US3665168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adaptively controlled position prediction system
Assignee: General Electric Co
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Filing: 1970-12-18
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Granted: 1972-05-23
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Expires: 1990-12-18
Abstract
Abstract Ship''s position predictor using sampled-data signal as input to a two-point predictor computer and having an adaptive correction system responsive to the predictor computer output for refining the prediction.
Inventors
- 👤 Eugene Beach Canfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:15
CPC Classifications
G; G06; G06F; G06F17/00; G06F17/10; G06F17/17
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
148 words
A system for predicting the position of a vehicle subject to periodic motion at a future instant of time and driving a servomechanism to follow the position comprising: A. means for providing sampled data RN corresponding to the vehicle''s position, B. prediction means receiving the sampled data RN and using a predetermined prediction formula for deriving a value DN of the vehicle''s position predicted for said future instant of time, C. an adaptive correction means for receiving the predicted value signal DN and responsive to at least one additional servo response signal theta N representative of the vehicles instantaneous actual position for further refining the predicted value to derive a signal EN to more accurately approximate the vehicle''s future position, and D. a servomechanism responsive to said signal EN for deriving said additional signal theta N as a servo response signal and for controlling a vehicle following element.
Claim 2
Independent Claim
148 words
A system for predicting the position of a vehicle subject to periodic motion at a future instant of time and driving a servomechanism to follow the position comprising: A. means for providing sampled data RN corresponding to the vehicle''s position, B. prediction means receiving the sampled data RN and using a predetermined prediction formula for deriving a value DN of the vehicle''s position predicted for said future instant of time, C. an adaptive correction means for receiving the predicted value signal DN and responsive to at least one additional servo response signal theta N representative of the vehicles instantaneous actual position for further refining the predicted value to derive a signal EN to more accurately approximate the vehicle''s future position, and D. a servomechanism responsive to said signal EN for deriving said additional signal theta N as a servo response signal and for controlling a vehicle following element.
Claim 3
Dependent Claim
65 words
A system according to claim 1 wherein said prediction means further comprises: A. storage means for storing the sampled data signal RN for one sampling period to derive a delayed signal RN 1 and B. computation means for generating said predicted value DN according to an equation DN RN + K (RN - RN 1), where K is a scaling constant which may be unity.
Claim 4
Dependent Claim
58 words
A system according to claim 1 wherein said prediction means further comprises: A. storage means for storing the sampled data signal RN for one sampling period to derive a delayed signal RN 1 and B. computation means for generating said predicted value DN according to an equation DN 2KRN - RN 1, where K is a scaling constant.
Claim 5
Dependent Claim
35 words
A system according to claim 3 wherein said scaling constant is chosen to approximate cos omega RTS, where said sampling period is TS and the period of movement of said vehicle is (1/ omega R).
Claim 6
Dependent Claim
41 words
A system according to claim 1 wherein said adaptive correction means further comprises computation means responsive tO said signals RN, DN and theta N for deriving said signal EN according to the equation EN DN + RN - 2 theta N.
Claim 7
Dependent Claim
65 words
A system according to claim 1 wherein said adaptive correction means further comprises: A. storage means for storing the predicted signal value DN for one sampling period to derive a delayed signal DN 1, and B. computation means responsive to said signals DN, DN 1, and theta N for deriving said signal EN according to equation EN DN + DN 1 - 2 theta N.
Claim 8
Dependent Claim
67 words
A system according to claim 1 wherein said adaptive correction means further comprises: A. storage means for storing the predicted signal value DN for one sampling period to derive a delayed signal DN 1, and B. computation means responsive to said signals DN, DN 1, RN and theta N for deriving said signal EN according to equation EN DN + (RN - DN 1) - theta N.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |