Control system for plant

Details Control system for plant Control system for plant

2011-04-12

2011-04-12

Kwon, John T (Department: 3747)

Internal-combustion engines

Charge forming device

Including exhaust gas condition responsive means

C123S090150, C123S090110

Reexamination Certificate

active

07921832

ABSTRACT:
A control system for a plant can include a feedback control input which can be calculated so that a controlled output of said plant coincides with a target value. A hold control input can be calculated according to an operating condition of said plant. A control input to said plant is set to the feedback control input when a control deviation between the controlled output and a target value is greater than a predetermined threshold value, and the control input is set to the hold control input when the control deviation is equal to or less than the predetermined threshold value. The feedback control input is made to gradually approach to or coincide with the hold control input when the control input is set to the hold control input.

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