摘要
针对串级连续搅拌反应釜系统,提出了一种基于命令滤波技术的模糊自适应离散控制方法。利用欧拉法对串级连续搅拌反应釜系统的数学模型进行离散化处理;引入命令滤波技术应对控制器设计过程中由反步法引起的非因果问题和“计算复杂性”问题;借助模糊自适应控制和命令滤波相结合的方法简化控制器设计过程,缩减控制系统的在线计算量;利用差分李雅普诺夫函数证明闭环系统的稳定性;MATLAB仿真结果验证了所设计的控制器是有效可行的。与串级连续搅拌反应釜的现有连续控制方法相比,该控制策略具有更好的直观性和可实现性;与现有离散控制方法相比,该控制策略具有控制器结构简单、计算复杂度低、超调量小、控制输入量易实现等优点。
A fuzzy adaptive discrete control method is proposed for the cascade continuous stirred tank reactors system based on the command filtered technology.The mathematical model of the cascade continuous stirred tank reactors system is discretized by Euler method.The“complexity of computation”and noncausal problems caused by backstepping in the design process of the controller are solved through the command filtered technique.The design process of the controller is simplified by combining fuzzy adaptive control with command filtering,and the on-line calculation amount of the control system is also reduced.The stability of the closed-loop system is proved by using the difference Lyapunov function.MATLAB simulation results verify the effectiveness and feasibility of the proposed controller.Compared with the existing continuous control methods for the cascade continuous stirred tank reactors,the proposed control strategy has better intuitiveness and realizability.Compared with the existing discrete control methods,the advantages of the proposed control strategy are as follows:the controller structure is simpler,the computation complexity is lowered,the overshoot is greatly reduced,and the input control is easier to actualize.
作者
刘家硕
辛丽平
张静
刘凯
LIU Jiashuo;XIN Liping;ZHANG Jing;LIU Kai(School of Information and Control Engineering,Qingdao University of Technology,Qingdao 266525,China)
出处
《青岛理工大学学报》
CAS
2024年第5期120-131,162,共13页
Journal of Qingdao University of Technology
基金
山东省自然科学基金资助项目(ZR2021MF076)
山东省重点研发项目(2018GHY115025)
中国博士后面上项目(2018M642611)。
关键词
串级连续搅拌反应釜
离散控制
命令滤波控制
自适应反步控制
cascade continuous stirred tank reactors(CCSTR)
discrete control
command filtered control
adaptive backstepping control
