US3870940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for compensating two axes gimbal error
Assignee: Honeywell Inc
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Filing: 1971-11-18
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Granted: 1975-03-11
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Expires: 1991-11-18
Abstract
Abstract Apparatus for simultaneously compensating pitch and roll gimbal errors in directional gyroscopes for use in navigable craft comprises means responsive to the output signal of the directional gyroscopes and a signal related to the roll attitude of the craft for compensating the gyroscope output signal for roll gimbal error. Further means are included responsive to the roll attitude signal, a pitch attitude signal and a signal related to heading for providing a pitch gimbal error compensation signal. This pitch gimbal error compensation signal is combined with the roll compensated directional gyroscope output signal in a repeater servo loop to provide a signal accurately representative of heading irrespective of the pitch and roll attitude of the directional gyroscope.
Inventors
- 👤 David A Espen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:03
CPC Classifications
G; G01; G01C; G01C19/00; G01C19/02; G01C19/34
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
250 words
In a gyroscopic data transmission system including a directional gyroscope having a transmitter connected thereto and a receiver electrically coupled to said transmitter by a multicircuit line and wherein said transmitter and receiver have multiple branches each coupled to a respective branch of said multicircuit line, apparatus for compensating the heading signal of said directional gyroscope for gimbal errors with respect to roll and pitch axes thereby providing a totally compensated heading output signal substantially absent said roll and pitch gimbal errors comprising means for providing pitch and roll signals representative of the pitch and roll attitudes of said gyroscope respectively, means coupled in only one branch of said multicircuit line and responsive to only one of said pitch and roll signals for compensating said heading signal only for said gimbal error corresponding to said one signal thereby providing a single axis compensated heading signal at said receiver, the remaining branches of said multicircuit line directly connecting the associated respective branches of said transmitter to the corresponding branches of said receiver, compensation means responsive to said heading signal of said gyroscope and to said pitch and roll signals for providing a compensation signal in accordance with the product of a function of heading, a function of said pitch attitude and a function of said roll attitude, and means coupled to the output of said receiver and to said compensation means for combining said compensation signal with said single axis compensated heading signal to provide said totally compensated heading output signal.
Claim 2
Dependent Claim
250 words
In a gyroscopic data transmission system including a directional gyroscope having a transmitter connected thereto and a receiver electrically coupled to said transmitter by a multicircuit line and wherein said transmitter and receiver have multiple branches each coupled to a respective branch of said multicircuit line, apparatus for compensating the heading signal of said directional gyroscope for gimbal errors with respect to roll and pitch axes thereby providing a totally compensated heading output signal substantially absent said roll and pitch gimbal errors comprising means for providing pitch and roll signals representative of the pitch and roll attitudes of said gyroscope respectively, means coupled in only one branch of said multicircuit line and responsive to only one of said pitch and roll signals for compensating said heading signal only for said gimbal error corresponding to said one signal thereby providing a single axis compensated heading signal at said receiver, the remaining branches of said multicircuit line directly connecting the associated respective branches of said transmitter to the corresponding branches of said receiver, compensation means responsive to said heading signal of said gyroscope and to said pitch and roll signals for providing a compensation signal in accordance with the product of a function of heading, a function of said pitch attitude and a function of said roll attitude, and means coupled to the output of said receiver and to said compensation means for combining said compensation signal with said single axis compensated heading signal to provide said totally compensated heading output signal.
Claim 3
Dependent Claim
250 words
In a gyroscopic data transmission system including a directional gyroscope having a transmitter connected thereto and a receiver electrically coupled to said transmitter by a multicircuit line and wherein said transmitter and receiver have multiple branches each coupled to a respective branch of said multicircuit line, apparatus for compensating the heading signal of said directional gyroscope for gimbal errors with respect to roll and pitch axes thereby providing a totally compensated heading output signal substantially absent said roll and pitch gimbal errors comprising means for providing pitch and roll signals representative of the pitch and roll attitudes of said gyroscope respectively, means coupled in only one branch of said multicircuit line and responsive to only one of said pitch and roll signals for compensating said heading signal only for said gimbal error corresponding to said one signal thereby providing a single axis compensated heading signal at said receiver, the remaining branches of said multicircuit line directly connecting the associated respective branches of said transmitter to the corresponding branches of said receiver, compensation means responsive to said heading signal of said gyroscope and to said pitch and roll signals for providing a compensation signal in accordance with the product of a function of heading, a function of said pitch attitude and a function of said roll attitude, and means coupled to the output of said receiver and to said compensation means for combining said compensation signal with said single axis compensated heading signal to provide said totally compensated heading output signal.
