中文说明：应用MATILAB编程实现了遗传算法整定PID控制器参数，并应用于一阶延迟模型的控制，并进行了阶跃响应仿真。
English Description：
Matlab is used to realize the parameter tuning of PID controller based on genetic algorithm, which is applied to the control of the first-order delay model, and the step response simulation is carried out.