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Angular base sensor utilizing parallel vibrating accelerometers

  • US 4,592,233 A
  • Filed: 05/28/1985
  • Issued: 06/03/1986
  • Est. Priority Date: 09/02/1983
  • Status: Expired due to Fees
First Claim
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1. An apparatus for generating a signal representing the angular rate motion of a structure, comprising:

  • a first accelerometer, carried by the structure, for generating a first output signal representing acceleration along a first force-sensing axis;

    a second accelerometer, carried by the structure, for generating a second output signal representing acceleration along a second force-sensing axis;

    alignment means for aligning said first and second accelerometers relative to the structure in a side by side relationship with said first force-sensing axis parallel to said second force-sensing axis;

    vibration means, operatively connected to the structure and said alignment means, for vibrating said first and said second accelerometers in opposite directions toward and away from each other along collinear vibration axes which are normal to said force-sensing axes at a predetermined frequency, whereby the force and torque applied to the structure by said vibration means is balanced; and

    signal processing means, responsive to said first and second output signals, for generating a rate signal representing the angular rate motion of the structure about an axis perpendicular to the plane defined by said force-sensing axes and said vibration axis and for generating a force signal representing the acceleration of the structure along said force-sensing axes.

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