[특허]Control system with adaptive process controllers especially adapted for electric power plant operation

[미국특허] Control system with adaptive process controllers especially adapted for electric power plant operation 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F01K-007/16 F01D-017/00 G05B-011/42
출원번호	US-0413272 (1973-11-06)
발명자 / 주소	Davis Guy E. (Martinez CA)
출원인 / 주소	Westinghouse Electric Corporation (Pittsburgh PA 02)
인용정보	피인용 횟수 : 54 인용 특허 : 0

초록 ▼

An electric power plant including a steam generator and a steam turbine is operated by a control system including a turbine control, a boiler control and a plant unit master; each of the aforementioned controls includes integrating or adaptive controllers responsive to error signals to effect a desired control and ramp generators to provide an output against which a control process may be tracked. The integrating controllers include an integrating circuit for integrating an input error signal and a proportional circuit responsive to the error signal for providing an output signal to be summed with the output of the integrating circuit. The constant of the proportional circuit and the time constant of the integrating circuit are changed as a function of an index. In a control for an electric power plant, the index is the load reference provided by the plant unit master. A ramp generator is suggested that is capable of generating linear ramps at a fixed rate toward a known value, e.g. the control reference to be entered, and includes an integrating circuit to which is selectively applied first and second reference signals dependent upon whether the input signal is above or below a predetermined level.

대표청구항 ▼

A power control system including an integrating controller responsive to a first electrical input signal indicative of the difference between a reference value and a measured variable to provide a corrective output for effecting control of the variable, said integrating controller comprising: a. an integrating circuit for integrating the first electrical input signal with a time constant T; b. a proportional circuit for providing an output proportional to the first electrical input signal in accordance with a gain constant K; c. a summing circuit responsive to the outputs of said integrating circuit and said proportional circuit to provide the corrective output; and d. function generator means responsive to a second electrical input signal indicative of a system\s control index for independently varying the gain K and the time constant T as a selected function of the system\s control index.

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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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[미국특허] Control system with adaptive process controllers especially adapted for electric power plant operation 원문보기