US3287615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-adaptive control apparatus
Assignee: North American Aviation Corp
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Filing: 1963-10-01
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Granted: 1966-11-22
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Expires: 1983-10-01
Abstract
No abstract record available.
Inventors
- 👤 Richard K Smyth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:00
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/08; G05D1/0808; G05D1/0816; G05D1/0825; G05B; G05B13/00; G05B13/02; G05B13/0205; G05B13/024
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
IN A CONTROL SYSTEM HAVING A CONTROLLER AND A CONTROLLED ELEMENT, MEANS FOR COMPENSATING FOR VARIATIONS IN THE RESPONSE CHARACTERISTICS OF SAID CONTROLLED ELEMENT, COMPRISING: A SOURCE OF FIXED FREQUENCY INPUT SIGNALS COUPLED TO THE INPUT OF SAID CONTROLLER; A NARROW BAND-PASS FILTER RESPONSIVE TO THAT COMPONENT OF A SENSED OUTPUT OF SAID CONTROLLED ELEMENT CORRESPONDING TO THE FIXED FREQUENCY INPUT FROM SAID SOURCE; FIRST AMPLITUDE SENSITIVE CONTROL MEANS HAVING A FIRST AND SECOND INPUT CONNECTED TO SAID SOURCE AND SAID NARROW BANDPASS FILTER RESPECTIVELY FOR ADJUSTING THE GAIN OF SAID SYSTEM; AND SECOND PHASE-SENSITIVE CONTROL MEANS HAVING A FIRST AND SECOND INPUT CONNECTED TO SAID SOURCE AND SAID NARROW BAND-PASS FILTER RESPECTIVELY FOR OPPOSITELY ADJUSTING A POLE AND ZERO OF THE FREQUENCY-SENSITIVE RESPONSE OF SAID SYSTEM.
Claim 2
Dependent Claim
127 words
IN A CONTROL SYSTEM HAVING A CONTROLLER AND A CONTROLLED ELEMENT, MEANS FOR COMPENSATING FOR VARIATIONS IN THE RESPONSE CHARACTERISTICS OF SAID CONTROLLED ELEMENT, COMPRISING: A SOURCE OF FIXED FREQUENCY INPUT SIGNALS COUPLED TO THE INPUT OF SAID CONTROLLER; A NARROW BAND-PASS FILTER RESPONSIVE TO THAT COMPONENT OF A SENSED OUTPUT OF SAID CONTROLLED ELEMENT CORRESPONDING TO THE FIXED FREQUENCY INPUT FROM SAID SOURCE; FIRST AMPLITUDE SENSITIVE CONTROL MEANS HAVING A FIRST AND SECOND INPUT CONNECTED TO SAID SOURCE AND SAID NARROW BANDPASS FILTER RESPECTIVELY FOR ADJUSTING THE GAIN OF SAID SYSTEM; AND SECOND PHASE-SENSITIVE CONTROL MEANS HAVING A FIRST AND SECOND INPUT CONNECTED TO SAID SOURCE AND SAID NARROW BAND-PASS FILTER RESPECTIVELY FOR OPPOSITELY ADJUSTING A POLE AND ZERO OF THE FREQUENCY-SENSITIVE RESPONSE OF SAID SYSTEM.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |