Method for testing speed of electric machine

Method for testing speed of electric machine

  • CN 100,430,728 C
  • Filed: 12/18/2002
  • Issued: 11/05/2008
  • Est. Priority Date: 12/18/2001
  • Status: Active Grant
First Claim
Patent Images

1. a method is used for producing the signal of representing DC (PMDC) motor speed, and this motor comprises a phase-wound rotor, said method comprising the steps of:

  • Produce living signal (21) by the Electromagnetic Launching of measuring described motor;

    WithBy this life signal filtering is used for producing secondary signal (25) with what isolate described wound rotor, the effect of described wound rotor comprises the spike relevant with commutation;

    It is characterized in thatBy handling described secondary signal (25), spike is changed into square pulse, thereby produce output signal (27).

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