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Abnormality monitoring device for motor control system

  • US 20060018636A1
  • Filed: 07/25/2005
  • Published: 01/26/2006
  • Est. Priority Date: 07/23/2004
  • Status: Active Grant
First Claim
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1. An abnormality monitoring device for an motor control system, comprising:

  • a control section configured to generate a PWM control signal to control a motor;

    a driving section configured to generate a PWM driving signal based on the PWM control signal to drive the motor;

    a counting section configured to count pulse periods of the PWM driving signal output from the driving section; and

    an abnormality judging section configured to determine whether the driving section is functioning abnormally based on the PWM control signal and a counting result produced by the counting section.

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