Journal of Applied Sciences ›› 2017, Vol. 35 ›› Issue (5): 667-674.doi: 10.3969/j.issn.0255-8297.2017.05.012

• Control and System • Previous Articles    

PID Parameter Optimization Based on Improved Particle Swarm Optimization Algorithm

JIANG Chang-hong, ZHANG Yong-heng, WANG Sheng-hui   

  1. School of Electrical and Electronic Engineering, Changchun University of Technology, Changchun 130012, China
  • Received:2016-01-31 Revised:2016-03-03 Online:2017-09-30 Published:2017-09-30

Abstract:

PID parameter optimization is a hot topic in control engineering. An improved particle swarm optimization (PSO) algorithm is proposed to optimize PID parameters. PID parameters are selected and the system performance is improved. The factors of evolution speed and aggregation degree of the swarm are introduced to the algorithm to improve the weight to improve the velocity update formula. A flying time factor is then introduced to improve the location update formula. Advantage of the algorithm is shown by three typical functions, indicating improvement of convergence speed and search efciency. A typical second order controlled model is selected as an object for research, and results of the algorithm are compared with other PSO algorithms. Experiments show that the optimized PID parameters obtained by using the improved PSO algorithm can achieve good control performance.

Key words: flying time factor, improved particle swarm optimization (PSO) algorithm, weight, PID parameter optimization

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