stm32控制电机电流采样问题

bluesky1234

stm32控制电机电流采样问题 [复制链接]

我用stm32F103vb控制同步电机进行电流采样，可以生成SVPWM波，也能采到A\B两相的电流，但总感觉电流采样值不是在PWM波的有效期间采样的，也就是说TIM1触发AD的采样时刻不是在PWM波的有效期间，想问一下各位大侠，怎么通过软件设置TIM1定时器的上溢或下溢？采样A\B相电流我用两路AD，采用的是同时注入模式，为的是保证同时采样（感觉TIM1触发AD的规则模式不能在SVPWM的有效期间采样，不知道对否），也请帮忙看一下这样设置正确吗？程序如下：

void imeas_Init(imeas *v)

{

  ADC_InitTypeDef ADC_InitStructure;

  GPIO_InitTypeDef GPIO_InitStructure;

  DMA_InitTypeDef DMA_InitStructure;

  

  //----------------------test-----------------------------------

  

  GPIO_InitStructure.GPIO_Pin = Test_PIN;

  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;  

  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;

  GPIO_Init(GPIOB, &GPIO_InitStructure);

  

  // adc1 & adc2 pins //////////////////////////////////////////////////////////

  GPIO_StructInit(&GPIO_InitStructure);

  // phase_A

  GPIO_InitStructure.GPIO_Pin = PHASE_A_GPIO_PIN;  

  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;

  GPIO_Init(PHASE_A_GPIO_PORT, &GPIO_InitStructure);  

  

  // phase_B

  GPIO_InitStructure.GPIO_Pin = PHASE_B_GPIO_PIN;  

  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;

  GPIO_Init(PHASE_B_GPIO_PORT, &GPIO_InitStructure);  

 

  

  // reset adc

  ADC_DeInit(PHASE_A_ADC); //开启PHASE_A_ADC

  ADC_DeInit(PHASE_B_ADC);

  

  // ENABLE adc

  ADC_Cmd(PHASE_A_ADC, ENABLE);

  ADC_Cmd(PHASE_B_ADC, ENABLE);

    

  // adc1&2 configuration  

  ADC_StructInit(&ADC_InitStructure);

  ADC_InitStructure.ADC_Mode =ADC_Mode_InjecSimult; 

  ADC_InitStructure.ADC_ScanConvMode = DISABLE;        

  ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;  

  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Left;

  ADC_InitStructure.ADC_NbrOfChannel = 1;              

   

 ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigInjecConv_T1_TRGO ;

  

  ADC_Init(PHASE_A_ADC, &ADC_InitStructure);

  ADC_Init(PHASE_B_ADC, &ADC_InitStructure);

  

 /* Set injected sequencer length */

  ADC_InjectedSequencerLengthConfig(ADC1, 1);

  ADC_InjectedSequencerLengthConfig(ADC2, 1);

  

  /* ADC1 injected channel configuration */ 

  ADC_InjectedChannelConfig(ADC1, PHASE_A_ADC_CHANNEL,1,ADC_SampleTime_55Cycles5);

  ADC_InjectedChannelConfig(ADC2, PHASE_B_ADC_CHANNEL,1,ADC_SampleTime_55Cycles5);

  

  /* ADC1 injected external trigger configuration */

  ADC_ExternalTrigInjectedConvConfig(ADC1, ADC_ExternalTrigInjecConv_T1_TRGO);

  ADC_ExternalTrigInjectedConvConfig(ADC2, ADC_ExternalTrigInjecConv_T1_TRGO);

  

  /* Enable ADC1 injected external trigger conversion */

  ADC_ExternalTrigInjectedConvCmd(ADC1, ENABLE);

  ADC_ExternalTrigInjectedConvCmd(ADC2, ENABLE);

  

   //ADC_SetInjectedOffset( PHASE_A_ADC, ADC_InjectedChannel_1,0x0 );

 // ADC_SetInjectedOffset( PHASE_B_ADC, ADC_InjectedChannel_2,0x0 );

  

  

  

  

  

  

  // clear pending flag

  ADC_ClearFlag(PHASE_A_ADC, ADC_FLAG_JEOC);

  ADC_ClearFlag(PHASE_B_ADC, ADC_FLAG_JEOC);

  

  

  // 禁止中断

  ADC_ITConfig(PHASE_A_ADC, ADC_IT_JEOC, ENABLE);

  ADC_ITConfig(PHASE_B_ADC, ADC_IT_JEOC, ENABLE);

  

  // 打开adc外部触发转换

  

   /* Enable ADC1 injected external trigger conversion */

  ADC_ExternalTrigInjectedConvCmd(PHASE_A_ADC, ENABLE);

  ADC_ExternalTrigInjectedConvCmd(PHASE_B_ADC, ENABLE);

  

  // enable adc

  ADC_Cmd(PHASE_A_ADC, ENABLE);

  ADC_Cmd(PHASE_B_ADC, ENABLE);

  

  //启动ADC1&ADC3自校准，th

  /* Enable ADC1 reset calibaration register */   

  ADC_ResetCalibration(PHASE_A_ADC);  //重置校准 

  /* Check the end of ADC1 reset calibration register */

  while(ADC_GetResetCalibrationStatus(PHASE_A_ADC)); //等待重置校准完成 

  /* Start ADC1 calibaration */

  ADC_StartCalibration(PHASE_A_ADC);

  /* Check the end of ADC1 calibration */

  while(ADC_GetCalibrationStatus(PHASE_A_ADC));

  

  /* Enable ADC3 reset calibaration register */  

  

  ADC_ResetCalibration(PHASE_B_ADC);

  while(ADC_GetResetCalibrationStatus(PHASE_B_ADC));

