基于自适应DE算法的电子膨胀阀PID控制器参数整定

PID Controller Tuning for Electronic Expansion Valves Based on Self-adaptive Differential Evolution Algorithm

针对标准DE算法过早收敛容易产生早熟的问题,引入自适应变异算子的计算方法,对标准DE算法进行优化,并将改进的DE算法应用于电子膨胀阀PID控制器参数的在线整定。仿真实验结果表明:使用改进的自适应DE算法整定PID控制器参数的电子膨胀阀,能使系统更快、更稳定地达到过热度期望值,避免了早熟现象。

Considering the premature convergence of standard differential evolution( DE) algorithm,a self-adaptive mutation operator was applied to optimize this standard DE algorithm and then having this improved DE algorithm applied to the on-line setting of EEV PID controller parameters. The simulation results show that this improved DE algorithm can make the system reach the expected degree of superheat faster and stably against any premature.