• 状态
  • 已锁定 已锁定
  • 回复 5 回复
  • 订户 28 订户
  • 视图 2040 视图
  • 用户 0 会员在此处
选项
选项
相关

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

spwm滤波后，出现的馒头波的频率，和理论值不一样，怎么回事

lin wen
Expert 1670 points


三角波fr=30kHZ,正弦波fc=50HZ,N=600;

用规则采样法，

采用增减计数模式

脉宽值

 duty=500*(sin(6.283*k1/600));

EPwm2Regs.CMPA.half.CMPA = duty;
EPwm2Regs.CMPB = duty;

馒头波的频率，应该为50hz,但通过示波器观察却为10hz,为什么会这样