Method and apparatus for generating an optimal gain of process c

Details Method and apparatus for generating an optimal gain of process c Method and apparatus for generating an optimal gain of process c

1992-05-27

1994-06-07

Smith, Jerry

Boots, shoes, and leggings

364162, G05B 1302, G05B 1300

Patent

active

053195396

ABSTRACT:
An improved system for tuning process control equipment applies a load change of amplitude .delta.q to the process to effect a change in it and, therefore, in the controlled variable. Monitoring the response of the controller to that change, the system identifies an observed overshoot, OVS.sub.o, in the manipulated variable signal. From that overshoot signal and a predetermined theoretical overshoot signal, OVS.sub..tau., the system generates an optimum gain, K.sub.opt, as a function of the mathematical expression K.sub.opt =K*(1+OVS.sub..tau.)/(1+OVS.sub.o), where K is the current gain of the automatic control subsection, OVS.sub.o is the observed overshoot, and OVS.sub..tau. is the predetermined overshoot.

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