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Actuator drive control device

  • US 7,915,842 B2
  • Filed: 08/01/2005
  • Issued: 03/29/2011
  • Est. Priority Date: 08/20/2004
  • Status: Expired due to Fees
First Claim
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1. An actuator drive control device comprising:

  • a controller;

    an actuator; and

    a movable member driven by the actuator;

    wherein the controller supplies an electric current to the actuator and corrects the electric current such that the corrected electric current becomes a target electric current which causes the actuator to drive the movable member with a vibration waveform of a sine wave shape;

    wherein the target electric current is determined by adding together a driving primary electric current waveform input to the actuator with a higher-order electric current waveform which eliminates a higher-order vibration component of the actuator depending on the driving primary electric current waveform.

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