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Research on robust fault-tolerant control for networked control system with packet dropout

Journal of Systems Engineering and Electronics 2007年第1期18卷 76-82页

作者： Huo Zhihong Fang Huajing Dept. of Control Science and Engineering Huazhong Univ. of Science and Technology Wuhan 430074 P.R. China

A kind of networked control system with network-induced delay and packet dropout, modeled on asynchronous dynamical systems was tested, and the integrity design of the networked control system with sensors failures and actuators failures was analyzed using hybrid systems technique based on the robust fault-tolerant control theory. The parametric expression of controller is given based on the feasible solution of linear matrix inequality. The simulation results are provided on the basis of detailed theoretical analysis, which further demonstrate the validity of the proposed schema.

关键词： Networked control system (NCS) Fault-tolerant control (FTC) Asynchronous dynamical systems (ADS) integrity design Packet dropout Time delay

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Fault-Tolerant Control Research for Networked Control System under Communication Constraints

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自动化学报 2006年第5期32卷 659-666页

作者： HUO Zhi-Hong FANG Hua-Jing Department of Control Science and Engineering Huazhong University of Science and Technology Wuhan 430074

Implementing a control system over a communication network induces inevitable time delays that may degrade performance and even cause instability. One of the most effective ways to reduce the negative effect of delays on the performance of networked control system (NCS) is to reduce network traffic. In this paper, adjustable deadbands are explored as a solution to reduce network traffic in NCS. A method of fault-tolerant control of networked control system is presented, which takes into account system response as well as network traffic. The integrity design for a kind of NCS with sensor failures and actuator failures is analyzed based on robust fault-tolerant control theory and information scheduling. After detailed theoretical analysis, the paper also provides the simulation results, which further validate the proposed scheme.

关键词： Networked control system (NCS) deadbands fault-tolerant control (FTC) integrity design time delay

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维普期刊数据库

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Robust Reliability design for Nonlinear Networked Control Systems

Robust Reliability Design for Nonlinear Networked Control Sy...

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第40届中国控制会议

作者： Zhihong Huo Zhixue Zhang Chang Xu Namei Zeng College of Energy and Electrical Engineering Hohai University NR Electric Co. Ltd

Network control system（NCS） is a kind of distributed control system, which is widely used in industrial control process. The communication network is used to exchange information and control signals among various physical components of subsystems. The transmission of data and information on the communication network to achieve system control will lead to the inevitable delay of information transmission time, which will reduce the performance and even make the system *** network traffic is one of the most effective methods to reduce the impact of network control system delay on system performance. This paper discusses the adjustable deadband as a method to reduce network traffic in networked control systems,and proposes a modeling method of networked control systems with random delay and communication constraints based on quasi T-S fuzzy model. Based on robust fault-tolerant control theory and information scheduling theory, the integrity design of this kind of networked control system is analyzed. After detailed theoretical analysis, simulation results are given to furth er verify the proposed scheme.

关键词： Networked control systems(NCS) integrity design Deadband Random time delays T-S fuzzy modeling

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