【作者】 张超； 鲁照权； 丁飞； 胡多根；

【Author】 Zhang Chao Lu Zhaoquan Ding Fei Hu Duogen (School of Electrical Engineering and Automation Hefei University of Technology Hefei 230009 China)

【机构】 合肥工业大学电气与自动化工程学院；

【摘要】 传统控制系统的点对点结构正在被网络控制系统(NCS)取代。NCS由于资源共享、分布式结构、连接电缆少、造价低、维护方便等优势,已迅速地应用于各种系统和远程控制领域。由于信号通过网络传输存在时延、拥塞和丢包等问题,基于信号无时延传输和调节等条件的传统控制理论已不再适用于网络控制系统。本文介绍了网络时延产生的原因及表示方法,概述了增广离散时间模型法、摄动法、鲁棒控制法、模糊逻辑调节法、队列法、采样时间调度法、模型控制法、随机最优控制法、混杂系统法、滑模控制法等网络时延控制方法。最后给出了网络控制系统尚待解决的一些问题。更多还原

【Abstract】 Traditional point-to-point structure of control systems is being replaced by networked control systems (NCS).NCS has been rapidly applied to a variety of systems and remote control for he advantages of NCS,such as resource sharing,distributed architecture,less connecting cables,low cost,maintenance convenience,and so on. Because of the existence of signal transmission delay induced by network,congestion and packet loss and other issues,the traditional control theory based on the conditions of no transmission delay and modulation is no longer applicable to the network control system.The reasons and descriptions of time delay are introduced,and some methods are introduced too which can solve the delay,such as augmented deterministic discrete-time model, perturbation method,robust control method,fuzzy logic modulation method,queuing method,sampling time scheduling method,model-based control method,stochastic optimal control method,hybrid systems,sliding mode control method and so on.In addition,some future research points about NCS are proposed in this paper.更多还原