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Angular velocity detection circuit for vibratory gyroscopes

  • US 5,551,292 A
  • Filed: 01/10/1995
  • Issued: 09/03/1996
  • Est. Priority Date: 03/22/1994
  • Status: Expired due to Fees
First Claim
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1. An angular velocity detection circuit for a vibrating gyroscope comprising,(a) a detection circuit, and(b) a vibrator having a vibration member having a side surface with a resonance point,(c) first and second piezo-electric elements on said side surface, each one of said piezo-electric elements having a first electrode and a second electrode, wherein said detection circuit detects differences in currents flowing in said first and second piezo-electric elements under a resonance state, and(d) a sample and hold circuit, wherein said sample and hold circuit samples and holds an output of said detection circuit at a time when displacement velocity of said vibrator becomes zero and angular velocity based on the output of said sample and hold circuit is detected.

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