【作者】 何芳； 佟为明； 王强；

【Author】 He Fang~1 Tong Weiming~1 Wang Qiang~2 (1 School of Electrical Engineering and Automation,Harbin Institute of Technology Harbin 150001 China; 2 School of Mechanical Engineering University of Jinan Jinan 250022 China)

【机构】 哈尔滨工业大学电气工程及自动化学院； 济南大学机械工程学院；

【摘要】 Smith补偿控制是一种解决网络控制系统的时延补偿问题可行的控制策略,但采用Smith补偿控制设计时,要求明确被控对象的精确的数学模型,因此对网络控制系统只使用Smith控制还不能达到理想的控制效果。因为Fuzzy控制的主要优点是可以不依赖于被控对象的数学模型,所以本文提出了采用Smith与Fuzzy联合设计的控制策略去补偿网络控制系统的时延,使网络控制系统获得更好的控制性能。基于Matlab/Simulink,网络控制系统仿真模型被建立。仿真实验结果表明,采用Smith与Fuzzy联合控制这种设计方法比单一地采用Fuzzy控制或Smith补偿控制,可以更有效地抑制网络时延对网络控制系统的控制性能带来的不良影响。更多还原

【Abstract】 Smith compensation control is a feasible control strategy to compensate the delay of networked control system.However,in design of Smith compensation control,the plant is required with a clear precision mathematical model.Therefore,it can not achieve the desired effect of control by alone use of Smith for networked control system.As the main advantage of fuzzy control is not dependent on the mathematical model of the plant,a control strategy is proposed using Smith and Fuzzy co-designed to compensate the delay of networked control system in this paper,which can make system obtain better control performance.Based on Matlab/Simulink,simulation model of networked control system is set up.The simulation results show that the joint control of Smith and Fuzzy is better than alone use of Smith compensation control or Fuzzy control,which can better restrain the adverse effects brought by the time delay of networked control system.更多还原