Process control apparatus with process dependent switching betwe

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364162, 318610, G05B 1304

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active

046412352

ABSTRACT:
The process control apparatus according to the present invention is adapted to control the process automatically in compliance with the state of the process characteristics. In the process control apparatus, when the process characteristics are found to be in a steady state, the control is performed by a first process control operational means suited for sample controlling the process according to the control constants for the first process control operational means as determined during the control of a second process control operational means, while, when the process characteristics vary frequently, the control is performed by the second process control operational means which is suited from sample controlling the process.

REFERENCES:
patent: 4214300 (1980-07-01), Barlow
patent: 4232364 (1980-11-01), Bibbero
patent: 4407013 (1983-09-01), Arcara
patent: 4451878 (1984-05-01), Shigemasa
A Link Between Science and Applications of Automatic Control, Proceedings of The Seventh Triennial World Congress of the International Federation of Automatic Control, vol. 1, Jun. 12-16, 1978, "An Adaptive Controller for Slow Processes with Variable Control Periods, pp. 461-467.

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