[특허]Multivariable nonlinear process controller

Multivariable nonlinear process controller 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G05B-013/02 G06F-015/18
출원번호	US-0333161 (1994-11-01)
발명자 / 주소	Hansen Peter D. (Wellesley Hills MA) Badavas Paul C. (Southboro MA)
출원인 / 주소	The Foxboro Company (Foxboro MA 02)
인용정보	피인용 횟수 : 83 인용 특허 : 0

초록 ▼

A method and apparatus for a robust process control system that utilizes a neural-network multivariable inner-loop PD controller cascaded with decoupled outer-loop controllers with integral action, the combination providing a multivariable nonlinear PID and feedforward controller. The inner-loop neural-network controller is trained to achieve optimal performance behavior when future process behavior repeats the training experience. The outer-loop controllers compensate for process changes, unmeasured disturbances, and modeling errors. In the first and second embodiments, the neural network is used as an inner-loop controller in a process control system having a constraint management scheme which prevents integral windup by controlling the action of the outer-loop controllers when limiting is detected in the associated manipulated-variable control path. In the second and third embodiments, the neural-network controller is used without the integral controllers or the constraint management scheme as a simple PD feedforward controller.

대표청구항 ▼

An apparatus for controlling a process having process inputs and process outputs comprising a controlled variable, the process responsive to a manipulated variable to vary the process in relation to the controlled variable, said apparatus comprising: a) measuring means for measuring values of one of said process outputs generating a process output signal representative thereof; b) setpoint means for receiving a setpoint which represents a target value of the controlled variable; c) control means, coupled to said measuring means and the process, for generating a selected value of the manipulated variable as a function of the setpoint and the process output signal, said control means utilizing a nonlinear function generator previously trained to compute the selected value of the manipulated variable in accordance with an optimum prediction time, the optimum prediction time representing the effective response time of the process to a change in the setpoint, and the selected value of the manipulated variable representing a change in the process needed to move the controlled variable towards the setpoint as advanced by the optimum prediction time; and d) actuator means, coupled to said control means and said process, for applying the selected value of the manipulated variable to the process.

이 특허를 인용한 특허 (83)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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연합인증

Multivariable nonlinear process controller 원문보기

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Multivariable nonlinear process controller 원문보기

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이 특허를 인용한 특허 (83)

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