// IMU安装方向修正:通过IMU2BODY_ROTATION旋转矩阵将IMU数据转换到机体坐标系
|
||||
{
|
||||
float imu_accel[3] = {BMI088.Accel[X], BMI088.Accel[Y], BMI088.Accel[Z]};
|
||||
float imu_gyro[3] = {BMI088.Gyro[X], BMI088.Gyro[Y], BMI088.Gyro[Z]};
|
||||
@@ -211,8 +197,8 @@ void INS_Task(void)
|
||||
if ((count % 1000) == 0)
|
||||
{
|
||||
// 1Hz 可以加入monitor函数,检查IMU是否正常运行/离线
|
||||
//LOGINFO("[IMU] Temperature: %d C, PWM: %d", (int)(BMI088.Temperature * 100), (int)TempCtrl.Output);
|
||||
//LOGINFO("[IMU] Yaw: %d, Pitch: %d, Roll: %d", (int)(INS.Yaw*100), (int)(INS.Pitch*100), (int)(INS.Roll*100));
|
||||
LOGINFO("[IMU] Temperature: %d C, PWM: %d", (int)(BMI088.Temperature * 100), (int)TempCtrl.Output);
|
||||
LOGINFO("[IMU] Yaw: %d, Pitch: %d, Roll: %d", (int)(INS.Yaw*100), (int)(INS.Pitch*100), (int)(INS.Roll*100));
|
||||
}
|
||||
|
||||
count++;
|
||||
|
||||
+18
-12
@@ -25,15 +25,19 @@
|
||||
|
||||
#define INS_TASK_PERIOD 1
|
||||
|
||||
/* IMU安装方向配置 */
|
||||
typedef enum {
|
||||
IMU_MOUNT_NORMAL = 0, // IMU与机体坐标系一致
|
||||
IMU_MOUNT_YAW_180, // IMU绕Z轴旋转180°
|
||||
IMU_MOUNT_ROLL_180, // IMU绕X轴旋转180°(上下颠倒)
|
||||
IMU_MOUNT_PITCH_180, // IMU绕Y轴旋转180°(前后颠倒)
|
||||
} IMU_Mount_Orientation_e;
|
||||
|
||||
#define IMU_MOUNT_ORIENTATION IMU_MOUNT_NORMAL
|
||||
/* IMU坐标系 -> 机体坐标系旋转矩阵(必须为右手系旋转,行列式为+1)
|
||||
* 用户根据IMU实际安装方向填写,out = R * raw
|
||||
* 常见安装方向示例(供参考):
|
||||
* 正常安装: {{ 1, 0, 0}, { 0, 1, 0}, { 0, 0, 1}}
|
||||
* 绕Z转180°: {{-1, 0, 0}, { 0,-1, 0}, { 0, 0, 1}}
|
||||
* 绕X转180°: {{ 1, 0, 0}, { 0,-1, 0}, { 0, 0,-1}}
|
||||
* 绕Y转180°: {{-1, 0, 0}, { 0, 1, 0}, { 0, 0,-1}}
|
||||
*/
|
||||
#define IMU2BODY_ROTATION { \
|
||||
{ 1, 0, 0}, \
|
||||
{ 0, -1, 0}, \
|
||||
{ 0, 0, -1} \
|
||||
}
|
||||
|
||||
typedef struct
|
||||
{
|
||||
@@ -78,10 +82,12 @@ typedef struct
|
||||
} IMU_Param_t;
|
||||
|
||||
/**
|
||||
* @brief 根据IMU安装方向宏,对原始数据进行轴映射和符号修正
|
||||
* @brief 通过变换矩阵将IMU坐标系数据变换到机体坐标系
|
||||
*
|
||||
* @param raw 原始IMU数据(3轴)
|
||||
* @param out 修正后数据(3轴)
|
||||
* out = IMU2BODY_ROTATION * raw
|
||||
*
|
||||
* @param raw IMU坐标系原始数据(3轴)
|
||||
* @param out 机体坐标系数据(3轴)
|
||||
*/
|
||||
void IMU_Mount_Correct(const float raw[3], float out[3]);
|
||||
|
||||
|
||||
Reference in New Issue
Block a user