feat(FOC): 重构FOC控制器实现并修复SVPWM算法支持
- 修复类名拼写错误:FOC_Controlroller -> FOC_Controller - 移除不必要的角度归一化函数,直接使用fmod优化性能 - 添加完整的SVPWM算法实现,提高电机控制效率 - 重构PID参数配置,使用动态参数调整机制 - 增加电流反馈功能,实时监测电机运行状态 - 优化电压安全限制,提高系统稳定性 - 更新控制模式映射,支持更多控制策略 - 改进CAN通信协议,增加电流反馈传输
This commit is contained in:
+217
-90
@@ -11,8 +11,7 @@
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#include <cmath>
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#include <gd32c10x.h>
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FOC_Controlroller FOC; // FOC控制初始化
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FOC_Controller FOC; // FOC控制初始化
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extern sampler sampler;
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extern angle_sensor KTH7823;
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extern CAN_transmiter CAN0_transmiter;
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@@ -24,27 +23,14 @@ extern EncoderVelocityKalman Vel_kalman; // 速度滤波
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#define constrain(value, min, max, target_min, target_max) \
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((value - min) / (max - min) * (target_max - target_min))
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/**@
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* @brief 归一化角度
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*
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* @param angle
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* @return float
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*/
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inline float _normalizeAngle(float angle) {
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float a = fmod(angle, 360.0f);
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// 取余运算可以用于归一化,列出特殊值例子算便知
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return a >= 0 ? a : (a + 360.0f);
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}
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// 通过Ia,Ib,Ic计算Iq,Id(目前仅输出Iq)
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inline float FOC_Controlroller::cal_Iq_Id(float current_a, float current_b,
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float current_c) {
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inline float FOC_Controller::cal_Iq_Id(float current_a, float current_b,
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float current_c) {
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// 计算电气角度
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float angle_el = _normalizeAngle(shaft_angle * PP);
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float angle_el = fmod(shaft_angle * PP, 360.0f);
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float I_alpha, I_beta;
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// Clarke变换 (使用三相电流)
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// arm_clarke_f32(current_a, current_b, &I_alpha, &I_beta);
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I_alpha = (2.0f / 3.0f) * current_a - (1.0f / 3.0f) * current_b -
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(1.0f / 3.0f) * current_c;
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I_beta = _1_SQRT3 * current_b - _1_SQRT3 * current_c;
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@@ -54,10 +40,9 @@ inline float FOC_Controlroller::cal_Iq_Id(float current_a, float current_b,
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arm_sin_cos_f32(angle_el, &sin_el, &cos_el);
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float I_q, I_d;
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I_q = I_beta * cos_el - I_alpha * sin_el;
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// arm_park_f32(I_alpha, I_beta, &I_d, &I_q, sin_el, cos_el);
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return I_q * 1000.0f -
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KE_FACTOR * rt_velocity; // 返回Iq值,乘以100以转换为mA
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KE_FACTOR * rt_velocity; // 返回Iq值,乘以1000以转换为mA
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}
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/**
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@@ -65,20 +50,22 @@ inline float FOC_Controlroller::cal_Iq_Id(float current_a, float current_b,
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*
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* @return u8 0表示初始化成功,1表示初始化失败
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*/
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u8 FOC_Controlroller::init() {
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motor_init(); // 电机驱动初始化
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vel_loop.set_PID(vel_loop_p * 100 / limit_voltage, 0.20f, 5e-5); // 设置电机速度控制参数
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angle_loop.set_PID(angle_loop_p * 100 / limit_voltage, 100.0f,
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u8 FOC_Controller::init() {
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motor_init(); // 电机驱动初始化
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vel_loop.set_PID(DEFAULT_vel_loop_p * 100 / voltage_power_supply, vel_loop_Ki,
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vel_loop_Kd); // 设置电机速度控制参数
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angle_loop.set_PID(DEFAULT_angle_loop_p * 100 / voltage_power_supply, 100.0f,
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0.2f); // 设置电机角度控制参数
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current_loop.set_PID(current_loop_p * 100 / limit_voltage, 5e-7f,
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current_loop.set_PID(DEFAULT_current_loop_p * 100 / voltage_power_supply, 5e-7f,
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7e-8); // 设置电机电流控制参数
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vel_inVelAngloop.set_PID(vel_angloop_p * 100 / limit_voltage, 3.0f,
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5e-4); // 设置电机速度控制参数
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ang_inVelAngloop.set_PID(ang_angloop_p * 100 / limit_voltage, 0.0f,
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5e-4); // 设置电机角度控制参数
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vel_inVelAngloop.set_PID(DEFAULT_vel_angloop_p * 100, vel_angloop_Ki,
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vel_angloop_Kd); // 设置电机速度控制参数
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ang_inVelAngloop.set_PID(DEFAULT_ang_angloop_p * 100 / voltage_power_supply,
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ang_angloop_Ki,
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ang_angloop_Kd); // 设置电机角度控制参数
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CAN0_transmiter.testfloat_union.f = DEFAULT_ang_angloop_p * 100 / voltage_power_supply;
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return 0;
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}
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@@ -86,18 +73,18 @@ u8 FOC_Controlroller::init() {
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* @brief 电机控制类构造函数
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*
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*/
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FOC_Controlroller::FOC_Controlroller() { ; }
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FOC_Controller::FOC_Controller() { ; }
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/**
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* @brief 设置电机输出,使用优化的SVPWM算法
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* @brief 设置电机输出
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*
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* @param Uq: q轴电压
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* @param Ud: d轴电压
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* @param angle_el: 电机轴角度
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*/
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inline void FOC_Controlroller::setPhaseVoltage(float Uq, float Ud) {
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inline void FOC_Controller::setPhaseVoltage(float Uq, float Ud) {
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// 计算电气角度
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float angle_el = _normalizeAngle(shaft_angle * PP);
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float angle_el = fmod(shaft_angle * PP, 360.0f);
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// 帕克逆变换 (直接计算,避免函数调用开销)
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float sin_el, cos_el;
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@@ -107,18 +94,126 @@ inline void FOC_Controlroller::setPhaseVoltage(float Uq, float Ud) {
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// 克拉克逆变换 (使用预计算常量优化)
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Ua = Ualpha + v_half;
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Ub = sqrt3dv2 * Ubeta - 0.5f * Ualpha + v_half;
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Uc = -0.5f * Ualpha - sqrt3dv2 * Ubeta + v_half;
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Ub = SQRT3DV2 * Ubeta - 0.5f * Ualpha + v_half;
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Uc = -0.5f * Ualpha - SQRT3DV2 * Ubeta + v_half;
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if (Ua > v_safe)
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Ua = v_safe;
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else if (Ua < -v_safe)
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Ua = -v_safe;
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if (Ub > v_safe)
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Ub = v_safe;
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else if (Ub < -v_safe)
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Ub = -v_safe;
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if (Uc > v_safe)
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Uc = v_safe;
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else if (Uc < -v_safe)
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Uc = -v_safe;
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// 计算占空比并限制范围
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duty_a = _constrain(Ua / v_safe, 0.0f, 1.0f);
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duty_b = _constrain(Ub / v_safe, 0.0f, 1.0f);
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duty_c = _constrain(Uc / v_safe, 0.0f, 1.0f);
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// 设置PWM输出
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float voltage_exchange = limit_voltage / v_safe;
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duty_a = duty_a * voltage_exchange;
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duty_b = duty_b * voltage_exchange;
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duty_c = duty_c * voltage_exchange;
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duty_a = Ua / voltage_power_supply * voltage_exchange;
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duty_b = Ub / voltage_power_supply * voltage_exchange;
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duty_c = Uc / voltage_power_supply * voltage_exchange;
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Set_3Pwm(duty_a, duty_b, duty_c);
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}
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/**
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* @brief 使用SVPWM算法设置电机输出(优化版)
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*
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* @param Uq: q轴电压
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* @param Ud: d轴电压
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*/
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inline void FOC_Controller::setSVPWM_PhaseVoltage(float Uq, float Ud) {
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// 计算电气角度(保持原有角度单位和范围)
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float angle_el = fmod(shaft_angle * PP, 360.0f);
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// 帕克逆变换
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float sin_el, cos_el;
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arm_sin_cos_f32(angle_el, &sin_el, &cos_el);
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float Ualpha = Ud * cos_el - Uq * sin_el;
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float Ubeta = Ud * sin_el + Uq * cos_el;
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// 计算角度并归一化到 [0, 2π)
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float angle = atan2f(Ubeta, Ualpha);
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if (angle < 0)
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angle += 2.0f * PI;
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// 扇区与局部角度
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int sector = (int)(angle * INV_PI_3) + 1;
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if (sector < 1)
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sector = 1;
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else if (sector > 6)
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sector = 6;
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float local_angle = angle - (sector - 1) * PI_3;
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// 模长计算
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float magnitude = sqrtf(Ualpha * Ualpha + Ubeta * Ubeta);
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// 计算电压调制比,同时限制最大输出电压
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float modulation_index =
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(magnitude / voltage_power_supply); // 90%作为安全裕量
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// 电压限制
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if (limit_voltage > voltage_power_supply) {
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limit_voltage = voltage_power_supply;
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}
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float limit_percent = limit_voltage / v_safe;
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if (modulation_index > limit_percent) {
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// 限制电压
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modulation_index = limit_percent;
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// 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
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magnitude = voltage_power_supply * limit_percent;
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}
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// 使用arm_sin_cos_f32计算local_angle的sin和cos
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float sin_l, cos_l;
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arm_sin_cos_f32(local_angle, &sin_l, &cos_l);
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float T1 = modulation_index * (SQRT3DV2 * cos_l - COS_PI_3 * sin_l);
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float T2 = modulation_index * sin_l;
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float T0 = 1.0f - T1 - T2;
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// 计算占空比(按规范化时间映射)
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switch (sector) {
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case 1:
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duty_a = 0.5f * T0 + T1 + T2;
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duty_b = 0.5f * T0 + T2;
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duty_c = 0.5f * T0;
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break;
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case 2:
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duty_a = 0.5f * T0 + T1;
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duty_b = 0.5f * T0 + T1 + T2;
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duty_c = 0.5f * T0;
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break;
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case 3:
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duty_a = 0.5f * T0;
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duty_b = 0.5f * T0 + T1 + T2;
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duty_c = 0.5f * T0 + T2;
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break;
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case 4:
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duty_a = 0.5f * T0;
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duty_b = 0.5f * T0 + T1;
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duty_c = 0.5f * T0 + T1 + T2;
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break;
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case 5:
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duty_a = 0.5f * T0 + T2;
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duty_b = 0.5f * T0;
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duty_c = 0.5f * T0 + T1 + T2;
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break;
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case 6:
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duty_a = 0.5f * T0 + T1 + T2;
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duty_b = 0.5f * T0;
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duty_c = 0.5f * T0 + T1;
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break;
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default:
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duty_a = 0.0f;
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duty_b = 0.0f;
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duty_c = 0.0f;
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break;
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}
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// 设置PWM输出
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Set_3Pwm(duty_a, duty_b, duty_c);
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}
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@@ -126,7 +221,7 @@ inline void FOC_Controlroller::setPhaseVoltage(float Uq, float Ud) {
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* @brief 电机关机
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*
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*/
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void FOC_Controlroller::shut_down() {
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void FOC_Controller::shut_down() {
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is_shut_down = 1;
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motor_sleep();
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}
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@@ -134,11 +229,11 @@ void FOC_Controlroller::shut_down() {
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* @brief 占空比置0
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*
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*/
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void FOC_Controlroller::drv_stop() { Set_3Pwm(0.0f, 0.0f, 0.0f); }
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void FOC_Controller::drv_stop() { Set_3Pwm(0.0f, 0.0f, 0.0f); }
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/**
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* @brief 电机锁止
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*/
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float FOC_Controlroller::drv_hold() {
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float FOC_Controller::drv_hold() {
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float hold_pwm_duty = HOLD_PWM_DUTY;
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if (HOLD_PWM_DUTY > 0.95f) {
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hold_pwm_duty = 0.95f;
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@@ -152,7 +247,7 @@ float FOC_Controlroller::drv_hold() {
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* @brief 电机恢复
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*
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*/
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void FOC_Controlroller::resume() {
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void FOC_Controller::resume() {
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over_current = false;
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voltage_error = false;
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is_shut_down = false;
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@@ -162,12 +257,12 @@ void FOC_Controlroller::resume() {
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* @brief 更新电源电压
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*
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*/
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void FOC_Controlroller::update_power(void) {
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voltage_power_supply = sampler.get_vbus_voltage();
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if (voltage_power_supply < 36.0f and voltage_power_supply > 8.0f) {
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void FOC_Controller::update_power(float voltage) {
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if (voltage < 36.0f and voltage > 8.0f) {
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voltage_error = false;
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v_half = voltage_power_supply * 0.5f;
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v_safe = voltage_power_supply * 0.95f;
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voltage_power_supply = voltage;
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v_half = voltage * 0.5f;
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v_safe = voltage * 1.05f;
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} else {
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voltage_error = true;
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}
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@@ -179,51 +274,39 @@ void FOC_Controlroller::update_power(void) {
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* @param target_velocity: 目标速度
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* @return float: q轴电压
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*/
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float FOC_Controlroller::velocity_open_loop() {
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float FOC_Controller::velocity_open_loop() {
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// 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
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shaft_angle = _normalizeAngle(shaft_angle + target_velocity * ANGLE_FACTOR *
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REDUCTION_RATIO * 1.0 /
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TIMER2_FREQUENCY);
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shaft_angle = fmod(shaft_angle + target_velocity * REDUCTION_RATIO * 1.0 /
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TIMER2_FREQUENCY,
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360.0f);
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// 因为在开环控制中,Ud始终为0,只控制Uq
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const float Uq = voltage_power_supply / 2.0f;
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setPhaseVoltage(Uq, 0.0f);
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CAN0_transmiter.testfloat_union.f = shaft_angle;
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setSVPWM_PhaseVoltage(Uq, 0.0f);
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// CAN0_transmiter.testfloat_union.f = Uq;
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// cal_Iq_Id(sampler.get_current('U'), sampler.get_current('V'),
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// sampler.get_current('W'));
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return limit_voltage;
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}
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/**
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* @brief 电机初始化
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*
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* @param _PP: 电机极队数
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*/
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// void FOC_Controlroller::DFOC_alignSensor(int _PP) {
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// u8 PP = _PP;
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// setPhaseVoltage(3, 0, _3PI_2);
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// delay_1ms(3000);
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// zero_electric_angle = _electricalAngle();
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// setPhaseVoltage(0, 0, _3PI_2);
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// std::printf("0电角度:%f", zero_electric_angle);
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// }
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/**
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* @brief 角度闭环控制
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*
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* @param target_angle: 目标角度
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* @return float: 当前角度
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*/
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float FOC_Controlroller::angle_control() {
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float FOC_Controller::angle_control() {
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// PID 控制计算
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float Uq = angle_loop(target_angle - rt_angle);
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// 获取电机轴角度
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shaft_angle = KTH7823.getcurrent_sensorangle();
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rt_current = cal_Iq_Id(sampler.get_current('U'), sampler.get_current('V'),
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sampler.get_current('W'));
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// 设置相电压
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setPhaseVoltage(Uq, 0.0f);
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setSVPWM_PhaseVoltage(Uq, 0.0f);
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return shaft_angle;
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}
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@@ -234,26 +317,70 @@ float FOC_Controlroller::angle_control() {
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* @param max_velocity: 最大速度限制 (单位: rad/s)
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* @return float: 当前角度
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*/
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float FOC_Controlroller::angle_control_with_velocity_limit() {
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float FOC_Controller::angle_control_with_velocity_limit() {
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// 计算角度误差
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float angle_error = target_angle - rt_angle;
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// 使用角度PID控制器计算目标速度
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float target_velocity = ang_inVelAngloop(angle_error);
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// 对目标速度进行限幅
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target_velocity =
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_constrain(target_velocity, -limit_velocity, limit_velocity);
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||||
// 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);
|
||||
CAN0_transmiter.testfloat_union.f = shaft_angle;
|
||||
|
||||
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
|
||||
setPhaseVoltage(Uq, 0.0f);
|
||||
setSVPWM_PhaseVoltage(Uq, 0.0f);
|
||||
|
||||
return shaft_angle;
|
||||
}
|
||||
@@ -264,30 +391,30 @@ float FOC_Controlroller::angle_control_with_velocity_limit() {
|
||||
* @param target_velocity: 目标速度
|
||||
* @return float: 当前速度
|
||||
*/
|
||||
float FOC_Controlroller::velocity_control() {
|
||||
float FOC_Controller::velocity_control() {
|
||||
// PID 控制计算
|
||||
float Uq = vel_loop((rt_velocity - target_velocity) * 25);
|
||||
|
||||
// 获取电机轴角度
|
||||
shaft_angle = KTH7823.getcurrent_sensorangle();
|
||||
// 设置相电压
|
||||
setPhaseVoltage(Uq, 0.0f);
|
||||
CAN0_transmiter.testfloat_union.f =
|
||||
cal_Iq_Id(sampler.get_current('U'), sampler.get_current('V'),
|
||||
sampler.get_current('W'));
|
||||
setSVPWM_PhaseVoltage(Uq, 0.0f);
|
||||
rt_current = cal_Iq_Id(sampler.get_current('U'), sampler.get_current('V'),
|
||||
sampler.get_current('W'));
|
||||
|
||||
return rt_velocity;
|
||||
}
|
||||
|
||||
float FOC_Controlroller::current_control() {
|
||||
float FOC_Controller::current_control() {
|
||||
// PID 控制计算
|
||||
float Iq = cal_Iq_Id(sampler.get_current('U'), sampler.get_current('V'),
|
||||
sampler.get_current('W'));
|
||||
float Iq = rt_current =
|
||||
cal_Iq_Id(sampler.get_current('U'), sampler.get_current('V'),
|
||||
sampler.get_current('W'));
|
||||
float Uq = current_loop(target_current - Iq);
|
||||
CAN0_transmiter.testfloat_union.f = Iq;
|
||||
// 获取电机轴角度
|
||||
shaft_angle = KTH7823.getcurrent_sensorangle();
|
||||
// 设置相电压
|
||||
setPhaseVoltage(Uq, 0.0f);
|
||||
setSVPWM_PhaseVoltage(Uq, 0.0f);
|
||||
return 1;
|
||||
}
|
||||
Reference in New Issue
Block a user