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Controlled vibration angular rate sensor

  • US 5,193,391 A
  • Filed: 11/14/1990
  • Issued: 03/16/1993
  • Est. Priority Date: 11/14/1990
  • Status: Expired due to Fees
First Claim
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1. A vibratory angular rate sensor for measuring the rate of turn of an object affixed to said sensor, said sensor comprising:

  • a plurality of elongated tynes with each tyne having ah end affixed to a common base and arranged about a common axis;

    drive means for vibrating said tynes with a first one of said tynes vibrating in opposition to a second one of tynes in a selected direction at a selected frequency,a first coupling means affixed to each of said tynes at a first selected distance away from said common base for providing a predetermined amount of coupling between said tynes for a first in-phase mode of vibration of said tynes for separating by a selected amount the frequency of said first in-phase mode of vibration from the frequency of a first out-of-phase mode of vibration of said tynes, andpickoff means associated with said second one of said tynes and responsive to said vibration of said second tyne for generating output signals, representing changes in the vibratory pattern of said tynes caused by the rotation of said object about said common axis.

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