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DYNAMIC PULSE-WIDTH MODULATION MOTOR CONTROL AND MEDICAL DEVICE INCORPORATING SAME

  • US 20140055073A1
  • Filed: 11/01/2013
  • Published: 02/27/2014
  • Est. Priority Date: 03/20/2012
  • Status: Active Grant
First Claim
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1. A method of controlling a motor, the method comprising:

  • applying a modulated voltage to the motor to produce a commanded rotation of a rotor of the motor;

    determining an expected displacement based on the commanded rotation;

    obtaining a measured displacement influenced by rotation of the rotor in response to applying the modulated voltage to the motor to produce the commanded rotation; and

    adjusting a duty cycle of the modulated voltage in response to a difference between the expected displacement and the measured displacement.

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