Claim 4
Dependent Claim
250 words
In a gyroscopic data transmission system including a directional gyroscope having a transmitter connected thereto and a receiver electrically coupled to said transmitter by a multicircuit line and wherein said transmitter and receiver have multiple branches each coupled to a respective branch of said multicircuit line, apparatus for compensating the heading signal of said directional gyroscope for gimbal errors with respect to roll and pitch axes thereby providing a totally compensated heading output signal substantially absent said roll and pitch gimbal errors comprising means for providing pitch and roll signals representative of the pitch and roll attitudes of said gyroscope respectively, means coupled in only one branch of said multicircuit line and responsive to only one of said pitch and roll signals for compensating said heading signal only for said gimbal error corresponding to said one signal thereby providing a single axis compensated heading signal at said receiver, the remaining branches of said multicircuit line directly connecting the associated respective branches of said transmitter to the corresponding branches of said receiver, compensation means responsive to said heading signal of said gyroscope and to said pitch and roll signals for providing a compensation signal in accordance with the product of a function of heading, a function of said pitch attitude and a function of said roll attitude, and means coupled to the output of said receiver and to said compensation means for combining said compensation signal with said single axis compensated heading signal to provide said totally compensated heading output signal.
Claim 5
Dependent Claim
247 words
In a gyroscopic data transmission system including a directional gyroscope having a transmitter connected thereto and a receiver electrically coupled to said transmitter by a multicircuit line and wherein said transmitter and receiver have multiple branches each coupled to a respective branch of said multicircuit line, apparatus for compensating the heading signal of said directional gyroscope for gimbal errors with respect to roll and pitch axes thereby providing a totally compensated heading output signal substantially absent said roll and pitch gimbal errors comprising attitude means for providing pitch and roll signals representative of the pitch and roll attitudes of said gyroscope respectively, roll compensation means coupled in only one branch of said multicircuit line and responsive to only said roll signal for compensating said heading signal only for said roll gimbal error thereby providing a roll compensated heading signal at said receiver, the remaining branches of said multicircuit line directly connecting the associated respective branches of said transmitter to the corresponding branches of said receiver, pitch compensation means responsive to said heading signal of said gyroscope and to said pitch and roll signals for providing a pitch compensation signal in accordance with the product of a function of heading, a function of said pitch attitude and a function of said roll attitude, and combining means coupled to the output of said receiver and to said pitch compensation means for combining said pitch compensation signal with said roll compensated heading signal to provide said totally compensated heading signal.
Claim 6
Dependent Claim
247 words
In a gyroscopic data transmission system including a directional gyroscope having a transmitter connected thereto and a receiver electrically coupled to said transmitter by a multicircuit line and wherein said transmitter and receiver have multiple branches each coupled to a respective branch of said multicircuit line, apparatus for compensating the heading signal of said directional gyroscope for gimbal errors with respect to roll and pitch axes thereby providing a totally compensated heading output signal substantially absent said roll and pitch gimbal errors comprising attitude means for providing pitch and roll signals representative of the pitch and roll attitudes of said gyroscope respectively, roll compensation means coupled in only one branch of said multicircuit line and responsive to only said roll signal for compensating said heading signal only for said roll gimbal error thereby providing a roll compensated heading signal at said receiver, the remaining branches of said multicircuit line directly connecting the associated respective branches of said transmitter to the corresponding branches of said receiver, pitch compensation means responsive to said heading signal of said gyroscope and to said pitch and roll signals for providing a pitch compensation signal in accordance with the product of a function of heading, a function of said pitch attitude and a function of said roll attitude, and combining means coupled to the output of said receiver and to said pitch compensation means for combining said pitch compensation signal with said roll compensated heading signal to provide said totally compensated heading signal.
Claim 7
Dependent Claim
44 words
The apparatus of claim 2 in which said pitch compensation means comprises means for providing said pitch compensation signal in accordance with pitch compensation signal f( ) theta phi where f( ) said function of heading, theta said pitch attitude, phi said roll attitude.
Claim 8
Dependent Claim
45 words
The apparatus of claim 2 in which said pitch compensation means comprises means for providing said pitch compensation signal in accordance with pitch compensation signal K (1+cos 2 psi ) theta phi where psi heading theta said pitch attitude phi said roll attitude K constant.
Claim 9
Dependent Claim
14 words
The apparatus of claim 2 in which said attitude means comprises vertical gyroscope means.
Claim 10
Dependent Claim
31 words
The apparatus of claim 2 in which said combining means comprises servo loop means nulled in accordance with the sum of said roll compensated heading signal and said pitch compensation signal.
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) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |