PID Control Algorithm Based on Genetic Algorithm and its Application in Electric Cylinder Control

Geng Zhang, Xiansheng Gong and Xirui Chen
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Geng Zhang: College of Mechanical Engineering, Chongqing University, Chongqing, China & College of Information and Electrical Engineering, Chongqing Radio and TV University, Chongqing, China
Xiansheng Gong: College of Mechanical Engineering, Chongqing University, Chongqing, China & The State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing, China
Xirui Chen: College of Mechanical Engineering, Chongqing Technology and Business University, Chongqing, China

International Journal of Information Technology and Web Engineering (IJITWE), 2017, vol. 12, issue 3, 51-61

Abstract: The traditional PID controller is simple in principle, easy to use, stable and reliable, and it is still widely used in the control field. However, for many nonlinear and lagging objects, the parameter tuning of PID controller is very important. Genetic algorithm provides a new way to optimize the parameters of PID. It uses simple coding techniques and propagation mechanisms to express complex phenomena, which is not restricted by the restriction of the search space. In this paper, the global optimization of genetic algorithm is used to optimize the parameters of PID, which can improve the performance and adaptive capability of PID controller. The mathematical model of the electric cylinder system is established, and the PID controller based on genetic algorithm is used to control the system. The simulation results verify the effectiveness of the proposed control algorithm.

Date: 2017
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