状态反馈和PI综合控制的水轮机非最小相位系统研究

Research on state feedback and PI integrated control of non-minimum phase systems in hydraulic turbines

本文对水轮机典型工况下的非最小相位系统进行研究,采用全状态反馈和PI控制结合的方法对水轮机非最小相位系统进行分析控制,应用simulink软件搭建系统模型,并进行阶跃响应和负荷扰动实验。通过多次仿真实验,得出整定PI参数的简单方法。研究结果表明,先对原系统配置期望极点,再对新系统应用PI控制器,选取合适的参数,可以充分发挥两种控制器的优点,并且达到较好的控制效果。

This paper investigates non-minimum phase systems in typical operating conditions of hydraulic turbines.It analyzes and controls the non-minimum phase systems in hydraulic turbines using a combination of full state feedback and PI control.The system model is constructed using Simulink software,and step response and load disturbance experiments are conducted.Through multiple simulation experiments,a simple method for tuning the PI parameters is derived.The research results indicate that configuring desired poles for the original system first and then applying a PI controller to the new system with appropriate parameters can fully leverage the advantages of both controllers and achieve a satisfactory control effect.