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Accelerometer with isolator for common mode inputs

  • US 4,766,768 A
  • Filed: 10/22/1987
  • Issued: 08/30/1988
  • Est. Priority Date: 10/22/1987
  • Status: Expired due to Term
First Claim
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1. An accelerometer for measuring acceleration along a sensitive axis, the accelerometer comprising:

  • a support;

    a proof mass;

    mounting means for mounting the proof mass to the support such that the proof mass can rotate about a hinge axis perpendicular to the sensitive axis;

    an isolator;

    isolator suspension means for mounting the isolator to the support, the isolation suspension means being relatively compliant for isolator movement parallel to a transducer axis normal to the hinge axis and relatively noncompliant for isolator rotation about the hinge axis; and

    two force transducers connected between the isolator and the proof mass, the force transducers being parallel to the transducer axis, and positioned on opposite sides of the hinge axis from one another such that rotation of the proof mass about the hinge axis puts one force transducer in tension and the other force transducer in compression.

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