Apparatus for tuning PID controllers in process control systems

Details Apparatus for tuning PID controllers in process control systems Apparatus for tuning PID controllers in process control systems

1983-08-29

1984-04-03

Ruggiero, Joseph F.

Boots, shoes, and leggings

318561, 364159, 364162, 364553, G05B 1302

Patent

active

044411510

ABSTRACT:
By applying to a linear, time-invariant process or system a pulse of predetermined duration instead of a step function and measuring the area enclosed by the pulse and the response curve of the process, respectively, instead of measuring the slope of a tangent line to the point of inflection of the response curve, the time constant or constants of a closed-loop (self-balancing) or open-loop (non-self-balancing) process may be accurately determined and from such time constant or constants the process may be optimally tuned according to one of the accepted tuning methods.

REFERENCES:
patent: 3109970 (1963-11-01), Smyth
patent: 3149270 (1964-09-01), Smyth et al.
patent: 3177347 (1965-04-01), Cowley
patent: 3536978 (1970-10-01), Meredith et al.
patent: 3781626 (1973-12-01), Kubo et al.
patent: 3862403 (1975-01-01), Kurihara
patent: 4096425 (1978-06-01), Brown et al.

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