System and method for automatically tuning a process controller

Details System and method for automatically tuning a process controller System and method for automatically tuning a process controller

1993-05-28

1995-09-26

Ruggiero, Joseph

Boots, shoes, and leggings

318561, 364162, 364177, G05B 1300, G05B 1142

Patent

active

054539250

ABSTRACT:
A system and method for automatically tuning a process controller used to control an industrial process, or the like. The controller is removed from closed-loop control of a process under control, and a signal is applied to the process under control to cause the process to undergo controlled self-oscillation. A first portion of the self-oscillation procedure is used to determine a Time Delay characteristic of the process under control, and a subsequent portion of the self-oscillation procedure as used to calculate an Ultimate Gain characteristic and an Ultimate Period characteristic of the process under control. These three characteristics are then used to calculate control parameters which are used to tune the controller. After tuning, the controller is placed back into a closed-loop with the process under control.

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