Velocity control system using piezoelectric transducers

Details Velocity control system using piezoelectric transducers Velocity control system using piezoelectric transducers

1988-05-04

1989-08-15

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

310316, G01C 1964, B06B 106, H02N 200

Patent

active

048569011

ABSTRACT:
A piezoelectric activated dither suspension system for a ring laser gyroscope has all of the transducer elements connected in parallel to simultaneously produce sustaining torque for dither motion and respond to a back component of current produced by the vibrational motion of the gyro block. The generated current, separated from drive currents from the torquer amplifier by a transformer or, in an alternative embodiment, by sensing resistors, produces the very signal used to control and sustain the oscillations. By utilizing all transducers both as torquer and pickoff elements, economies of drive efficiency, wiring simplification and circuit redundancies are achieved.

REFERENCES:
patent: 3889166 (1975-06-01), Scurlock
patent: 4314174 (1982-02-01), Wing et al.

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