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Pulse width modulation drive signal for a MEMS gyroscope

  • US 6,718,823 B2
  • Filed: 04/30/2002
  • Issued: 04/13/2004
  • Est. Priority Date: 04/30/2002
  • Status: Active Grant
First Claim
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1. A system for measuring a rate of rotation of a microelectromechanical system (MEMS) gyroscope comprising in combination:

  • the MEMS gyroscope for measuring a rate of rotation, the MEMS gyroscope generating a pickoff signal; and

    drive electronics coupled to the MEMS gyroscope, the drive electronics computing an average voltage of the pickoff signal to create a direct current threshold level, wherein the drive electronics provide a pulse width modulation drive signal based on the direct current threshold level to the MEMS gyroscope.

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