MULTIVARIABLE PROCESS CONTROL SYSTEM

Japanese Patent JP3279250

B2

PROBLEM TO BE SOLVED: To derive a manipulated variable updated value meeting operation restriction conditions of a control variable by determining the manipulated variable updated value from a predicted value of a controlled variable so that the operation restriction conditions are met.
SOLUTION: A control database 11 stores model data including a mathematical expression model representing response characteristics of a process 2 to be controlled and control data including adjustment parameters of model prediction control. A predicted value calculation part 12 predicts a future response of the process 2 to be controlled according to the process data of the process 2 to be controlled and the model data. An evaluation function setting part 13 derives an evaluation function of model prediction control regarding the manipulated variable updated value according to the prediction result of the process. A restriction condition selection setting part 14 compares the prediction result of the process with the operation restriction conditions to derive a search range of the manipulated variable updated value. A manipulated variable calculation part 15 calculates the manipulated variable updated value by numeral optimization from the evaluation function and the search range of the manipulated variable updated value.

JPS5987515

SERVO DEVICE

Katsuyuki Suzuki
Shinichiro Nishida
Kazuhiko Okamoto

JP9295098A

April 30, 2002

April 06, 1998

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株式会社日立製作所

G05B11/32; G05B13/02; G05B13/04; (IPC1-7): G05B13/02; G05B11/32; G05B13/04

JP103302A
JP64110A

Yasuo Sakuta

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