基于CPSO的PID算法在LLC变换器控制中的应用

APPLICATION OF CPSO BASED PID ALGORITHM TO LLC RESONANT CONVERTER CONTROL

在LLC谐振变换器控制系统中,由于PID控制器参数的整定直接影响控制系统的性能,本文利用混沌粒子群优化算法对变换器的数字PID控制器参数进行了整定。并利用MATLAB软件进行建模仿真实验,最后通过分析几种算法整定PID参数的结果,结果表明该算法操作简单,响应速度快,调节时间短,无超调,其控制品质明显优于遗传算法和标准粒子群算法,具有更好的优化效果。

In the LLC resonant converter control,the setting of PID controller parameters directly affects the effect of the control system. In this paper,Chaos Particle Swarm Optimization( CPSO) was used for the setting of the digital converter PID controller parameters. Then we use the MATLAB software for modeling and simulation experiments. At last,we analyze the results of several tuning PID algorithm. The experiment results show that :the CPSO algorithm is simple and have some advantage like fastest response,short settling time and no overshoot,its control quality is much better than GA and PSO,it have a even better optimization results.