Review of PID control design and tuning methods

Abstract

Owing to the fact that PID controllers have a simple and fixed form and good robustness, they are widely used in industrial production. However, the complexity and non-linearity of control systems affect the use of a traditional PID controller. Therefore, how to design a stable PID controller that does not require an accurate mathematical model or how to adjust the parameters of the PID controller have become hot topics of research today and in the future. PID controllers are outlined in this study, such as position PID controllers, incremental PID controllers, differential prior PID controllers, fuzzy PID controllers. Besides, two different PID controller rectification methods are described: the model-based parameter self-tuning method and the rule-based self-tuning method. What is more, this paper also compares these PID controllers, and clarifies the advantages and disadvantages of each PID controller. And at the end, it predicts the prospect of PID controllers and PID controller rectification methods. PID has a great development prospect, and its future research direction is not only to study new algorithms, but also needs to study how to combine the excellent existing PID controllers to make up for their shortcomings.