×

Pendulous oscillating gyroscopic and accelerometer multisensor and amplitude oscillating gyroscope

  • US 5,712,426 A
  • Filed: 10/16/1995
  • Issued: 01/27/1998
  • Est. Priority Date: 08/03/1993
  • Status: Expired due to Term
First Claim
Patent Images

1. A pendulous oscillating gyroscope and accelerometer multisensor having an accelerometer input axis and a gyroscopic input axis, comprising:

  • a fixed case;

    a servo driven member mounted to said case for sinusoidal oscillation about an accelerometer servo axis which is the same as the gyroscopic input axis;

    a torque summing member mounted to said servo driven member to allow rotational motion about an output axis transverse to said servo axis;

    a rotor driven member mounted to said torque summing member for sinusoidal oscillation about a reference axis transverse to both said output axis and said servo axis;

    a pendulosity carried by at least one of said torque summing member and said rotor driven member to create a mass imbalance about the output axis, in which pendulosity torque due to acceleration along the accelerometer input axis causes a DC rotation of said torque summing member about said output axis;

    first oscillation means for sinusoidally oscillating said rotor driven member about said reference axis, the oscillation having a first amplitude, a first frequency and a first phase;

    second oscillation means for sinusoidally oscillating said servo driven member about said servo axis, the oscillation having a second amplitude, a second frequency and a second phase;

    wherein the oscillations of said rotor driven member and of said servo driven member create a first gyroscopic torque, which causes DC rotation of said torque summing member about said output axis, and wherein DC rotation of said fixed case about said gyroscopic input axis creates a second gyroscopic torque, which causes an AC oscillation of said torque summing member about said output axis;

    measurement means for determining the rotational motion of said torque summing member about said output axis;

    control means, responsive to said measurement means, for altering the oscillation of at least one of said first and second oscillation means to create a change in said first gyroscopic torque to counterbalance pendulosity torque;

    means, responsive to said control means, for determining acceleration of said multisensor along said accelerometer input axis; and

    means, responsive to said measurement means, for determining the rotational rate of said multisensor about said gyroscopic input axis.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×