Automatic identification system for self tuning process controll

Details Automatic identification system for self tuning process controll Automatic identification system for self tuning process controll

1980-10-20

1983-01-11

Ruggiero, Joseph F.

Boots, shoes, and leggings

318561, 364157, 364158, 364162, G05B 1304, G05B 1702

Patent

active

043685102

ABSTRACT:
A process for automatically identifying the parameters of a controller which controls a process and a process model which includes changing alternately the set point for the process by a predetermined value above and below the desired set point of the process which is continued until the parameters of the process model describe the process.
The apparatus includes means for creating a cycle that has a plurality of steps, means for comparing a proportional amount of a set point change with a corresponding value of the process during one of the cycles steps during which the parameters are identified, means for repeating the cycle until the change in the values of the parameters between adjacent cycle is less than a predetermined amount, and means for terminating the cycle repetition if the parameter change between adjacent cycles is less than the predetermined amount.

REFERENCES:
patent: 3221230 (1965-11-01), Osburn
patent: 3534400 (1970-10-01), Dahlin
patent: 3758762 (1973-09-01), Littman et al.
patent: 3767900 (1973-10-01), Chao et al.
patent: 3876871 (1975-04-01), Sinner
patent: 4054780 (1977-10-01), Bartley et al.
patent: 4214300 (1980-07-01), Barlow et al.
Dahlin-"Designing and Tuning Digital Controllers"-Instruments and Control Systems, Jun. 1968-vol. 2, No. 6,-pp. 77-83.
Touchstone et al.-"Adaptive Control Through Instrumental-Variable Estimation of Discrete Model Parameters"-Proc. of ISA/77-Anaheim, CA-May 2-5, 1977-pp. 57-64.

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