[특허]Maximizing process production rates using permanent constraints

Maximizing process production rates using permanent constraints 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G05B-013/02
출원번호	US-0226911 (1994-04-13)
발명자 / 주소	Lim Kian Y. (Corpus Christi TX) McAnally III Henry B. (Cypress TX) Stewart Jr. William B. (Kingwood TX)
출원인 / 주소	The M. W. Kellogg Company (Houston TX 02)
인용정보	피인용 횟수 : 49 인용 특허 : 0

초록 ▼

The present invention optimizes the relationship of variables associated with a process having inputs and outputs such that the process has controlled variables, manipulated variables, associated variables and disturbance variables, to maximize production rates. The method of optimizing the relationship includes the steps of prioritizing errors associated with the controlled variables, optimizing controlled variable deviations from their setpoints over a predetermined future time horizon based upon manipulated variable differential moves, suppressing errors associated with the future controlled variable while penalizing moves having large manipulated variable movement for balancing the reduction of future control error against large manipulated variable movement, weighting the manipulated variables for reducing deviation of the manipulated variable from a predetermined target value set artificially high so as to allow preferential movement with respect to some manipulated variables over other manipulated variables, and applying a constraint deviation variable to effectuate deviations outside allowable bounds.

대표청구항 ▼

A method for optimizing the relationship of variables associated with a plant process having inputs and outputs, comprising the steps of: (a) measuring variables of the process comprising controlled, manipulated, associated and disturbance variables; (b) employing a model predictive controller comprising a control routine for determining differential moves of the manipulated variables based on the controlled variable(s), one or more of the associated variables, one or more of the disturbance variables, and a permanent constraint target set at an artificially high value, comprising determining manipulated variable differential moves over a predetermined future time horizon to optimize controlled variable deviations with respect to associated setpoints by weighting at least one controlled variable relative to other controlled variables so as to prioritize errors associated with the controlled variables, by penalizing at least one future controlled variable for large manipulated variable movement to balance a reduction of future control error against large manipulated variable movement, by weighting at least one manipulated variable for reducing deviation of the manipulated variable from the target value set artificially high to allow preferential movement of at least one of the manipulated variables over another manipulated variable, and by applying a constraint deviation variable to effectuate deviations outside allowable bounds; and (c) controlling the plant operation in accordance with the differential moves determined in step (b).

이 특허를 인용한 특허 (49)

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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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Maximizing process production rates using permanent constraints 원문보기

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