feat(FOC): 增加闭环速度控制算法

- 重构setPhaseVoltage函数实现,提高执行效率
- 增加update_power函数,动态更新电源电压
- 优化velocity_open_loop函数,调用、setPhaseVoltage避免重复代码
- 实现angle_control和velocity_control闭环控制函数
- 调整PID控制器参数初始化及增加参数设置接口
- 改进电流和编码器速度卡尔曼滤波器实现
- 更新CAN通信数据打包逻辑,增加测试字段
- 在定时器中断中集成多种控制模式切换逻辑
- 完善角度传感器数据处理,改进速度计算方法
- 减小速度滤波数组大小,提升响应速度
This commit is contained in:
cbb
2025-11-06 02:07:15 +08:00
parent 516a7bd41d
commit 971374d8ec
12 changed files with 355 additions and 172 deletions
+71 -75
View File
@@ -1,4 +1,5 @@
#include "DengFOC.h" #include "DengFOC.h"
#include "Can.h"
#include "Filter.h" #include "Filter.h"
#include "Timer.h" #include "Timer.h"
#include "adc.h" #include "adc.h"
@@ -14,21 +15,22 @@
constexpr double PI = 3.1415926535897932384626433832795f; constexpr double PI = 3.1415926535897932384626433832795f;
constexpr float DEG2RAD = 1.0f / 360.0f * 6.28318530718f; constexpr float DEG2RAD = 1.0f / 360.0f * 6.28318530718f;
constexpr float RAD2DEG = 360.0f / 6.28318530718f; constexpr float RAD2DEG = 360.0f / 6.28318530718f;
constexpr float ANGLE_FACTOR = 25.0f / 360.0f * 2.0f * 3.14159265358979323846f;
constexpr float _1_SQRT3 = 0.57735026919f; constexpr float _1_SQRT3 = 0.57735026919f;
constexpr float _2_SQRT3 = 1.15470053838f; constexpr float _2_SQRT3 = 1.15470053838f;
constexpr float _3PI_2 = 4.71238898038f; constexpr float _3PI_2 = 4.71238898038f;
constexpr u8 PP = 11; constexpr u8 PP = 11;
constexpr float DIR = -1.0; constexpr float DIR = 1.0;
constexpr float sqrt3 = 1.73205080757f; // sqrt(3)的预计算值 constexpr float sqrt3 = 1.73205080757f; // sqrt(3)的预计算值
constexpr float zero_electric_angle = 0.0f; constexpr float zero_electric_angle = 0.0f;
extern sampler sampler; extern sampler sampler;
extern angle_sensor KTH7823; extern angle_sensor KTH7823;
extern CAN_transmiter CAN0_transmiter;
CurrentKalman curU_kalman(0.0f, 0.0026f, 4.8f, 0.0001f, 1e-6f, 0.02f); CurrentKalman curU_kalman(0.0f, 0.0026f, 4.8f, 0.0001f, 1e-6f, 0.02f);
CurrentKalman curV_kalman(0.0f, 0.0026f, 4.8f, 0.0001f, 1e-6f, 0.02f); CurrentKalman curV_kalman(0.0f, 0.0026f, 4.8f, 0.0001f, 1e-6f, 0.02f);
CurrentKalman curW_kalman(0.0f, 0.0026f, 4.8f, 0.0001f, 1e-6f, 0.02f); CurrentKalman curW_kalman(0.0f, 0.0026f, 4.8f, 0.0001f, 1e-6f, 0.02f);
// 初始变量及函数定义 // 初始变量及函数定义
#define _constrain(amt, low, high) \ #define _constrain(amt, low, high) \
((amt) < (low) ? (low) : ((amt) > (high) ? (high) : (amt))) ((amt) < (low) ? (low) : ((amt) > (high) ? (high) : (amt)))
@@ -65,15 +67,17 @@ FOC_Controlroller::FOC_Controlroller() { ; }
*/ */
inline void FOC_Controlroller::setPhaseVoltage(float Uq, float Ud, inline void FOC_Controlroller::setPhaseVoltage(float Uq, float Ud,
float angle_el) { float angle_el) {
angle_el = _normalizeAngle(angle_el); // 帕克逆变换 (直接计算,避免函数调用开销)
// 帕克逆变换 const float sin_el = sin(angle_el);
Ualpha = -Uq * sin(angle_el); const float cos_el = cos(angle_el);
Ubeta = Uq * cos(angle_el); Ualpha = -Uq * sin_el;
Ubeta = Uq * cos_el;
// 克拉克逆变换 (预计算常量值)
Ua = Ualpha + v_half;
Ub = (sqrt3 * Ubeta - Ualpha) * 0.5f + v_half;
Uc = (-Ualpha - sqrt3 * Ubeta) * 0.5f + v_half;
// 克拉克逆变换
Ua = Ualpha + voltage_power_supply / 2;
Ub = (sqrt3 * Ubeta - Ualpha) / 2 + voltage_power_supply / 2;
Uc = (-Ualpha - sqrt3 * Ubeta) / 2 + voltage_power_supply / 2;
// 计算占空比 // 计算占空比
Ua = constrain(Ua, 0.0f, voltage_power_supply, 0.0f, limit_voltage); Ua = constrain(Ua, 0.0f, voltage_power_supply, 0.0f, limit_voltage);
Ub = constrain(Ub, 0.0f, voltage_power_supply, 0.0f, limit_voltage); Ub = constrain(Ub, 0.0f, voltage_power_supply, 0.0f, limit_voltage);
@@ -84,6 +88,33 @@ inline void FOC_Controlroller::setPhaseVoltage(float Uq, float Ud,
Set_3Pwm(dc_a, dc_b, dc_c); Set_3Pwm(dc_a, dc_b, dc_c);
