fix(FOC): 修复角度控制中的冗余CAN传输与传感器角度获取错误

- 修正速度控制中角度传感器数据读取错误,使用current_sensorangle替代getRawAngle
- 在Timer中断中统一使用angle_control进行角度闭环控制
- 完善角度传感器类的角度读取逻辑,增加current_angle_deg和current_angle_rad成员变量
- 添加getcurrent_sensorangle接口用于获取当前原始角度值
This commit is contained in:
cbb
2025-11-08 21:04:35 +08:00
parent 99cc397931
commit b33574d392
5 changed files with 31 additions and 18 deletions
+1 -5
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@@ -167,8 +167,6 @@ float FOC_Controlroller::angle_control(float target_angle) {
shaft_angle = KTH7823.getRawAngle() * DEG2RAD;
// PID 控制计算
float Uq = angle_loop(shaft_angle - target_angle * ANGLE_FACTOR);
CAN0_transmiter.testfloat_union.f =
angle_loop(target_angle * ANGLE_FACTOR - shaft_angle);
// 设置相电压
setPhaseVoltage(Uq, 0.0f);
return shaft_angle;
@@ -200,11 +198,9 @@ float FOC_Controlroller::angle_control_NPID(float target_angle) {
* @return float: 当前速度
*/
float FOC_Controlroller::velocity_control(float target_velocity) {
shaft_angle = KTH7823.getRawAngle() * DEG2RAD;
shaft_angle = KTH7823.getcurrent_sensorangle() * DEG2RAD;
// PID 控制计算
float Uq = vel_loop(rt_velocity - target_velocity);
CAN0_transmiter.testfloat_union.f = Uq;
// 设置相电压
setPhaseVoltage(Uq, 0.0f);
return rt_velocity;
+11 -6
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@@ -12,22 +12,26 @@ PIDController::PIDController(float P, float I, float D, float ramp, float limit)
,
limit(limit) // PID控制器输出限幅
,
error_prev(0.0f), output_prev(0.0f), integral_prev(0.0f) {}
error_prev(0.0f), output_prev(0.0f), integral_prev(0.0f), timestamp_prev(0) {}
// PID 控制器函数
float PIDController::operator()(float error) {
// P环
float proportional = P * error;
// Tustin 散点积分(I环)
float integral =
integral_prev + I * TIME_SLICE * 0.5f * (error + error_prev);
// 添加积分限幅,防止积分饱和
float integral = integral_prev + I * TIME_SLICE * 0.5f * (error + error_prev);
integral = _constrain(integral, -limit, limit);
// D环(微分环节)
float derivative = D * (error - error_prev) / TIME_SLICE;
// 将P,I,D三环的计算值加起来
float output = proportional + integral + derivative;
output = _constrain(output, -limit, limit);
// 输出斜坡限制
if (output_ramp > 0) {
// 对PID的变化速率进行限制
float output_rate = (output - output_prev) / TIME_SLICE;
@@ -36,6 +40,7 @@ float PIDController::operator()(float error) {
else if (output_rate < -output_ramp)
output = output_prev - output_ramp * TIME_SLICE;
}
// 保存值(为了下一次循环)
integral_prev = integral;
output_prev = output;
@@ -53,7 +58,7 @@ float PIDController::operator()(float error) {
* @return void
*/
void PIDController::set_PID(float P, float I, float D) {
P = P;
I = I;
D = D;
this->P = P;
this->I = I;
this->D = D;
}
+1 -1
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@@ -175,7 +175,7 @@ void TIMER2_IRQHandler(void) {
FOC.rt_velocity = Vel_kalman.update(KTH7823.getVelocity());
if (FOC.control_mode == 1) {
FOC.angle_control_NPID(FOC.target_angle); // 角度闭环控制
FOC.angle_control(FOC.target_angle); // 角度闭环控制
} else if (FOC.control_mode == 2) {
FOC.velocity_control(FOC.target_velocity);// 速度闭环控制
} else if (FOC.control_mode == 4) {
+14 -5
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@@ -210,6 +210,8 @@ float angle_sensor::read_sensorAngle(void) {
// 使用DMA发送命令并接收数据
if (!spi_rw_half_word_dma(SPI0, DEFAULT_COMMAND, &u16data)) {
SPI_CS_DISABLE();
current_angle_deg = u16data * ANGLE_FACTOR;
current_angle_rad = u16data * RAD_FACTOR;
return u16data * ANGLE_FACTOR;
} else {
SPI_CS_DISABLE();
@@ -223,17 +225,16 @@ float angle_sensor::read_sensorAngle(void) {
* @return 累积角度值
*/
float angle_sensor::update(void) {
float currentAngle = read_sensorAngle();
read_sensorAngle();
if (m_firstUpdate) {
m_lastAngle = currentAngle;
m_lastAngle = current_angle_deg;
m_firstUpdate = false;
return m_cumulativeAngle;
}
// 计算角度变化
float delta = currentAngle - m_lastAngle;
float delta = current_angle_deg - m_lastAngle;
// 处理角度绕回情况(0度和360度之间的跳变)
// 如果变化超过180度,说明发生了绕回
@@ -249,7 +250,7 @@ float angle_sensor::update(void) {
velocity[VEL_FILTER_SIZE - 1] = delta * VELOCITY_SCALE;
m_cumulativeAngle += delta;
m_lastAngle = currentAngle;
m_lastAngle = current_angle_deg;
return m_cumulativeAngle;
}
@@ -288,6 +289,14 @@ float angle_sensor::getRawVelocity(void) const {
return velocity_filted / (VEL_FILTER_SIZE - 1);
// return velocity[VEL_FILTER_SIZE - 1];
}
/**
* @brief 获取角度值(原始级)
* @return 角度值(原始级)
*/
float angle_sensor::getcurrent_sensorangle(void) const {
return current_angle_deg;
}
/**
* @brief 重置累积角度值
+4 -1
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@@ -23,12 +23,15 @@ class angle_sensor {
float getRawAngle(void) const;
float getVelocity(void) const;
float getRawVelocity(void) const;
float getcurrent_sensorangle(void) const;
protected:
void KTH7823_init(void);
float m_cumulativeAngle;
float current_angle_deg;
float current_angle_rad;
bool m_firstUpdate;
float m_lastAngle;
float m_cumulativeAngle;
float m_lastcumulativeAngle;
float velocity[VEL_FILTER_SIZE] = {0.0f};
};