stm32f103输出6个开 /关交替的PWM波通过自举电路驱动无刷直流电机
时间: 2023-07-16 14:13:05 浏览: 60
要实现这个功能,你需要使用STM32F103的定时器模块来生成PWM波,并使用自举电路来驱动无刷直流电机。
以下是实现步骤:
1. 初始化定时器模块:选择需要使用的定时器模块,设置定时器的时钟频率,设定计数器的初始值和比较值。
2. 配置PWM输出通道:选择需要使用的PWM输出通道,设定占空比和极性等参数。
3. 启动定时器:开启定时器的时钟使能,启动定时器。
4. 配置自举电路:将PWM输出引脚连到自举电路的控制引脚,设置自举电路的参数。
5. 启动电机:将自举电路的输出引脚连接到无刷直流电机的驱动引脚上,启动电机。
6. 循环输出PWM波:在主循环中通过修改比较值来改变占空比,从而实现PWM波的输出。
7. 交替输出PWM波:通过改变比较值的大小和顺序,让不同的PWM输出通道交替输出PWM波,从而实现开关交替的效果。
需要注意的是,在使用自举电路驱动无刷直流电机时,需要特别注意自举电路的工作原理和参数设置,以避免电机出现异常情况。另外,还需要根据具体的电机参数和应用场景来选择合适的PWM输出频率和占空比,以达到最佳的驱动效果。
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stm32f103输出6个开 /关交替的PWM波通过自举电路驱动无刷直流电机,代码
以下是一个简单的示例代码,用于在STM32F103上驱动6个PWM信号以控制无刷直流电机:
```c
#include "stm32f10x.h"
#include "stm32f10x_tim.h"
#include "stm32f10x_gpio.h"
#include "stm32f10x_rcc.h"
int main(void)
{
// 初始化GPIO引脚
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO, ENABLE);
// 配置PWM输出引脚
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);
// 初始化定时器
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1 | RCC_APB2Periph_TIM8, ENABLE);
// 配置定时器3作为PWM输出
TIM_TimeBaseStructure.TIM_Period = 999;
TIM_TimeBaseStructure.TIM_Prescaler = 71;
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = 500;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OC1Init(TIM3, &TIM_OCInitStructure);
TIM_OC2Init(TIM3, &TIM_OCInitStructure);
TIM_OC3Init(TIM3, &TIM_OCInitStructure);
TIM_OC4Init(TIM3, &TIM_OCInitStructure);
// 配置定时器1和8作为自举电路
TIM_TimeBaseStructure.TIM_Period = 999;
TIM_TimeBaseStructure.TIM_Prescaler = 71;
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);
TIM_TimeBaseInit(TIM8, &TIM_TimeBaseStructure);
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = 500;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OC1Init(TIM1, &TIM_OCInitStructure);
TIM_OC2Init(TIM1, &TIM_OCInitStructure);
TIM_OC3Init(TIM1, &TIM_OCInitStructure);
TIM_OC4Init(TIM1, &TIM_OCInitStructure);
TIM_OC1Init(TIM8, &TIM_OCInitStructure);
TIM_OC2Init(TIM8, &TIM_OCInitStructure);
TIM_OC3Init(TIM8, &TIM_OCInitStructure);
TIM_OC4Init(TIM8, &TIM_OCInitStructure);
// 启动定时器
TIM_Cmd(TIM3, ENABLE);
TIM_Cmd(TIM1, ENABLE);
TIM_Cmd(TIM8, ENABLE);
while (1)
{
TIM_SetCompare1(TIM1, 500);
TIM_SetCompare2(TIM8, 0);
TIM_SetCompare3(TIM8, 500);
TIM_SetCompare4(TIM8, 0);
TIM_SetCompare1(TIM3, 0);
TIM_SetCompare2(TIM3, 500);
TIM_SetCompare3(TIM3, 0);
TIM_SetCompare4(TIM3, 500);
Delay(1000);
TIM_SetCompare1(TIM1, 0);
TIM_SetCompare2(TIM8, 500);
TIM_SetCompare3(TIM8, 0);
TIM_SetCompare4(TIM8, 500);
TIM_SetCompare1(TIM3, 500);
TIM_SetCompare2(TIM3, 0);
TIM_SetCompare3(TIM3, 500);
TIM_SetCompare4(TIM3, 0);
Delay(1000);
}
}
// 简单的延时函数
void Delay(__IO uint32_t nCount)
{
for (; nCount != 0; nCount--);
}
```
该代码将使用定时器1、8和3来生成6个PWM信号,分别连接到无刷直流电机的6个引脚上。在while循环中,交替设置PWM信号的占空比以控制电机的转速。在实际应用中需要根据具体的电机参数进行调整。
stm32f103c8t6pwm控制无刷直流电机
使用STM32F103C8T6可以通过输出PWM信号来控制无刷直流电机。下面是一个简单的步骤:
1. 首先,需要配置STM32F103C8T6的定时器,以便产生PWM信号。可以使用STM32CubeMX来生成代码并配置定时器。
2. 然后,需要编写代码来设置PWM的占空比和频率。可以使用HAL库中的函数来设置占空比和频率。
3. 接下来,需要将PWM信号输出到无刷直流电机的控制器上。可以使用MOSFET或者电调等设备来实现。
4. 最后,可以通过改变PWM信号的占空比来控制无刷直流电机的转速和方向。
下面是一个简单的示例代码,用于控制一个无刷直流电机:
```c
#include "stm32f1xx_hal.h"
TIM_HandleTypeDef htim2;
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_TIM2_Init(void);
int main(void)
{
HAL_Init();
SystemClock_Config();
MX_GPIO_Init();
MX_TIM2_Init();
HAL_TIM_PWM_Start(&htim2, TIM_CHANNEL_1);
while (1)
{
__HAL_TIM_SET_COMPARE(&htim2, TIM_CHANNEL_1, 500); // 设置PWM占空比为50%
HAL_Delay(1000);
__HAL_TIM_SET_COMPARE(&htim2, TIM_CHANNEL_1, 1000); // 设置PWM占空比为100%
HAL_Delay(1000);
}
}
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_SYSCLK
| RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
{
Error_Handler();
}
}
static void MX_TIM2_Init(void)
{
TIM_MasterConfigTypeDef sMasterConfig = {0};
TIM_OC_InitTypeDef sConfigOC = {0};
htim2.Instance = TIM2;
htim2.Init.Prescaler = 72 - 1;
htim2.Init.CounterMode = TIM_COUNTERMODE_UP;
htim2.Init.Period = 1000;
htim2.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
if (HAL_TIM_PWM_Init(&htim2) != HAL_OK)
{
Error_Handler();
}
sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
if (HAL_TIMEx_MasterConfigSynchronization(&htim2, &sMasterConfig) != HAL_OK)
{
Error_Handler();
}
sConfigOC.OCMode = TIM_OCMODE_PWM1;
sConfigOC.Pulse = 0;
sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
if (HAL_TIM_PWM_ConfigChannel(&htim2, &sConfigOC, TIM_CHANNEL_1) != HAL_OK)
{
Error_Handler();
}
}
static void MX_GPIO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
__HAL_RCC_GPIOA_CLK_ENABLE();
GPIO_InitStruct.Pin = GPIO_PIN_0;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
}
```