摘要
针对双容水箱液位控制系统存在时变、非线性和滞后等不确定因素,设计了一种基于滑模控制的方案,解决了传统PID控制在精准高效方面存在的缺陷。通过对双容水箱的分析,先后建立传递函数及状态空间方程两种模型,设计了相应的滑模面和趋近率,从而实现对双容水箱液位的变结构非线性控制。仿真结果表明,控制器大大降低了系统的超调量和调整时间,验证了所提方案的优越性,滑模变结构控制器具有较好的自适应性和较强的抗干扰能力。
In view of the uncertainties such as time-varying state, nonlinearity and hysteresis of the double-tank water liquid level system, a design scheme based on sliding mode control is proposed, which solves the defects in the accuracy and efficiency in terms of traditional PID control method. Through the analysis of the water double-tank, two models of transfer function and state space equation are established successively, and the corresponding sliding mode surface and approaching rate are designed so as to realize the variable structure nonlinear control of double-tank water level. The simulation results show that the designed controller in this paper greatly reduces the overshoot and adjustment time of the system by the simulation results. And the superiority of the proposed scheme is verified. Finally, it includes that the variable structure controller with sliding mode has good adaptability and strong anti-interference ability.
作者
周依涛
郑炜炀
项思哲
高金凤
Zhou Yitao;Zheng Weiyang;Xiang Sizhe;Gao Jinfeng(Faculty of Mechanical Engineering and Automation,Zhejiang Sci-Tech University,Hangzhou 310018,China)
出处
《国外电子测量技术》
北大核心
2021年第6期54-58,共5页
Foreign Electronic Measurement Technology
基金
浙江省自然科学基金(LY20F030015)项目资助。
作者简介
周依涛,本科在读,主要研究方向为自动控制技术。E-mail:zhou.y.t@foxmail.com;郑炜炀,本科在读,主要研究方向为图像处理与识别。E-mail:2018330301105@mails.zstu.edu.cn;项思哲,本科在读,主要研究方向为自动控制技术、图像处理与识别。E-mail:2018330301166@mails.zstu.edu.cn;高金凤,博士,教授,主要研究方向为先进控制理论与故障诊断技术。E-mail:jfgao@zstu.edu.cn。
