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TMS320F28035在做电机控制,算输出电流时,AD中断周期是不是要和输出频率有关系呢?

Other Parts Discussed in Thread: TMS320F28035

TMS320F28035在做电机控制,算输出电流时,采样得到的时交流信号,AD中断由epwm来触发,AD中断周期是不是要和输出频率有关系呢?

  • 因为PWM信号的频率一般是远大于输出频率的,所以该频率不需要去调整,这样做的好处有很多:例如模拟量采集回来后因为采样周期是固定的,所以可以很方便做滤波器;再例如固定频率下的死区效应相对固定,比较容易处理。