Internal Model Controller with automatically correcting gain of

Details Internal Model Controller with automatically correcting gain of Internal Model Controller with automatically correcting gain of

1994-12-20

1996-07-16

Ruggiero, Joseph

Boots, shoes, and leggings

364157, 364158, G05B 1304

Patent

active

055373100

ABSTRACT:
An internal model control (IMC) automatically corrects the gain of the internal model control when the settings in the internal model are improper. The controller calculates and outputs a manipulated variable according to an IMC control algorithm, and an adaptive tuning section adaptively tunes the model gain of an internal model such that change rates of the controlled variable and the reference controlled variable used in said IMC section become the same value during a control response period in a transient state. When a transient state of control is detected, a transient state detection signal is output and a response start region is detected. The change rates of the controlled variable and the reference controlled variable in this response start region are determined. The corrected gain of the internal model is calculated from the change rates of the controlled variable and the reference controlled variable in the response start region. The corrected gain is then output to an internal model storage section, thereby correcting the gain of the internal model.

REFERENCES:
patent: 4368510 (1983-01-01), Anderson
patent: 5319539 (1994-06-01), Shinskey
patent: 5347446 (1994-09-01), Iino et al.
patent: 5442544 (1995-08-01), Jeliner
`A New Automated Optimal Tuning Strategy for a PID Controller` L. S. Cheung (auth); ISA Transactions-vol. 27 (1988).
Manfred Morari and Evanghelos Zafiriou, "ROBUST PROCESS CONTROL/ Chapter 3 and 4", pp. 39-83 and title page, Prentice-Hall; Date unknown.

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