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Ring laser gyroscope dither drive system and method

  • US 4,981,359 A
  • Filed: 06/19/1989
  • Issued: 01/01/1991
  • Est. Priority Date: 06/19/1989
  • Status: Expired due to Term
First Claim
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1. A dither drive system for a ring laser gyroscope that includes a frame mounted to a flexure having a resonant frequency, the flexure being mounted between a base and the frame such that the frame may be dithered relative to the base, comprising:

  • means for forming a digital dither signal indicative of the dither frequency;

    means for producing a first digital dither drive signal that is in-phase with the digital dither signal;

    means for producing a second digital dither drive signal that is in quadrature with the digital dither signal;

    means for converting the first and second digital dither drive signals into corresponding analog dither drive signals; and

    means for applying the analog dither drive signals to the flexure to drive the flexure at its resonant frequency.

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