Some Current Techniques for PID Controller Design

Abstract

The proportional-integral-derivative (PID) controller structure is the most widely used one in industrial applications. The controller has three tuning parameters which are often tuned by trial and error. Over the past decades, several PID tuning methods have been developed for industrial use. Most of these tuning techniques are based on simple characterizations of stable process dynamics, for instance, the characterization by a first order model with deadtime. There is an extensive amount of literature on PID tuning methods. For a comprehensive survey on tuning methods of PID controllers, we refer the reader to [2] and the references therein. In this chapter, we give an introductory discussion of some well-known PID tuning formulas.