Genetic Algorithm PID Control of Second-Order Analog Circuit System

Abstract

This paper is a practical paper, mainly focusing on the application of genetic algorithm in control. The controlled system is a second-order analog circuit system. This second-order analog circuit system is implemented with an operational amplifier and has the transfer function characteristics of a second-order system. Many control systems can be reduced to the model of the second-order system, so the control implementation of this second-order analog circuit system has its applications. Genetic algorithms were originally developed from some phenomena in genetic biology, including inheritance, mutation, natural selection, and hybridization. The main control law is to use PID control, and the three parameters of the controller are adjusted by the genetic algorithm. This framework has the advantage of hierarchy, because the low-level control uses PID control, so it can ensure that the system is controllable. As for high-level parameter tuning, genetic algorithm are used to ensure optimal control.