stm32f1无刷电机的bldc驱动程序
时间: 2023-10-14 11:05:48 浏览: 418
以下是一个简单的stm32f1无刷电机的BLDC驱动程序:
```
#include "stm32f10x.h"
#define A_H GPIO_Pin_0
#define A_L GPIO_Pin_1
#define B_H GPIO_Pin_2
#define B_L GPIO_Pin_3
#define C_H GPIO_Pin_4
#define C_L GPIO_Pin_5
#define TIM_PERIOD 1000
uint16_t pwm_duty = 0;
void TIM2_IRQHandler(void)
{
if (TIM_GetITStatus(TIM2, TIM_IT_Update) != RESET)
{
TIM_ClearITPendingBit(TIM2, TIM_IT_Update);
if (pwm_duty < TIM_PERIOD)
{
pwm_duty++;
}
else
{
pwm_duty = 0;
}
if (pwm_duty < TIM_PERIOD / 3)
{
GPIO_SetBits(GPIOA, A_H);
GPIO_ResetBits(GPIOA, A_L);
GPIO_SetBits(GPIOB, B_H);
GPIO_ResetBits(GPIOB, B_L);
GPIO_SetBits(GPIOC, C_H);
GPIO_ResetBits(GPIOC, C_L);
}
else if (pwm_duty < TIM_PERIOD * 2 / 3)
{
GPIO_ResetBits(GPIOA, A_H);
GPIO_SetBits(GPIOA, A_L);
GPIO_SetBits(GPIOB, B_H);
GPIO_ResetBits(GPIOB, B_L);
GPIO_SetBits(GPIOC, C_H);
GPIO_ResetBits(GPIOC, C_L);
}
else
{
GPIO_ResetBits(GPIOA, A_H);
GPIO_SetBits(GPIOA, A_L);
GPIO_ResetBits(GPIOB, B_H);
GPIO_SetBits(GPIOB, B_L);
GPIO_SetBits(GPIOC, C_H);
GPIO_ResetBits(GPIOC, C_L);
}
}
}
int main(void)
{
// 初始化GPIO口
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB | RCC_APB2Periph_GPIOC, ENABLE);
GPIO_InitStructure.GPIO_Pin = A_H | A_L;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = B_H | B_L;
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = C_H | C_L;
GPIO_Init(GPIOC, &GPIO_InitStructure);
// 初始化定时器
TIM_TimeBaseInitTypeDef TIM_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
TIM_InitStructure.TIM_Period = TIM_PERIOD - 1;
TIM_InitStructure.TIM_Prescaler = 72 - 1;
TIM_InitStructure.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_InitStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM2, &TIM_InitStructure);
TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE);
TIM_Cmd(TIM2, ENABLE);
NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
while (1)
{
}
}
```
该程序使用TIM2定时器的中断来控制电机的三相电流输出。在中断处理函数中,使用PWM占空比来控制电机转速。具体来说,当PWM的占空比小于1/3时,A相为正,B相为正,C相为正;当PWM的占空比在1/3和2/3之间时,A相为负,B相为正,C相为正;当PWM的占空比大于2/3时,A相为负,B相为正,C相为负。根据BLDC电机的工作原理,这些输出组合将导致电机的转子按照正确的方向旋转。
需要注意的是,该程序仅提供了非常基本的电机控制方法,并且没有实现任何保护机制。在实际应用中,还需要考虑电机过流、过热等问题,并相应地实现保护机制。
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