US3920199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rate-gyro stabilized platform
Assignee: United States Department of the Navy
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Filing: 1974-05-03
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Granted: 1975-11-18
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Expires: 1994-05-03
Abstract
Abstract An electronic guidence system compensation network of a rate gyro stabilized platform wherein missile stability is improved by compensating for the gimbal''s bearing, or coulomb, friction.
Inventors
- 👤 William H Woodworth
- 👤 Marc L Moulton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:08
CPC Classifications
G; G01; G01C; G01C21/00; G01C21/10; G01C21/12; G01C21/16; G01C21/18; F; F42; F42B; F42B15/00; F42B15/01
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
96 words
In a rate-gyro controlled platform of a missile guidance system, a platform stabilizing network, comprising: an electronically driven, gimbal mounted, rate-gyro stabilized platform on a supporting structure wherein the rate-gyro is electronically processed to provide an electrical output deviant from a value indicative of the spatial angular rate of change of the platform by a value indicative of the coulomb friction inherent in the gimbal bearings; circuit means coupled to said output for providing an electrical Signal definitive of said value indicative of the coulomb friction, which signal can be used to compensate for said deviation.
Claim 2
Dependent Claim
96 words
In a rate-gyro controlled platform of a missile guidance system, a platform stabilizing network, comprising: an electronically driven, gimbal mounted, rate-gyro stabilized platform on a supporting structure wherein the rate-gyro is electronically processed to provide an electrical output deviant from a value indicative of the spatial angular rate of change of the platform by a value indicative of the coulomb friction inherent in the gimbal bearings; circuit means coupled to said output for providing an electrical Signal definitive of said value indicative of the coulomb friction, which signal can be used to compensate for said deviation.
Claim 3
Dependent Claim
46 words
The apparatus of claim 1 wherein said platform is driven by at least one torquer controlled by a combination of said processed output and an externally generated signal, and said circuit means includes an integrator coupled to said combination to provide an output for said compensation.
Claim 4
Dependent Claim
84 words
The apparatus of claim 2 further including a vidicon and video amplifier for sensing and amplifying the electronic image of an object of interest; electronics associated with said vidicon for controlling the trace of said vidicon, including a deflection amplifier; and, an electronic tracker including a gate generator for tracking said object by maintaining said image within the gate generated by said gate generator; wherein the output of said integrator is coupled to said deflection amplifier and gate generator to compensate for said deviation.
Claim 5
Dependent Claim
68 words
The apparatus of claim 3 wherein a demodulator is coupled to the output of said rate-gyro, a frequency compensator is coupled to said demodulator, and a torquer amplifier including said torquer is coupled to said frequency compensator, for processing the output of said rate-gyro, wherein said tracker provides an output coupled to said torquer amplifier for combining with the output of said frequency compensator for controlling said torquer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-17 | 1979-05-19 | 1979-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-17 | 1983-05-19 | 1983-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-17 | 1987-05-19 | 1987-11-18 | $7700.00 | Window Closed / Lapsed |