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TMS320F28027F: 同一个控制器,换了电机以后,fast估算出的速度值和实际的不一样

Part Number: TMS320F28027F


同一个控制器,换了电机以后,fast估算出的速度值和实际的不一样,user.h中电机参数也改了,极对数也是正确的,请问是怎么回事