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Temperature compensated digital inertial sensorA circuit which maintains the inertial element of a gyroscope or accelerometer at a constant position by delivering pulses to a rebalancing motor is discussed. The circuit compensates for temperature changes by using a temperature sensor that varies the threshold of inertial element movement required to generate a rebalance pulse which reacts to changes in viscosity of the flotation fluid. The output of the temperature sensor also varies the output level of the current source to compensate for changes in the strength of the magnets of the rebalancing motor. The sensor also provides a small signal to the rebalance motor to provide a temperature dependent compensation for fixed drift or fixed bias.
Document ID
19740006981
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Hand, P. J. (NASA Pasadena Office CA, United States)
Date Acquired
September 3, 2013
Publication Date
January 1, 1974
Subject Category
General
Accession Number
74N15094
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-CASE-NPO-13044-1|US-PATENT-3,782,205
Patent Application
US-PATENT-APPL-SN-305012

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