Control method and apparatus

Details Control method and apparatus Control method and apparatus

2008-05-20

2008-05-20

Vincent, David (Department: 2121)

Data processing: generic control systems or specific application

Generic control system, apparatus or process

Sequential or selective

C700S012000, C700S039000, C700S040000, C700S042000, C703S002000

Reexamination Certificate

active

07376470

ABSTRACT:
In a control method, when a state quantity serving as a specific reference is defined as a reference state quantity, and a state quantity which is controlled to maintain a relative quantity with respect to the reference state quantity at a specified value is defined as a follow-up state quantity, one of a plurality of control computation input values input to a controller of at least two controllers respectively forming control loops, which controls the follow-up state quantity is transformed, into an internal input value, and the internal input value is input to the controller which controls the follow-up state quantity. At least the two controllers calculate manipulated variables, respectively, and the calculated manipulated variables are output to controlled systems of corresponding control loops. The internal input value is calculated by setting the internal input value as the sum of a first element for the reference state quantity and a second element for the relative quantity, an element of the control computation input value which corresponds to the reference state quantity as the first element, and a value obtained by multiplying an element of the control computation input value which corresponds to the relative quantity as the second element. A control apparatus is also disclosed.

REFERENCES:
patent: 6430452 (2002-08-01), Feustel
patent: 6684113 (2004-01-01), Tanaka
patent: 6754542 (2004-06-01), Tanaka
patent: 2005/0033455 (2005-02-01), Kasdan et al.
patent: 10-0198056 (1999-02-01), None

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