Motor amplitude control circuit in conductor-on-insulator tuning

Details Motor amplitude control circuit in conductor-on-insulator tuning Motor amplitude control circuit in conductor-on-insulator tuning

1995-10-11

2000-05-16

Ip, Paul

Electricity: motive power systems

Positional servo systems

With particular 'error-detecting' means

318640, 331 1A, 331 35, H03B 530, G05D 1500

Patent

active

06064169&

ABSTRACT:
A control system for a tuning fork gyroscope uses motor frequency to control motor amplitude. The tuning fork gyroscope has a drive signal input and an output signal from which motor frequency is determined. A phase/frequency detector generates an error signal by comparing the actual oscillation phase of the output signal with the phase of a reference signal from a crystal controlled frequency synthesizer. The error signal is filtered in a feedback loop control to reduce phase detector ripple. The output of the loop controller is then used to determine the appropriate drive signal to drive the error signal to a constant and maintain a predetermined oscillation frequency.

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patent: 3743960 (1973-07-01), Steudel
patent: 4127028 (1978-11-01), Cox et al.
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patent: 4852409 (1989-08-01), Herzl
patent: 5050439 (1991-09-01), Thompson
patent: 5383362 (1995-01-01), Putty et al.
patent: 5444641 (1995-08-01), White
patent: 5505084 (1996-04-01), Greiff et al.
patent: 5585562 (1996-12-01), Kurata et al.

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