基于混沌优化的规范化PID控制器及其应用

来源期刊：中南大学学报(自然科学版)2002年第3期

论文作者：李祥飞 邹恩 张泰山 孙克辉

文章页码：301 - 304

关键词：PID控制器;混沌优化;最优控制;水轮机组

Key words：PID controller; chaos optimization; optimization control; hydroturbine-generator set

摘    要：为了解决PID参数整定繁琐、难以达到最优状态、控制结果出现较强的振荡和大超调等问题,作者提出一种规范化PID控制器参数混沌优化方案.由于混沌运动具有遍历性、随机性等特点,它能在一定的范围内按其自身规律不重复地遍历所有状态,把混沌动力学特性与退火策略结合起来在规范化PID参数域中实现混沌优化搜索,具有更强的搜索PID参数全局最优值的能力.对水轮机调速系统进行控制仿真,结果表明:该算法能有效地实现PID参数最优整定;控制结果具有稳定、超调小、响应快、调节时间短、结构简单、容易实现的优点,为解决PID控制器参数全局最优设计提供了一种有效的方法.

Abstract: PID control has been widely applied in the industrial process control because of its robust and easy realization,but it is difficult to tune the parameters of PID controller, which often leads to oscillation and overshoot. Due to no repetition and random of chaos dynamics, the authors propose a method to search for normalization PID controller parameters based on chaotic variable and annealing strategy, which can be expected to have higher ability of searching for global op-timal PID parameters according to the performance index of control system, and the velocity of hydroturbine generator is controlled. Simulation results show that the method is efficient to realize self-tuning global optimal parameters of PID controller, which has the advantages of stability, fast response, small overshoot and short setting-time, and that its constructure is simple and parameter tuning is easy to realize.