一种基于线性二次最优控制的PID参数优化方法

摘要

时域分析法和频域分析法是设计控制系统的两种基本方法，对应同一物理系统，两种方法之间必然存在一定的联系。本文通过对基于时域状态空间描述的线性二次最优控制系统和基于输出反馈的频域PID控制系统的对比分析，提出一种由PID动态补偿网络实现线性二次最优控制的方法，仿真结果验证了该方法的合理性。%Time domain analysis and frequency domain analysis are the basic approaches in designing control system and they have close relationship to each other. Based on the analysis of linear quadratic optimal system and PID control system,the paper develops a method for PID parameter optimizing,which is obtained from the principles of time-domain designs and optimization for linear quadratic optimal control system. The simulation results verified the validity of the scheme.