×

Electrostatic accelerometer

  • US 4,102,202 A
  • Filed: 11/26/1976
  • Issued: 07/25/1978
  • Est. Priority Date: 11/26/1976
  • Status: Expired due to Term
First Claim
Patent Images

1. An electrostatic accelerometer comprising:

  • a conductive pendulous mass pivotally movable about a hinge point said pendulous mass being responsive to acceleration along a sensing axis,first and second electrodes disposed on the opposite sides of said pendulous mass and in capacitive relation therewith,sources of constant current connected to said electrodes for building up a charge on said electrodes to enable said electrodes to force said pendulous mass to its null position, said charge on said electrodes being indicative of the position and direction of said pendulous mass from null,a high gain differential amplifier said pendulous mass connected to a first input of said amplifier,a source of reference voltage connected to a second input of said amplifier,a resistance means connected between ground and said first amplifier input whereby said amplifier is capable of maintaining a zero potential difference between said first and second amplifier inputs through action of said constant current sources connected as control loops, andmeans responsive to said charge on said electrodes for measuring the position and direction of displacement of said pendulous mass from null position.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×