一种改进的PID参数整定的研究及仿真

传统PID控制由于依赖于对象的数学模型和控制参数难以精确整定,使其很难适应具有非线性系统的控制。针对非线性系统,本文提出了一种结合免疫的思想改进PSO的PID的控制算法,从而解决PID控制的鲁棒性差及受模型限制的问题,并结合了Matlab强大的矩阵计算和系统仿真功能,对文中实例的PID参数进行了优化整定。仿真结果表明,该控制算法有较强的抗干扰和适应参数变化及鲁棒性和自适应性。

A Kind of Research and Simulation Based on the Improved PID Parameter Tuning

For the traditional PID control depends on the mathematical model of the object,and it＇s difficult to tune the control parameter accurately,the traditional PID control is difficult to adapt to the control of a non-linear system.This paper proposed a PID control algorithm,in which PSO is improved by the method with immunization for non-linear systems.The problems of PID control which is its poor robustness and limitedness of model are resolved by the improved algorithm.The instance of the PID parameters of this paper is optimizd tuned by Matlab.The simulation results show that the improved control algorithm has strong anti-interference、adapt to parameter changes、robustness and adaptability.