// std::printf("PWM:%f,%f,%f\n", dc_a, dc_b, dc_c); // std::printf("PWM:%f,%f,%f\n", dc_a, dc_b, dc_c);
} }
/**
* @brief 电机关机
*
*/
void FOC_Controlroller::shut_down() {
is_shut_down = 100;
gpio_bit_reset(GPIOB, GPIO_PIN_12);
}
/**
* @brief 电机恢复
*
*/
void FOC_Controlroller::resume() {
over_current = 0;
temp_error = 0;
voltage_error = 0;
is_shut_down = 0;
gpio_bit_set(GPIOB, GPIO_PIN_12);
}
/**
* @brief 更新电源电压
*
*/
void FOC_Controlroller::update_power(void) {
voltage_power_supply = sampler.get_vbus_voltage();
v_half = voltage_power_supply * 0.5f;
}
/** /**
* @brief 速度开环控制 * @brief 速度开环控制
@@ -94,36 +125,16 @@ inline void FOC_Controlroller::setPhaseVoltage(float Uq, float Ud,
float FOC_Controlroller::velocity_open_loop() { float FOC_Controlroller::velocity_open_loop() {
// 通过时间间隔和目标速度计算需要转动的机械角度,存储在shaft_angle中,在此之前,还需要对轴角度归一化 // 通过时间间隔和目标速度计算需要转动的机械角度,存储在shaft_angle中,在此之前,还需要对轴角度归一化
// 预计算常量 1e-4 = 100微秒控制周期 // 预计算常量 1e-4 = 100微秒控制周期
shaft_angle = _normalizeAngle(shaft_angle + target_velocity * 1e-4f); shaft_angle =
_normalizeAngle(shaft_angle + target_velocity * ANGLE_FACTOR * 1e-4f);
// 直接计算电气角度,避免函数调用开销 // 直接计算电气角度,避免函数调用开销
float angle_el = shaft_angle * PP + zero_electric_angle; float angle_el = _normalizeAngle(shaft_angle * PP + zero_electric_angle);
angle_el = _normalizeAngle(angle_el);
// 因为在开环控制中,Ud始终为0,只控制Uq // 因为在开环控制中,Ud始终为0,只控制Uq
const float Uq = voltage_power_supply / 2.0f; const float Uq = voltage_power_supply / 2.0f;
const float Ud = 0.0f;
// 帕克逆变换 (直接计算,避免函数调用开销) setPhaseVoltage(Uq, 0.0f, angle_el);
const float sin_el = sin(angle_el);
const float cos_el = cos(angle_el);
Ualpha = -Uq * sin_el;
Ubeta = Uq * cos_el;
// 克拉克逆变换 (预计算常量值)
const float v_half = voltage_power_supply * 0.5f; // 电源电压的一半
Ua = Ualpha + v_half;
Ub = (sqrt3 * Ubeta - Ualpha) * 0.5f + v_half;
Uc = (-Ualpha - sqrt3 * Ubeta) * 0.5f + v_half;
// 计算占空比
Ua = constrain(Ua, 0.0f, voltage_power_supply, 0.0f, limit_voltage * 2);
Ub = constrain(Ub, 0.0f, voltage_power_supply, 0.0f, limit_voltage * 2);
Uc = constrain(Uc, 0.0f, voltage_power_supply, 0.0f, limit_voltage * 2);
const float dc_a = _constrain(Ua / voltage_power_supply, 0.0f, 1.0f);
const float dc_b = _constrain(Ub / voltage_power_supply, 0.0f, 1.0f);
const float dc_c = _constrain(Uc / voltage_power_supply, 0.0f, 1.0f);
Set_3Pwm(dc_a, dc_b, dc_c);
return limit_voltage; return limit_voltage;
} }
@@ -142,55 +153,40 @@ float FOC_Controlroller::velocity_open_loop() {
// std::printf("0电角度:%f", zero_electric_angle); // std::printf("0电角度:%f", zero_electric_angle);
// } // }
void FOC_Controlroller::shut_down() { /**
is_shut_down = 100; * @brief 角度闭环控制
gpio_bit_reset(GPIOB, GPIO_PIN_12); *
} * @param target_angle: 目标角度
* @return float: q轴电压
void FOC_Controlroller::resume() { */
over_current = 0; float FOC_Controlroller::angle_control(float target_angle) {
temp_error = 0; shaft_angle = KTH7823.getRawAngle() * DEG2RAD;
voltage_error = 0; static float Kp = 2.0f;
is_shut_down = 0; float Uq =
gpio_bit_set(GPIOB, GPIO_PIN_12); 1.0f - _constrain(Kp * (target_angle - DIR * shaft_angle) * RAD2DEG,
} -voltage_power_supply, voltage_power_supply);
static float Ud = 0.0f;
void FOC_Controlroller::update_power(void) { // 直接计算电气角度,避免函数调用开销
voltage_power_supply = sampler.get_vbus_voltage(); float angle_el = _normalizeAngle(shaft_angle * PP + zero_electric_angle);
// 设置相电压
setPhaseVoltage(Uq, 0.0f, angle_el);
return shaft_angle;
} }
/** /**
* @brief 角度闭环控制 * @brief 速度闭环控制
* *
* @param target_velocity: 目标速度 * @param target_velocity: 目标速度
* @return float: q轴电压 * @return float: q轴电压
*/ */
float FOC_Controlroller::angle_control(float target_angle) { float FOC_Controlroller::velocity_control(float target_velocity) {
