Adaptive tuning of PID controller using template surfaces

摘要

Adaptive tuning method used in a PID industrial controller is described. The purpose is generally similar as in the well-known Foxboro EXACT algorithm, i.e. find the settings which yield transients having prescribed overshoot and short settling time. Method employed here may be called "walk on template surfaces". The surfaces are overshoot and frequency functions of controller settings. They have been obtained by Matlab simulations from a template plant (inertia with delay) and found suitable for typical industrial processes.