  ADC_StartCalibration(PHASE_B_ADC);

  while(ADC_GetCalibrationStatus(PHASE_B_ADC));

  

  

    GPIO_ResetBits(GPIOB, Test_PIN);

  

}
//--------------------------------------------------------------

void imeas_Calc(imeas *v)

{

  s16 dataQ15;  

  

  GPIO_SetBits(GPIOB, Test_PIN);

  

  

  while(!(ADC_GetFlagStatus(PHASE_A_ADC,ADC_FLAG_JEOC) & ADC_GetFlagStatus(PHASE_B_ADC,ADC_FLAG_JEOC))) 

  {

     flag1++;

   }

     flag2++;

  //Ia

  adc1_value_test = ADC_GetInjectedConversionValue(PHASE_A_ADC, ADC_InjectedChannel_1);

  adc1_value_test = adc1_value_test *2;

  dataQ15 = adc1_value_test^0x8000;

  v->ImeasA =  _IQ15toIQ(dataQ15);

  

  

  

  //Ib

  adc2_value_test = ADC_GetInjectedConversionValue(PHASE_B_ADC, ADC_InjectedChannel_1);

  adc2_value_test = adc2_value_test *2;

  dataQ15 = adc2_value_test^0x8000;

  v->ImeasB =  _IQ15toIQ(dataQ15);

  ADC_ClearFlag(PHASE_A_ADC, ADC_FLAG_JEOC);    

 

  ADC_ClearFlag(PHASE_B_ADC, ADC_FLAG_JEOC);
}
//------------------------------------------------------------------------------------------------------------------------------------------

void  tim_conf(void)

{

  // tim1

  //////////////////////////////////////////////////////////////////////////////

  

  TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;

  TIM_OCInitTypeDef TIM_OCInitStructure;

  TIM_BDTRInitTypeDef TIM_BDTRInitStructure;

  GPIO_InitTypeDef GPIO_InitStructure;

  GPIO_PinRemapConfig(GPIO_FullRemap_TIM1, ENABLE);

  

  TIM_DeInit(TIM1);

  

  // timebase  设置PWM频率

  

  TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);

  TIM_TimeBaseStructure.TIM_Prescaler = PWM_PRSC;  

  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_CenterAligned1;

  TIM_TimeBaseStructure.TIM_Period = T_PERIOD;   ///1800

  TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; 

  TIM_TimeBaseStructure.TIM_RepetitionCounter =REP_RATE;  //1

  TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);

  

    // OC1 设置1通道占空比

  TIM_OCStructInit(&TIM_OCInitStructure);

  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2;

  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;    // 输出使能

  TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;  // 输出使能

  TIM_OCInitStructure.TIM_Pulse = 0; // 脉冲宽度

  TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;     // 高电平有效

  TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;   // 高电平有效

  TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Reset;  // 空闲状态输出低电平

  TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset; // 空闲状态输出低电平

  TIM_OC1Init(TIM1, &TIM_OCInitStructure);

  TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable);

  

  // OC2

  TIM_OCInitStructure.TIM_Pulse = 0; //dummy value

  TIM_OC2Init(TIM1, &TIM_OCInitStructure);

  TIM_OC2PreloadConfig(TIM1, TIM_OCPreload_Enable);

  

  // OC3

  TIM_OCInitStructure.TIM_Pulse = 0; //dummy value  0

  TIM_OC3Init(TIM1, &TIM_OCInitStructure);

  TIM_OC3PreloadConfig(TIM1, TIM_OCPreload_Enable);

  

  

  GPIO_StructInit(&GPIO_InitStructure);

  //-->channel 1,2,3

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 |  GPIO_Pin_10 | GPIO_Pin_11 | GPIO_Pin_12 |  GPIO_Pin_13;

  GPIO_InitStructure.GPIO_Mode =  GPIO_Mode_AF_PP;  //推挽复用输出

  ///GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;

  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

  GPIO_Init(GPIOE, &GPIO_InitStructure);

   

  // BDTR

  

  TIM_BDTRStructInit(&TIM_BDTRInitStructure);

  TIM_BDTRInitStructure.TIM_OSSRState = TIM_OSSRState_Enable;

  TIM_BDTRInitStructure.TIM_OSSIState = TIM_OSSIState_Enable;

  TIM_BDTRInitStructure.TIM_LOCKLevel = TIM_LOCKLevel_1;

  TIM_BDTRInitStructure.TIM_DeadTime = DT_PERIOD; // 死区时间

  TIM_BDTRInitStructure.TIM_Break = TIM_Break_Disable; // 禁用刹车

  TIM_BDTRInitStructure.TIM_BreakPolarity = TIM_BreakPolarity_High;  // 刹车输入高电平有效

  TIM_BDTRInitStructure.TIM_AutomaticOutput = TIM_AutomaticOutput_Disable;

  TIM_BDTRConfig(TIM1, &TIM_BDTRInitStructure);

  

 

  

  TIM_ClearITPendingBit(TIM1, TIM_IT_Update); 

  TIM_ITConfig(TIM1, TIM_IT_Update, ENABLE); 

  

  TIM_SelectOutputTrigger(TIM1, TIM_TRGOSource_Update);

   pwmgen_parameter.PeriodMax = T_PERIOD;

   

}

被这折磨一周了，还没出来，请各位大侠帮忙看一下啊：怎么通过软件设置TIM1定时器的上溢或下溢？采样A\B相电流我用两路AD，采用的是同时注入模式，为的是保证同时采样（感觉TIM1触发AD的规则模式不能在SVPWM的有效期间采样，不知道对否），也请帮忙看一下这样设置正确吗？

djdhn

有点乱 ， 没看懂。

迷雾重重

建议不要贴程序！