float Sensor_angel = KTH7823.getRawAngle() * DEG2RAD; // PID 控制计算
float Kp = 2.0f; float Uq = v_half - vel_loop(target_velocity - rt_velocity);
float Uq = _constrain(Kp * (target_angle - DIR * Sensor_angel) * RAD2DEG, shaft_angle = KTH7823.getRawAngle() * DEG2RAD;
-voltage_power_supply, voltage_power_supply);
shaft_angle = _normalizeAngle(KTH7823.read_sensorAngle() * DEG2RAD);
float Ud = 0.0f;
// 直接计算电气角度,避免函数调用开销 // 直接计算电气角度,避免函数调用开销
float angle_el = _normalizeAngle(shaft_angle * PP + zero_electric_angle); float angle_el = _normalizeAngle(shaft_angle * PP + zero_electric_angle);
// 设置相电压
// 帕克逆变换 setPhaseVoltage(Uq, 0.0f, angle_el);
Ualpha = -Uq * sin(angle_el); return rt_velocity;
Ubeta = Uq * cos(angle_el);
// 克拉克逆变换
Ua = Ualpha + voltage_power_supply / 2;
Ub = (sqrt3 * Ubeta - Ualpha) / 2 + voltage_power_supply / 2;
Uc = (-Ualpha - sqrt3 * Ubeta) / 2 + voltage_power_supply / 2;
// 计算占空比
Ua = constrain(Ua, 0.0f, voltage_power_supply, 0.0f, limit_voltage);
Ub = constrain(Ub, 0.0f, voltage_power_supply, 0.0f, limit_voltage);
Uc = constrain(Uc, 0.0f, voltage_power_supply, 0.0f, limit_voltage);
float dc_a = _constrain(Ua / voltage_power_supply, 0.0f, 1.0f);
float dc_b = _constrain(Ub / voltage_power_supply, 0.0f, 1.0f);
float dc_c = _constrain(Uc / voltage_power_supply, 0.0f, 1.0f);
Set_3Pwm(dc_a, dc_b, dc_c);
return Sensor_angel;
} }
+3 -3
View File
@@ -21,8 +21,7 @@ class FOC_Controlroller {
float velocity_open_loop(); float velocity_open_loop();
float angle_control(float target_angle); float angle_control(float target_angle);
// void SET_VEL_PID(float P, float I, float D, float ramp); // 速度环PID设置 float velocity_control(float target_velocity);
// void SET_ANGLE_PID(float P, float I, float D, float ramp); // 角度环PID设置
void update_power(void); void update_power(void);
void DFOC_alignSensor(int _PP); void DFOC_alignSensor(int _PP);
@@ -36,9 +35,10 @@ class FOC_Controlroller {
float Ualpha, Ubeta = 0, Ua = 0, Ub = 0, Uc = 0; float Ualpha, Ubeta = 0, Ua = 0, Ub = 0, Uc = 0;
float zero_electric_angle = 0; float zero_electric_angle = 0;
float voltage_power_supply = 24.0f; // 电源电压 float voltage_power_supply = 24.0f; // 电源电压
float v_half = voltage_power_supply * 0.5f; // 电源电压的一半
PIDController vel_loop = PIDController vel_loop =
PIDController{2, 0, 0, 100000, voltage_power_supply / 2}; PIDController{0.8f, 3.0f, 0, 100000, voltage_power_supply};
PIDController angle_loop = PIDController{2, 0, 0, 100000, 100}; PIDController angle_loop = PIDController{2, 0, 0, 100000, 100};
void setPhaseVoltage(float Uq, float Ud, float angle_el); void setPhaseVoltage(float Uq, float Ud, float angle_el);
+68 -24
View File
@@ -1,9 +1,15 @@
#include "Filter.h" #include "Filter.h"
#include "ang_sensor.h"
#include <algorithm> #include <algorithm>
#include <array> #include <array>
#include <cstring> #include <cstring>
#include <stdint.h> #include <stdint.h>
extern angle_sensor KTH7823;
EncoderVelocityKalman Vel_kalman(KTH7823.getVelocity(), 1e-5f, 1e-6f, 0.05f);
// 队列实现 // 队列实现
void CircularBuffer::enqueue(const float value) { void CircularBuffer::enqueue(const float value) {
buffer[head] = value; buffer[head] = value;
@@ -73,54 +79,92 @@ float medium_filter(float values[], u8 size) {
*/ */
CurrentKalman::CurrentKalman(float initial_current, float L, float R, float T, CurrentKalman::CurrentKalman(float initial_current, float L, float R, float T,
float Q, float R_noise) float Q, float R_noise)
: x(initial_current), P(1.0f), // 初始误差协方差 : kalman(initial_current, 1.0f, Q, R_noise), L(L), R_m(R), T(T) {}
Q(Q), // 过程噪声
R(R_noise), // 测量噪声
L(L), R_m(R), T(T) {
CircularBuffer buffer;
}
/*! /*!
\brief 更新卡尔曼滤波器状态 \brief 更新卡尔曼滤波器状态
\param[in] measured_current 测量电流值 \param[in] measured_value 测量值
\param[in] applied_voltage 应用电压值 \param[in] applied_voltage 应用电压值
\retval 估计的电流值 \retval 估计的电流值
\note 实现卡尔曼滤波的预测和更新步骤 \note 实现卡尔曼滤波的预测和更新步骤
*/ */
float CurrentKalman::update(float measured_current, float applied_voltage) { float CurrentKalman::update(float measured_value, float applied_voltage) {
// 1. 预测步骤 - 基于电机模型 // 1. 预测步骤 - 基于电机模型
float predicted_current = x + T * (applied_voltage - R_m * x) / L; float predicted_current = kalman.getState() + T * (applied_voltage - R_m * kalman.getState()) / L;
// 2. 计算预测误差协方差 // 2. 预测误差协方差已经在kalman.predict中处理
float P_pred = P + Q;
// 3. 计算卡尔曼增益 // 3. 执行预测
float K = P_pred / (P_pred + R); kalman.predict(predicted_current);
// 4. 更新状态估计 // 4. 更新步骤 - 直接使用测量值更新
x = predicted_current + K * (measured_current - predicted_current); return kalman.update(measured_value);
// 5. 更新估计误差协方差
P = (1 - K) * P_pred;
return x;
} }
/*! /*!
\brief 获取当前电流估计值 \brief 获取当前电流估计值
\retval 当前电流估计值 \retval 当前电流估计值
*/ */
float CurrentKalman::getCurrent() const { return x; } float CurrentKalman::getCurrent() const { return kalman.getState(); }
/*! /*!
\brief 设置过程噪声协方差 \brief 设置过程噪声协方差
\param[in] q 过程噪声协方差值 \param[in] q 过程噪声协方差值
\retval none \retval none
*/ */
void CurrentKalman::setProcessNoise(float q) { Q = q; } void CurrentKalman::setProcessNoise(float q) { kalman.setProcessNoise(q); }
/*! /*!
\brief 设置测量噪声协方差 \brief 设置测量噪声协方差
\param[in] r 测量噪声协方差值 \param[in] r 测量噪声协方差值
\retval none \retval none
*/ */
void CurrentKalman::setMeasurementNoise(float r) { R = r; } void CurrentKalman::setMeasurementNoise(float r) { kalman.setMeasurementNoise(r); }
// EncoderVelocityKalman类的实现
/*!
\brief 构造函数,初始化编码器速度卡尔曼滤波器参数
\param[in] initial_velocity 初始速度值 (rad/s)
\param[in] T 控制周期(s)
\param[in] Q 过程噪声协方差(典型值: 1e-4 ~ 1e-2)
\param[in] R 测量噪声协方差(典型值: 速度范围的1%~5%)
\retval none
*/
EncoderVelocityKalman::EncoderVelocityKalman(float initial_velocity, float T,
float Q, float R)
: kalman(initial_velocity, T, Q, R) {}
/*!
\brief 更新卡尔曼滤波器状态
\param[in] measured_velocity 测量的速度值 (rad/s)
\retval 估计的速度值 (rad/s)
\note 实现卡尔曼滤波的预测和更新步骤,假设速度变化符合随机游走模型
*/
float EncoderVelocityKalman::update(float measured_velocity) {
// 1. 预测步骤 - 假设速度符合随机游走模型(加速度为0)
// 由于速度变化缓慢,我们可以简单预测速度保持不变
kalman.predict(kalman.getState());
// 2. 更新步骤 - 直接使用测量值更新
return kalman.update(measured_velocity);
}
/*!
\brief 获取当前速度估计值
\retval 当前速度估计值 (rad/s)
*/
float EncoderVelocityKalman::getVelocity() const { return kalman.getState(); }
/*!
\brief 设置过程噪声协方差
\param[in] q 过程噪声协方差值
\retval none
*/
void EncoderVelocityKalman::setProcessNoise(float q) {
kalman.setProcessNoise(q);
}
/*!
\brief 设置测量噪声协方差
\param[in] r 测量噪声协方差值
\retval none
*/
void EncoderVelocityKalman::setMeasurementNoise(float r) {
kalman.setMeasurementNoise(r);
}
+109 -4
View File
@@ -34,6 +34,92 @@ class CircularBuffer {
float medium_filter(float values[], u8 size); float medium_filter(float values[], u8 size);
/*!
\brief 通用卡尔曼滤波器模板类
\note 可用于各种基于线性系统的状态估计
*/
template <typename T> class KalmanFilter {
private:
T x; // 状态估计
T P; // 估计误差协方差
T Q; // 过程噪声协方差
T R; // 测量噪声协方差
public:
/*!
\brief 构造函数
\param[in] initial_state 初始状态值
\param[in] initial_error_covariance 初始误差协方差
\param[in] process_noise 过程噪声协方差
\param[in] measurement_noise 测量噪声协方差
*/
KalmanFilter(T initial_state, T initial_error_covariance, T process_noise,
T measurement_noise)
: x(initial_state), P(initial_error_covariance), Q(process_noise),
R(measurement_noise) {}
/*!
\brief 预测步骤
\param[in] state_prediction 状态预测值
\retval none
*/
void predict(T state_prediction) {
x = state_prediction;
P += Q;
}
/*!
\brief 更新步骤
\param[in] measurement 测量值
\param[in] measurement_prediction 测量预测值
\retval 估计的状态值
*/
T update(T measurement, T measurement_prediction) {
T y = measurement - measurement_prediction; // 测量残差
T S = P + R; // 残差协方差
T K = P / S; // 卡尔曼增益
x += K * y; // 更新状态估计
P = (1 - K) * P; // 更新误差协方差
return x;
}
/*!
\brief 直接更新步骤(适用于状态直接可测的情况)
\param[in] measurement 测量值
\retval 估计的状态值
*/
T update(T measurement) {
T K = P / (P + R); // 卡尔曼增益
x += K * (measurement - x); // 更新状态估计
P = (1 - K) * P; // 更新误差协方差
return x;
}
/*!
\brief 获取当前状态估计值
\retval 当前状态估计值
*/
T getState() const { return x; }
/*!
\brief 设置过程噪声协方差
\param[in] process_noise 过程噪声协方差值
\retval none
*/
void setProcessNoise(T process_noise) { Q = process_noise; }
/*!
\brief 设置测量噪声协方差
\param[in] measurement_noise 测量噪声协方差值
\retval none
*/
void setMeasurementNoise(T measurement_noise) { R = measurement_noise; }
};
/*! /*!
\brief 电流卡尔曼滤波器类 \brief 电流卡尔曼滤波器类
\note 基于电机模型的卡尔曼滤波器实现,用于电流状态估计 \note 基于电机模型的卡尔曼滤波器实现,用于电流状态估计
@@ -45,10 +131,7 @@ float medium_filter(float values[], u8 size);
*/ */
class CurrentKalman { class CurrentKalman {
private: private:
float x; // 电流状态估计 KalmanFilter<float> kalman;
float P; // 估计误差协方差
float Q; // 过程噪声协方差
float R; // 测量噪声协方差
float L; // 电机电感(H) float L; // 电机电感(H)
float R_m; // 电机电阻(Ω) float R_m; // 电机电阻(Ω)
float T; // 控制周期(s) float T; // 控制周期(s)
@@ -66,6 +149,28 @@ class CurrentKalman {
void setMeasurementNoise(float r); void setMeasurementNoise(float r);
}; };
/*!
\brief 编码器速度卡尔曼滤波器类
\note 用于滤除编码器速度测量噪声的卡尔曼滤波器实现
*/
class EncoderVelocityKalman {
private:
KalmanFilter<float> kalman;
public:
EncoderVelocityKalman(float initial_velocity,
float initial_error_covariance, float process_noise,
float measurement_noise);
float update(float measured_velocity);
float getVelocity() const;
void setProcessNoise(float q);
void setMeasurementNoise(float r);
};
#endif // __cplusplus #endif // __cplusplus
#endif // _FILTER_H #endif // _FILTER_H
+26 -12
View File
@@ -1,18 +1,17 @@
#include "pid.h" #include "pid.h"
#include "Timer.h" #include "Timer.h"
#define _constrain(amt,low,high) ((amt)<(low)?(low):((amt)>(high)?(high):(amt))) #define _constrain(amt, low, high) \
((amt) < (low) ? (low) : ((amt) > (high) ? (high) : (amt)))
#include "Can.h"
extern CAN_transmiter CAN0_transmiter;
PIDController::PIDController(float P, float I, float D, float ramp, float limit) PIDController::PIDController(float P, float I, float D, float ramp, float limit)
: P(P) : P(P), I(I), D(D), output_ramp(ramp) // PID控制器加速度限幅
, I(I) ,
, D(D) limit(limit) // PID控制器输出限幅
, output_ramp(ramp) // PID控制器加速度限幅 ,
, 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 = get_system_runtime_us(); timestamp_prev = get_system_runtime_us();
} }
@@ -21,7 +20,8 @@ float PIDController::operator() (float error){
// 计算两次循环中间的间隔时间 // 计算两次循环中间的间隔时间
unsigned long timestamp_now = get_system_runtime_us(); unsigned long timestamp_now = get_system_runtime_us();
float Ts = (timestamp_now - timestamp_prev) * 1e-6f; float Ts = (timestamp_now - timestamp_prev) * 1e-6f;
if(Ts <= 0 || Ts > 0.5f) Ts = 1e-3f; if (Ts <= 0 || Ts > 0.5f)
Ts = 1e-3f;
// P环 // P环
float proportional = P * error; float proportional = P * error;
@@ -30,7 +30,6 @@ float PIDController::operator() (float error){
integral = _constrain(integral, -limit, limit); integral = _constrain(integral, -limit, limit);
// D环(微分环节) // D环(微分环节)
float derivative = D * (error - error_prev) / Ts; float derivative = D * (error - error_prev) / Ts;
// 将P,I,D三环的计算值加起来 // 将P,I,D三环的计算值加起来
float output = proportional + integral + derivative; float output = proportional + integral + derivative;
output = _constrain(output, -limit, limit); output = _constrain(output, -limit, limit);
@@ -48,5 +47,20 @@ float PIDController::operator() (float error){
output_prev = output; output_prev = output;
error_prev = error; error_prev = error;
timestamp_prev = timestamp_now; timestamp_prev = timestamp_now;
return output; return output;
} }
/**
* @brief 设置PID参数
*
* @param P: P参数
* @param I: I参数
* @param D: D参数
* @return void
*/
void PIDController::set_PID(float P, float I, float D) {
P = P;
I = I;
D = D;
}
+8 -3
View File
@@ -1,5 +1,6 @@
#include "Can.h" #include "Can.h"
#include "DengFOC.h" #include "DengFOC.h"
#include "Filter.h"
#include "adc.h" #include "adc.h"
#include "ang_sensor.h" #include "ang_sensor.h"
#include "gd32c10x.h" #include "gd32c10x.h"
@@ -23,6 +24,7 @@ extern CAN_transmiter CAN0_transmiter;
extern FOC_Controlroller FOC; extern FOC_Controlroller FOC;
extern sampler sampler; extern sampler sampler;
extern angle_sensor KTH7823; extern angle_sensor KTH7823;
extern EncoderVelocityKalman Vel_kalman;
// 添加DMA相关变量 // 添加DMA相关变量
dma_parameter_struct dma_rx_parameter; dma_parameter_struct dma_rx_parameter;
@@ -431,7 +433,8 @@ void CAN_transmiter::update(void) {
motor_temp = sampler.get_drv_temp() * 100; motor_temp = sampler.get_drv_temp() * 100;
Power_Voltage = sampler.get_vbus_voltage() * 1000; Power_Voltage = sampler.get_vbus_voltage() * 1000;
rt_angle_union.f = KTH7823.getAngle(); rt_angle_union.f = KTH7823.getAngle();
rt_velocity_union.f = KTH7823.getVelocity(); // rt_velocity_union.f = KTH7823.getVelocity();
rt_velocity_union.f = FOC.rt_velocity;
Status_code = (gpio_input_bit_get(GPIOB, GPIO_PIN_2) == SET) ? 0 : 1; Status_code = (gpio_input_bit_get(GPIOB, GPIO_PIN_2) == SET) ? 0 : 1;
Target_Control_Mode = FOC.control_mode; Target_Control_Mode = FOC.control_mode;
@@ -440,6 +443,7 @@ void CAN_transmiter::update(void) {
u_current_union.f = sampler.get_current('U') * 1000; u_current_union.f = sampler.get_current('U') * 1000;
w_current_union.f = sampler.get_current('W') * 1000; w_current_union.f = sampler.get_current('W') * 1000;
v_current_union.f = sampler.get_current('V') * 1000; v_current_union.f = sampler.get_current('V') * 1000;
// testfloat_union.f = KTH7823.getVelocity();
} }
/*! /*!
@@ -621,7 +625,8 @@ u8 CAN_transmiter::CANFD_all_Send() {
pack_u16_to_bytes(transmit_data, 11, Power_Voltage); pack_u16_to_bytes(transmit_data, 11, Power_Voltage);
pack_float_to_bytes(transmit_data, 13, rt_angle_union); pack_float_to_bytes(transmit_data, 13, rt_angle_union);
pack_float_to_bytes(transmit_data, 17, rt_velocity_union); pack_float_to_bytes(transmit_data, 17, rt_velocity_union);
success_flag += CANFD_Send(STATUS_ID, 24, transmit_data); pack_float_to_bytes(transmit_data, 21, testfloat_union);
success_flag += CANFD_Send(STATUS_ID, 32, transmit_data);
// 打包config数据 // 打包config数据
transmit_data[0] = controller_Mode; transmit_data[0] = controller_Mode;
@@ -677,7 +682,7 @@ void CAN_transmiter::communication_check() {
target_velocity_union.f = target_velocity_union.f =
unpack_bytes_to_float(receive_message.rx_data, 11).f; unpack_bytes_to_float(receive_message.rx_data, 11).f;
FOC.target_velocity = target_velocity_union.f * ANGLE_FACTOR; FOC.target_velocity = target_velocity_union.f;
can0_receive_flag = RESET; can0_receive_flag = RESET;
} }
+1
View File
@@ -106,6 +106,7 @@ class CAN_transmiter {
can_receive_message_struct receive_message; // 接收消息结构体 can_receive_message_struct receive_message; // 接收消息结构体
FlagStatus can0_receive_flag; // CAN0接收标志 FlagStatus can0_receive_flag; // CAN0接收标志
FlagStatus can0_send_flag; // CAN0发送标志 FlagStatus can0_send_flag; // CAN0发送标志
float_union_t testfloat_union = {0}; // 测试用
void communication_check(); // 通信检查 void communication_check(); // 通信检查
}; };
+16 -5
View File
@@ -1,6 +1,7 @@
#include "Timer.h" #include "Timer.h"
#include "Can.h" #include "Can.h"
#include "DengFOC.h" #include "DengFOC.h"
#include "Filter.h"
#include "Timer.h" #include "Timer.h"
#include "adc.h" #include "adc.h"
#include "ang_sensor.h" #include "ang_sensor.h"
@@ -9,6 +10,7 @@
#include "gd32c10x_misc.h" #include "gd32c10x_misc.h"
#include "gd32c10x_rcu.h" #include "gd32c10x_rcu.h"
#include "gd32c10x_timer.h" #include "gd32c10x_timer.h"
#include <cstdio>
#include <stdbool.h> #include <stdbool.h>
#include <stdint.h> #include <stdint.h>
#include <stdio.h> #include <stdio.h>
@@ -35,6 +37,7 @@ extern FOC_Controlroller FOC;
// 声明外部采样器对象 // 声明外部采样器对象
extern sampler sampler; extern sampler sampler;
extern angle_sensor KTH7823; extern angle_sensor KTH7823;
extern EncoderVelocityKalman Vel_kalman;
/** /**
* @brief 设置引脚中断优先级 * @brief 设置引脚中断优先级
@@ -156,6 +159,7 @@ uint64_t get_system_runtime_us(void) { return system_runtime_us; }
* @return void * @return void
*/ */
void TIMER2_IRQHandler(void) { void TIMER2_IRQHandler(void) {
static u8 mode = 0;
// 检查更新中断标志并处理 // 检查更新中断标志并处理
if (timer_interrupt_flag_get(TIMER2, TIMER_INT_UP) != RESET) { if (timer_interrupt_flag_get(TIMER2, TIMER_INT_UP) != RESET) {
// 清除更新中断标志 // 清除更新中断标志
@@ -168,9 +172,15 @@ void TIMER2_IRQHandler(void) {
// 每100us执行一次的操作 // 每100us执行一次的操作
sampler.update_current(); // 更新电流采样值 sampler.update_current(); // 更新电流采样值
KTH7823.update(); // 更新角度传感器值 KTH7823.update(); // 更新角度传感器值
// FOC.velocity_open_loop(); // 速度开环控制 FOC.rt_velocity = Vel_kalman.update(KTH7823.getVelocity());
// FOC.velocity_control(FOC.target_velocity); // 速度闭环控制
FOC.angle_control(FOC.target_angle); if (FOC.control_mode == 1) {
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) {
FOC.velocity_open_loop(); // 速度开环控制
}
if (total_us100_counter >= 10) { if (total_us100_counter >= 10) {
// 每1ms执行的代码 // 每1ms执行的代码
@@ -178,7 +188,8 @@ void TIMER2_IRQHandler(void) {
// 设置CAN发送标志 // 设置CAN发送标志
CAN0_transmiter.can0_send_flag = SET; CAN0_transmiter.can0_send_flag = SET;
mode = FOC.control_mode;
// 过流检测
if (sampler.get_current('U') > 2000 || if (sampler.get_current('U') > 2000 ||
sampler.get_current('V') > 2000 || sampler.get_current('V') > 2000 ||
sampler.get_current('W') > 2000) { sampler.get_current('W') > 2000) {
@@ -202,7 +213,7 @@ void TIMER2_IRQHandler(void) {
if (ms10_counter >= 10) { if (ms10_counter >= 10) {
