基于滑模控制的液位系统研究

A Study Of Liquid-Level System Based On Sliding Control

探讨了滑模变结构控制的设计原理,设计了一种滑模控制器,实现了单输入单输出系统的控制,并利用MAT-LAB/SIMULINK搭建系统进行仿真,研究了基于滑模变结构控制的三容水箱液位高度控制器对于系统输入的跟踪效果.并与传统PID控制相比较,体现了滑模变结构控制的动态、稳态品质良好,对输入信号跟踪效果理想,鲁棒性好,比传统PID控制更为优越.

This paper discusses a principle in designing sliding mode variable structure controller. A sliding mode controller is designed to carry out the SISO system. Using the MATLAB ／SIMULINK simulation package, we perform investigation into the result that the fluid position altitude of the three - tank water level control system following the system input which based on sliding mode controller. Compared with traditional PID controller, it shows better dynamic and static quality of the sliding mode variable structure controller. Also it is good at tracking input signals and has excellent robustness which takes far exceed precedence of the traditional PID controller.