关键词: 粒子群, 分数阶控制器, 双闭环直流调速, 鲁棒性

Abstract: In order to achieve the purpose of high-performance control, fractional order PIλ controller is applied and implemented for DC double closed-loop control system. The optimal Proportional-Integral and fractional Proportional-Integral（PI/PIλ） controller parameters are turned by Particle Swarm Optimization（PSO） method. This paper emphasizes response speed and stability, in order to further analyze robustness of optimally designed PI and PIλ controllers, DC forward path gain increases up to 60%. Under the same conditions, simulation comparisons between the optimized PI and PIλ are presented to show that the designed fractional order PIλ controller outperforms the conventional optimal PI controller in response speed, stability and robustness performance.

Key words: Particle Swarm Optimization（PSO）, fractional order controller, DC double closed-loop control system, robustness