System for gain scheduling control
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0532081
(2006-09-14)
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등록번호 |
US-7603185
(2009-10-28)
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발명자
/ 주소 |
- Stewart, Gregory E.
- Borrelli, Francesco
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출원인 / 주소 |
- Honeywell International Inc.
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대리인 / 주소 |
Crompton Seager Tufte, LLC
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인용정보 |
피인용 횟수 :
7 인용 특허 :
4 |
초록
▼
A system for controlling nonlinear plants which may be effected with gain scheduled feedback controllers. Several linear sub-controllers having various gains may be put together as one unit. The overall controller may be changed by switching from one sub-controller to another according to an exogeno
A system for controlling nonlinear plants which may be effected with gain scheduled feedback controllers. Several linear sub-controllers having various gains may be put together as one unit. The overall controller may be changed by switching from one sub-controller to another according to an exogenous or endogenous parameter. The signal to the switch may reflect operational ranges of the plant occurring at certain times and indicate the gain desired from the system relative to the output and input signals of the plant at those times. The advantages of the present approach may include a guarantee of nominal and robust stability both global and local, a permitting of the use of control structures that are familiar to industrial practitioners, and no requirement of advanced mathematical techniques for its implementation.
대표청구항
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What is claimed is: 1. A gain scheduled controller system comprising: a plurality of controllers; and a switch; and wherein: a terminal of the switch is selectively connectable to an output of nearly any controller of the plurality of controllers; each controller of the plurality of controllers com
What is claimed is: 1. A gain scheduled controller system comprising: a plurality of controllers; and a switch; and wherein: a terminal of the switch is selectively connectable to an output of nearly any controller of the plurality of controllers; each controller of the plurality of controllers comprises gains; the gains of the plurality of controllers are different; the switch comprises an input for selectively connecting the terminal of the switch to the output of a controller of the plurality of controllers, having one of the gain; a first input to the plurality of controllers is a measured parameter from an operational plant; and a second input to the plurality of controllers is connected to the terminal of the switch; the input to the switch depends in part on the measured parameter and an operating range of the plant, and in part by a factor other than the measured quantity and the operating range; and the terminal of the switch is for providing an actuator signal to the plant. 2. A gain scheduled controller system comprising: a plurality of state observers 1 to m, each having a measurement input y(t) from a mechanism, and a feedback input u(t); a plurality of state feedback controllers 1 to m having inputs connected to outputs {circumflex over (x)}1(t) to {circumflex over (x)}m(t), respectively, of the state observers 1 to m; and a switch having a first input selectively connectable to one of output v1(t) to vm(t) of the state feedback controllers 1 to m, respectively, and having an output u(t); and wherein the output u(t) is the feedback input u(t) to the state observers 1 to m, and an actuator signal to the mechanism. 3. The system of claim 2, wherein the switch has a second input σ(t) for a signal that selects which one of the outputs v1(t) to vm(t) of the plurality of state feedback controllers 1 to m is to be connected to the first input of the switch. 4. The system of claim 3, wherein: the mechanism is an operational plant; and the output u(t) of the switch is an actuator signal for the plant; and the second input signal σ(t) to the switch is for selecting, partially in accordance with an operational range of the plant, which one of the outputs v1(t) to Vm(t) of the state feedback controllers 1 to m is to be connected to the first input of the switch. 5. The system of claim 4, wherein if the operational range of the plant changes, requiring a state feedback controller having a different gain, the first input of the switch connected to one of the outputs v1(t) to vm(t) of the state feedback controllers 1 to m, is changed to another output of the outputs v1(t) to vm(t) of the state feedback controllers 1 to m, respectively. 6. A gain scheduled controller system comprising: a plurality of state observers 1 to m, each having a measurement input y(t) and a feedback input u(t); a plurality of state feedback controllers 1 to m having inputs connected to output {circumflex over (x)}1(t) to {circumflex over (x)}m(t), respectively, of the state observers 1 to m; and a switch having a first input selectively connectable to one of output v1(t) to vm(t) of the state feedback controllers 1 to m, respectively, and having an output u(t); and wherein: the output u(t) is the feedback input u(t) of the state observers 1 to m; and the switch has a second input σ(t) for a signal that selects which one of the outputs v1(t) to vm(t) of the plurality of state feedback controllers 1 to m, respectively, is to be connected to the first input of the switch; the measurement input y(t) is of a parameter of a mechanism; and the output u(t) is an actuator signal to the mechanism for affecting the parameter. 7. The system of claim 6, wherein the outputs {circumflex over (x)}1(t) to {circumflex over (x)}m(t) of the state observers 1 to m are estimated states provided to the inputs of the state feedback controllers 1 to m, respectively. 8. The system of claim 7, wherein each state feedback controller of the state feedback controllers 1 to m is for generating an actuator signal as a function of an estimated state from each state observer, respectively, of the outputs {circumflex over (x)}1(t) to {circumflex over (x)}m(t) from the state observers 1 to m.
이 특허에 인용된 특허 (4)
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Turner,Paul; Guiver,John P.; Lines,Brian; Treiber,S. Steven, Computer method and apparatus for constraining a non-linear approximator of an empirical process.
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Tsai,Kuen Yu, Method for fast design of multi-objective frequency-shaping equalizers.
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Qin S. Joe ; Ott Michael G. ; Wojsznis Wilhelm K., Method of adapting and applying control parameters in non-linear process controllers.
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Takao Kuwabara JP; Kei Katayama JP; Hiroto Nakagawa JP; Haruki Hagiwara JP, Method of controlling a pump turbine.
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Markham, Thomas R., Vehicle security module system.
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