ms10_counter = 0; ms10_counter = 0;
// 可以添加每10ms执行的代码 // 可以添加每10ms执行的代码
FOC.update_power();
static u8 ms100_counter = 0; static u8 ms100_counter = 0;
ms100_counter++; ms100_counter++;
if (ms100_counter >= 10) { if (ms100_counter >= 10) {
+15 -8
View File
@@ -10,9 +10,14 @@
#define SPI_CS_DISABLE() gpio_bit_set(GPIOA, GPIO_PIN_15) #define SPI_CS_DISABLE() gpio_bit_set(GPIOA, GPIO_PIN_15)
constexpr float ANGLE_FACTOR = 1.0f / 65536.0f * 360.0f; constexpr float ANGLE_FACTOR = 1.0f / 65536.0f * 360.0f;
constexpr float RAD_FACTOR = 1.0f / 65536.0f * 2.0f * 3.14159265358979323846f;
constexpr u16 DEFAULT_COMMAND = 0x0000; constexpr u16 DEFAULT_COMMAND = 0x0000;
constexpr u16 FAULT_RECEIVE = 0xFFFF; constexpr u16 FAULT_RECEIVE = 0xFFFF;
constexpr u16 REDDUCTION_RATIO = 25; constexpr u16 REDDUCTION_RATIO = 25;
constexpr float VELOCITY_SCALE = 1e4f;
constexpr float ANGLE_WRAP_THRESHOLD = 270.0f;
constexpr float ANGLE_WRAP_VALUE = 360.0f;
constexpr int SIZE_FLOAT = sizeof(float);
// DMA传输完成标志 // DMA传输完成标志
volatile bool spi_dma_tx_complete = false; volatile bool spi_dma_tx_complete = false;
@@ -203,7 +208,7 @@ float angle_sensor::read_sensorAngle(void) {
SPI_CS_ENABLE(); SPI_CS_ENABLE();
// 使用DMA发送命令并接收数据 // 使用DMA发送命令并接收数据
if (spi_rw_half_word_dma(SPI0, DEFAULT_COMMAND, &u16data) == 0) { if (!spi_rw_half_word_dma(SPI0, DEFAULT_COMMAND, &u16data)) {
SPI_CS_DISABLE(); SPI_CS_DISABLE();
return u16data * ANGLE_FACTOR; return u16data * ANGLE_FACTOR;
} else { } else {
@@ -218,6 +223,7 @@ float angle_sensor::read_sensorAngle(void) {
* @return 累积角度值 * @return 累积角度值
*/ */
float angle_sensor::update(void) { float angle_sensor::update(void) {
float currentAngle = read_sensorAngle(); float currentAngle = read_sensorAngle();
if (m_firstUpdate) { if (m_firstUpdate) {
@@ -231,16 +237,16 @@ float angle_sensor::update(void) {
// 处理角度绕回情况(0度和360度之间的跳变) // 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 // 如果变化超过180度,说明发生了绕回
if (delta > 270.0f) { if (delta > ANGLE_WRAP_THRESHOLD) {
// 从接近360度绕回到接近0度 // 从接近360度绕回到接近0度
delta -= 360.0f; delta -= ANGLE_WRAP_VALUE;
} else if (delta < -270.0f) { } else if (delta < -ANGLE_WRAP_THRESHOLD) {
// 从接近0度绕到接近360度 // 从接近0度绕到接近360度
delta += 360.0f; delta += ANGLE_WRAP_VALUE;
} }
std::memmove(velocity, velocity + 1, VEL_FILTER_SIZE * sizeof(float)); std::memmove(velocity, velocity + 1, SIZE_FLOAT * (VEL_FILTER_SIZE - 1));
velocity[VEL_FILTER_SIZE - 1] = delta * 1e4; velocity[VEL_FILTER_SIZE - 1] = delta * VELOCITY_SCALE;
m_cumulativeAngle += delta; m_cumulativeAngle += delta;
m_lastAngle = currentAngle; m_lastAngle = currentAngle;
@@ -279,7 +285,8 @@ float angle_sensor::getRawVelocity(void) const {
for (int i = 0; i < VEL_FILTER_SIZE - 1; i++) { for (int i = 0; i < VEL_FILTER_SIZE - 1; i++) {
velocity_filted += velocity[i]; velocity_filted += velocity[i];
} }
return velocity_filted / VEL_FILTER_SIZE; return velocity_filted / (VEL_FILTER_SIZE - 1);
// return velocity[VEL_FILTER_SIZE - 1];
} }
/** /**
+1 -1
View File
@@ -11,7 +11,7 @@ u16 spi_rw_half_word(u32 spi_periph, const u16 i_HalfWord);
int spi_rw_half_word_dma(uint32_t spi_periph, uint16_t tx_data, int spi_rw_half_word_dma(uint32_t spi_periph, uint16_t tx_data,
uint16_t *rx_data); uint16_t *rx_data);
constexpr u16 VEL_FILTER_SIZE = 24; constexpr u16 VEL_FILTER_SIZE = 3;
class angle_sensor { class angle_sensor {
public: public:
-1
View File
@@ -7,7 +7,6 @@
#include "core_cm4.h" #include "core_cm4.h"
#include "initial.h" #include "initial.h"
#include "systick.h" #include "systick.h"
#include <cstdio>
// 全局变量定义 // 全局变量定义
CAN_transmiter CAN0_transmiter; // CAN初始化 CAN_transmiter CAN0_transmiter; // CAN初始化
+1
View File
@@ -8,6 +8,7 @@ public:
~PIDController() = default; ~PIDController() = default;
float operator() (float error); float operator() (float error);
void set_PID(float P, float I, float D);
float P; //!< 比例增益(P环增益) float P; //!< 比例增益(P环增益)
float I; //!< 积分增益(I环增益) float I; //!< 积分增益(I环增益)