US3250897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-adaptive systems for automatic control of dynamic performance by controlling gain and phase margin
Assignee: Individual
•
Filing: 1961-10-05
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Granted: 1966-05-10
•
Expires: 1981-10-05
Abstract
No abstract record available.
Inventors
- 👤 Vasu George
- 👤 Kirby W Hiller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:53
CPC Classifications
G; G05; G05B; G05B13/00; G05B13/02; G05B13/0205; G05B13/024
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
IN A CONTROL SYSTEM, MEANS FOR MAINTAINING THE GAIN MARGIN OF SAID SYSTEM WHEREIN THE GAIN MARGIN REPRESENTS A SIGNIFICANT CONTROL PERFORMANCE CRITERION, MEANS FOR MEASURING THE LOOP GAIN OF SAID SYSTEM AT THE FREQUENCY FOR WHICH THE LOOP PHASE-SHIFT IS 360*, MEANS FOR COMPARING THE MEASURED GAIN OF SAID SYSTEM WITH A FIXED VALUE TO THEREBY PROVIDE A RESULTANT ERROR SIGNAL, AND MEANS RESPONSIVE TO SAID ERROR SIGNAL FOR CORRECTING GAIN OF SAID SYSTEM EFFECTIVE TO CONTROL THE GAIN MARGIN OF SAID SYSTEM, COMPARATOR MEANS FOR COMPARING THE MEASURED PHASE-SHIFT OF SAID SYSTEM WITH A SET VALUE WHICH IS SIG-
Claim 2
Dependent Claim
101 words
IN A CONTROL SYSTEM, MEANS FOR MAINTAINING THE GAIN MARGIN OF SAID SYSTEM WHEREIN THE GAIN MARGIN REPRESENTS A SIGNIFICANT CONTROL PERFORMANCE CRITERION, MEANS FOR MEASURING THE LOOP GAIN OF SAID SYSTEM AT THE FREQUENCY FOR WHICH THE LOOP PHASE-SHIFT IS 360*, MEANS FOR COMPARING THE MEASURED GAIN OF SAID SYSTEM WITH A FIXED VALUE TO THEREBY PROVIDE A RESULTANT ERROR SIGNAL, AND MEANS RESPONSIVE TO SAID ERROR SIGNAL FOR CORRECTING GAIN OF SAID SYSTEM EFFECTIVE TO CONTROL THE GAIN MARGIN OF SAID SYSTEM, COMPARATOR MEANS FOR COMPARING THE MEASURED PHASE-SHIFT OF SAID SYSTEM WITH A SET VALUE WHICH IS SIG-
References Cited (Backward Citations)
US2940028A
Cited
US2928035A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |