This commit is contained in:
cbb
2026-03-09 01:47:30 +08:00
8 changed files with 359 additions and 171 deletions
+233
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@@ -25,6 +25,7 @@ extern CurrentKalman Current_kalman;
#define constrain(value, min, max, target_min, target_max) \
((value - min) / (max - min) * (target_max - target_min))
<<<<<<< HEAD
// 校准步骤(代码模板)
void calibrate_zero_position(void) {
// Set_3Pwm(.25, 0, 0); // 起劲
@@ -49,14 +50,23 @@ void calibrate_zero_position(void) {
// Set_3Pwm(0, 0, 0); // 停止
}
=======
>>>>>>> c9934849c58e5b5daedd91d8bfde3d56aa02f83f
// 通过Ia,Ib,Ic计算Iq,Id(目前仅输出Iq)
inline float FOC_Controller::cal_Iq_Id(float current_a, float current_b,
float current_c) {
// 计算电气角度
<<<<<<< HEAD
float angle_el = fmod(shaft_angle * PP - KTH7823.calibration_angle, 360.0f);
=======
float angle_el = fmod(shaft_angle * PP, 360.0f);
>>>>>>> c9934849c58e5b5daedd91d8bfde3d56aa02f83f
// Clarke变换 (使用三相电流)
<<<<<<< HEAD
float I_alpha, I_beta;
=======
>>>>>>> c9934849c58e5b5daedd91d8bfde3d56aa02f83f
I_alpha = (2.0f / 3.0f) * current_a - (1.0f / 3.0f) * current_b -
(1.0f / 3.0f) * current_c;
I_beta = _1_SQRT3 * current_b - _1_SQRT3 * current_c;
@@ -66,11 +76,17 @@ inline float FOC_Controller::cal_Iq_Id(float current_a, float current_b,
arm_sin_cos_f32(angle_el, &sin_el, &cos_el);
float I_q, I_d;
I_q = I_beta * cos_el - I_alpha * sin_el;
<<<<<<< HEAD
I_d = I_beta * sin_el + I_alpha * cos_el;
// 返回Iq值,乘以1000以转换为mA
return Current_kalman.update(I_q * 1000 - KE_FACTOR * rt_velocity);
// return I_q * 1000 - KE_FACTOR * rt_velocity;
=======
return I_q * 1000.0f -
KE_FACTOR * rt_velocity; // 返回Iq值,乘以1000以转换为mA
>>>>>>> c9934849c58e5b5daedd91d8bfde3d56aa02f83f
}
/**
@@ -80,6 +96,7 @@ inline float FOC_Controller::cal_Iq_Id(float current_a, float current_b,
*/
u8 FOC_Controller::init() {
motor_init(); // 电机驱动初始化
<<<<<<< HEAD
FOC.cur_loop_p = DEFAULT_current_loop_p * 100 / limit_voltage;
FOC.cur_MIT_p = DEFAULT_current_MIT_p * 100 / limit_voltage;
@@ -89,7 +106,22 @@ u8 FOC_Controller::init() {
FOC.ang_loop_p = DEFAULT_angle_loop_p * 100 / limit_voltage;
FOC.ang_angloop_p = DEFAULT_angle_angloop_p * 100 / limit_voltage;
FOC.ang_MIT_p = DEFAULT_angle_MIT_p * 100 / limit_voltage;
=======
vel_loop.set_PID(DEFAULT_vel_loop_p * 100 / voltage_power_supply, vel_loop_Ki,
vel_loop_Kd); // 设置电机速度控制参数
angle_loop.set_PID(DEFAULT_angle_loop_p * 100 / voltage_power_supply, 100.0f,
0.2f); // 设置电机角度控制参数
current_loop.set_PID(DEFAULT_current_loop_p * 100 / voltage_power_supply, 5e-7f,
7e-8); // 设置电机电流控制参数
vel_inVelAngloop.set_PID(DEFAULT_vel_angloop_p * 100, vel_angloop_Ki,
vel_angloop_Kd); // 设置电机速度控制参数
ang_inVelAngloop.set_PID(DEFAULT_ang_angloop_p * 100 / voltage_power_supply,
ang_angloop_Ki,
ang_angloop_Kd); // 设置电机角度控制参数
>>>>>>> c9934849c58e5b5daedd91d8bfde3d56aa02f83f
CAN0_transmiter.testfloat_union.f = DEFAULT_ang_angloop_p * 100 / voltage_power_supply;
return 0;
}
@@ -140,6 +172,107 @@ inline void FOC_Controller::setPhaseVoltage(float Uq, float Ud) {
duty_b = Ub / voltage_power_supply * voltage_exchange;
duty_c = Uc / voltage_power_supply * voltage_exchange;
<<<<<<< HEAD
=======
Set_3Pwm(duty_a, duty_b, duty_c);
}
/**
* @brief 使用SVPWM算法设置电机输出(优化版)
*
* @param Uq: q轴电压
* @param Ud: d轴电压
*/
inline void FOC_Controller::setSVPWM_PhaseVoltage(float Uq, float Ud) {
// 计算电气角度(保持原有角度单位和范围)
float angle_el = fmod(shaft_angle * PP, 360.0f);
// 帕克逆变换
float sin_el, cos_el;
arm_sin_cos_f32(angle_el, &sin_el, &cos_el);
float Ualpha = Ud * cos_el - Uq * sin_el;
float Ubeta = Ud * sin_el + Uq * cos_el;
// 计算角度并归一化到 [0, 2π)
float angle = atan2f(Ubeta, Ualpha);
if (angle < 0)
angle += 2.0f * PI;
// 扇区与局部角度
int sector = (int)(angle * INV_PI_3) + 1;
if (sector < 1)
sector = 1;
else if (sector > 6)
sector = 6;
float local_angle = angle - (sector - 1) * PI_3;
// 模长计算
float magnitude = sqrtf(Ualpha * Ualpha + Ubeta * Ubeta);
// 计算电压调制比,同时限制最大输出电压
float modulation_index =
(magnitude / voltage_power_supply); // 90%作为安全裕量
// 电压限制
if (limit_voltage > voltage_power_supply) {
limit_voltage = voltage_power_supply;
}
float limit_percent = limit_voltage / v_safe;
if (modulation_index > limit_percent) {
// 限制电压
modulation_index = limit_percent;
// 同时相应地调整magnitude,保持电压矢量方向不变,根据调整后的调制比反推magnitude
magnitude = voltage_power_supply * limit_percent;
}
// 使用arm_sin_cos_f32计算local_angle的sin和cos
float sin_l, cos_l;
arm_sin_cos_f32(local_angle, &sin_l, &cos_l);
float T1 = modulation_index * (SQRT3DV2 * cos_l - COS_PI_3 * sin_l);
float T2 = modulation_index * sin_l;
float T0 = 1.0f - T1 - T2;
// 计算占空比(按规范化时间映射)
switch (sector) {
case 1:
duty_a = 0.5f * T0 + T1 + T2;
duty_b = 0.5f * T0 + T2;
duty_c = 0.5f * T0;
break;
case 2:
duty_a = 0.5f * T0 + T1;
duty_b = 0.5f * T0 + T1 + T2;
duty_c = 0.5f * T0;
break;
case 3:
duty_a = 0.5f * T0;
duty_b = 0.5f * T0 + T1 + T2;
duty_c = 0.5f * T0 + T2;
break;
case 4:
duty_a = 0.5f * T0;
duty_b = 0.5f * T0 + T1;
duty_c = 0.5f * T0 + T1 + T2;
break;
case 5:
duty_a = 0.5f * T0 + T2;
duty_b = 0.5f * T0;
duty_c = 0.5f * T0 + T1 + T2;
break;
case 6:
duty_a = 0.5f * T0 + T1 + T2;
duty_b = 0.5f * T0;
duty_c = 0.5f * T0 + T1;
break;
default:
duty_a = 0.0f;
duty_b = 0.0f;
duty_c = 0.0f;
break;
}
// 设置PWM输出
>>>>>>> c9934849c58e5b5daedd91d8bfde3d56aa02f83f
Set_3Pwm(duty_a, duty_b, duty_c);
}
@@ -249,7 +382,11 @@ inline void FOC_Controller::setSVPWM_PhaseVoltage(float Uq, float Ud) {
*
*/
void FOC_Controller::shut_down() {
<<<<<<< HEAD
drv_stop();
=======
is_shut_down = 1;
>>>>>>> c9934849c58e5b5daedd91d8bfde3d56aa02f83f
motor_sleep();
is_shut_down = true;
}
@@ -313,7 +450,11 @@ void FOC_Controller::update_power(float voltage) {
voltage_error = false;
voltage_power_supply = voltage;
v_half = voltage * 0.5f;
<<<<<<< HEAD
v_safe = voltage * 1.1f;
=======
v_safe = voltage * 1.05f;
>>>>>>> c9934849c58e5b5daedd91d8bfde3d56aa02f83f
} else {
voltage_error = true;
}
@@ -328,6 +469,7 @@ void FOC_Controller::update_power(float voltage) {
float FOC_Controller::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
shaft_angle = fmod(shaft_angle + target_velocity * REDUCTION_RATIO * 1.0 /
<<<<<<< HEAD
MOTOR_FREQUENCY / 2,
360.0f);
// 获取电机轴角度
@@ -339,6 +481,19 @@ float FOC_Controller::velocity_open_loop() {
// 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;
setSVPWM_PhaseVoltage(Uq, 0.0f);
=======
TIMER2_FREQUENCY,
360.0f);
// 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;
setSVPWM_PhaseVoltage(Uq, 0.0f);
// CAN0_transmiter.testfloat_union.f = Uq;
// cal_Iq_Id(sampler.get_current('U'), sampler.get_current('V'),
// sampler.get_current('W'));
>>>>>>> c9934849c58e5b5daedd91d8bfde3d56aa02f83f
return limit_voltage;
}
@@ -358,6 +513,84 @@ float FOC_Controller::angle_control() {
sampler.get_current('W'));
// 设置相电压
setSVPWM_PhaseVoltage(Uq, 0.0f);
<<<<<<< HEAD
=======
return shaft_angle;
}
/**
* @brief 带速度限制的角度闭环控制
*
* @param target_angle: 目标角度
* @param max_velocity: 最大速度限制 (单位: rad/s)
* @return float: 当前角度
*/
float FOC_Controller::angle_control_with_velocity_limit() {
// 计算角度误差
float angle_error = target_angle - rt_angle;
// 使用角度PID控制器计算目标速度
float target_velocity = ang_inVelAngloop(angle_error);
// 使用速度PID控制器计算最终输出电压
// 根据目标速度大小,选择不同的PID参数
if (target_velocity < -120.0f) {
vel_inVelAngloop.set_P(vel_angloop_p * 2.0f);
} else if (target_velocity < -30.0f) {
vel_inVelAngloop.set_P(vel_angloop_p * 1.5f);
} else {
vel_inVelAngloop.set_P(vel_angloop_p);
}
float Uq = vel_inVelAngloop(rt_velocity - target_velocity);
rt_current = cal_Iq_Id(sampler.get_current('U'), sampler.get_current('V'),
sampler.get_current('W'));
// 获取电机轴角度
shaft_angle = KTH7823.getcurrent_sensorangle();
// 设置相电压
setSVPWM_PhaseVoltage(Uq, 0.0f);
return shaft_angle;
}
/**
* @brief 带速度限制的角度闭环控制
*
* @param target_angle: 目标角度
* @param max_velocity: 最大速度限制 (单位: rad/s)
* @return float: 当前角度
*/
float FOC_Controller::MIT_Mode() {
// 第一层:角度环(外环)
// 根据目标角度和实际角度的差值,通过角度环PID控制器计算目标速度
float angle_error = rt_angle - target_angle;
float target_velocity =
ang_inVelAngloop(angle_error); // 使用angle_loop作为角度到速度的映射
// 第二层:速度环(中环)
// 根据目标速度和实际速度的差值,通过速度环PID控制器计算目标电流
float velocity_error = target_velocity - rt_velocity;
float target_current =
vel_inVelAngloop(velocity_error); // 使用vel_loop作为速度到电流的映射
CAN0_transmiter.testfloat_union.f = target_current;
// 第三层:电流环(内环)
// 计算当前实际电流
rt_current = cal_Iq_Id(sampler.get_current('U'), sampler.get_current('V'),
sampler.get_current('W'));
// 通过电流环PID控制器计算输出电压
float current_error = target_current - rt_current;
float Uq = current_loop(current_error);
// 获取电机轴角度
shaft_angle = KTH7823.getcurrent_sensorangle();
// 设置相电压
setSVPWM_PhaseVoltage(Uq, 0.0f);
>>>>>>> c9934849c58e5b5daedd91d8bfde3d56aa02f83f
return shaft_angle;
}