Digital force balanced instrument

Details Digital force balanced instrument Digital force balanced instrument

1994-05-31

1996-03-12

William, Hezron E.

Measuring and testing

Speed, velocity, or acceleration

Acceleration determination utilizing inertial element

7386261, G01P 1500

Patent

active

054976600

ABSTRACT:
A digital force balanced instrument such as an accelerometer that incorporates a directly digital electrostatic forcer with servo loop plates charged by a digital feedback loop is disclosed. The accelerometer has a proofmass electrode suspended in a cantilever configuration between electrodes on either side thereof, which proofmass is displaced upon acceleration. Each side electrode includes a plurality of electrostatic plates sized in binarily weighted multiples of area. An induced signal in the proofmass electrode is quantized via A/D converter in the feedback loop, which activates the appropriate number of plates to force the proofmass to an initial position.

REFERENCES:
patent: 5054320 (1991-10-01), Yvon
patent: 5142921 (1992-09-01), Stewart et al.
patent: 5277053 (1994-01-01), McLane et al.
U.S. Ser. No. 08/097,084, filed Jul. 26, 1993 by Warren.

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