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TMS570LC4357: HWAG模块中关于滤波器使用的疑惑?

Part Number: TMS570LC4357

技术支持您好,

本人所用器件手册为spnu563a,根据文档说明,HWAG有两个滤波器filter1和filter2,在singularity tooth期间,滤波器filter2生效。

此处有2点疑问:

1、若齿轮信号存在singularity,开启滤波,HWAG如何知道当前是否完成齿轮同步,并让filter2在正确的齿信号(singularity tooth)期间产生作用?

2、若齿轮信号没有singularity,开启滤波,如下图,那么filter2是否会起作用?