Patent US3911345A successfully refreshed from Google Patents.
US3911345A
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Adaptive control system using command tailoring
Assignee: United States Department of the Navy
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Filing: 1973-06-04
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Granted: 1975-10-07
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Expires: 1993-06-04
Abstract
Abstract An adaptive control system for the tailoring of outer loop error command signals so that established performance capabilities of inner loop elements are not exceeded. Self-adaptive optimal response control is accomplished by monitoring instrumented signal levels and derivatives, comparing these to component limitations and adjusting all outer error signal gains proportionally to allowable signal level. This technique can be used on either proportional or bang/bang control. The sequential incorporation of error command signal tailoring, moving out from inner elements to inner loops to succeeding outer control loops in high gain multiple feedback control systems provides a very practical means of implementing a self-adaptive control system which optimizes performance within physical hardware constraints and under conditions involving extreme variations in intrinsic gains command activity or signal levels, and noise influences.
Inventors
- 👤 Donald R Totten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:04
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/08; G05D1/0808; G05D1/0816; G05D1/0825
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
170 words
An adaptive control means for a feedback control system in which at least one system function is varied by said adaptive control means to optimize the response of said system to a control input under widely varying operating conditions, said adaptive control means comprising: a. an airframe having controllable functions, b. command control input means for commanding a change in at least one of the controllable functions, c. reference signal means representing limits of said controllable functions, d. sensing means providing output signals representing the actual response of said airframe to said command control input means, e. means comparing said output signals with said command control input means for producing an error signal, f. means comparing said output signal means with said reference means for providing a control signal, g. means coupled to said error signal producing means and to said control signal providing means and being responsive to said control signal to prevent said error signal from effecting a change that would exceed the limits of said controllable functions.
Claim 2
Dependent Claim
170 words
An adaptive control means for a feedback control system in which at least one system function is varied by said adaptive control means to optimize the response of said system to a control input under widely varying operating conditions, said adaptive control means comprising: a. an airframe having controllable functions, b. command control input means for commanding a change in at least one of the controllable functions, c. reference signal means representing limits of said controllable functions, d. sensing means providing output signals representing the actual response of said airframe to said command control input means, e. means comparing said output signals with said command control input means for producing an error signal, f. means comparing said output signal means with said reference means for providing a control signal, g. means coupled to said error signal producing means and to said control signal providing means and being responsive to said control signal to prevent said error signal from effecting a change that would exceed the limits of said controllable functions.
Claim 3
Dependent Claim
54 words
The control system of claim 1 further comprising: a. actuator means coupled to said error signal control means and being responsive to said error signal for changing at least one of said controllable functions, b. sensing means for providing output signals representing the repsonse of said actuator means to further control said Error signal.
Claim 4
Dependent Claim
42 words
The control system of claim 2 wherein said airframe sensing means provides output signals representing the airframe position rate and acceleration functions, respectively, and said actuator sensing means provides a plurality of output signals representing actuator deflection position, rate and acceleration, respectively.
Claim 5
Dependent Claim
22 words
The control system of claim 3 wherein said error signal producing means includes a comparator circuit for each of said sensed signals.
Claim 6
Dependent Claim
54 words
The system of claim claim 4 wherein said control signal providing means includes a plurality of processing circuits equal to the number of said sensed signals, each of said processing circuits having a sensed signal input and a reference signal input so that a control signal is provided for each of the sensed signals.
Claim 7
Dependent Claim
24 words
The control system of claim 5 wherein said error signal control means includes a multiplying circuit equal to the number of said processing circuits.
Claim 8
Dependent Claim
72 words
The control system of claim 6 wherein each of said comparator circuits has a first input coupled to said airframe position sensor, said airframe position rate sensor, said airframe position acceleration sensor, said actuator deflection position sensor said actuator deflection position rate sensor and said actuator deflection position acceleration sensor, respectively, and a second input coupled to said command control input means and the output of one of said multiplying circuits, respectively.
Claim 9
Dependent Claim
22 words
The control system of claim 3 wherein said error signal producing means includes one comparator circuit for all of said sensed signals.
Claim 10
Dependent Claim
170 words
An adaptive control means for a feedback control system in which at least one system function is varied by said adaptive control means to optimize the response of said system to a control input under widely varying operating conditions, said adaptive control means comprising: a. a device having controllable functions, b. command control input means for commanding a change in at least one of the controllable functions, c. reference signal means representing limits of said controllable functions, d. sensing means providing output signals representing the actual response of said device to said command control input means, e. means comparing said output signals with said command control input means for producing an error signal, f. means comparing said output signal means with said reference means for providing a control signal, g. means coupled to said error signal producing means and to said control signal providing means and being responsive to said control signal to prevent said error signal from effecting a change that would exceed the limits of said controllable functions.
Claim 11
Dependent Claim
170 words
An adaptive control means for a feedback control system in which at least one system function is varied by said adaptive control means to optimize the response of said system to a control input under widely varying operating conditions, said adaptive control means comprising: a. a device having controllable functions, b. command control input means for commanding a change in at least one of the controllable functions, c. reference signal means representing limits of said controllable functions, d. sensing means providing output signals representing the actual response of said device to said command control input means, e. means comparing said output signals with said command control input means for producing an error signal, f. means comparing said output signal means with said reference means for providing a control signal, g. means coupled to said error signal producing means and to said control signal providing means and being responsive to said control signal to prevent said error signal from effecting a change that would exceed the limits of said controllable functions.
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) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |