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TURN RATE SENSOR

  • US 3,839,915 A
  • Filed: 03/19/1973
  • Issued: 10/08/1974
  • Est. Priority Date: 03/19/1973
  • Status: Expired due to Term
First Claim
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1. Rate of rotation sensing apparatus comprising:

  • a mechanically resonant system including a pair of mass elements and spring suspension means coupling said elements for opposed oscillation generally along a first axis, said suspension including also electrically energizable forcing means for varying the relative alignment of said oscillatory mass elements with respect to said first axis;

    means for driving said resonant system into vibration;

    means for detecting angular oscillation of said system around a second axis which is perpendicular to said first axis;

    means, controlled by said detecting means and responsive to the component of detected angular oscillation which is in-phase with the vibration of the resonant system, for energizing said forcing means to form a servo loop tending to minimize said component, the quadrature component of the detected angular oscillation being indicative of the rate of rotation of said mechanically resonant system around said second axis.

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