基于改进遗传算法的PID参数整定策略

针对简单遗传算法（SGA）收敛速度慢、易于早熟等缺点，在前人研究成果的基础上，将传统的轮盘赌选择法与最优保留策略结合起来，并采用改进的自适应交叉算子和自适应变异算子，结合兼顾性能指标和响应过程平衡的适配函数，以多种改进方式相结合的遗传算法对PID参数进行迭代寻优整定。仿真试验结果表明改进的遗传算法是一种简单高效的寻优算法，与传统的寻优方法相比可明显地改善控制系统的动态性能。

A Strategy of PID Parameter Tuning Based on Improved GA

A strategy of traditional roulette wheel selection and optimum reserved tactics for iterative optimized tuning of PID parameters was developed in this paper on the foundation of forefather's research.This method can be used to overcome the shortcomings of slow-convergence and easy-premature of simple genetic algorithms(SGA).It makes use of the improved adaptive crossover operator and the adaptive mutation operator,and combines with a kind of fitness function that considers the balance of the performance tar...