H∞ Controller Design of Networked Control Systems with Markov Packet Dropouts

2013 ◽  
Vol 43 (3) ◽  
pp. 689-697 ◽  
Author(s):  
Dong Wang ◽  
Jianliang Wang ◽  
Wei Wang
Keyword(s):  
Control Systems ◽  
Controller Design ◽  
Networked Control Systems ◽  
Networked Control ◽  
Packet Dropouts

scholarly journals Modeling and Output Feedback Control of Networked Control Systems with Both Time Delays; and Packet Dropouts

2013 ◽  
Vol 2013 ◽  
pp. 1-11 ◽  
Author(s):  
Li Qiu ◽  
Qin Luo ◽  
Shanbin Li ◽  
Bugong Xu
Keyword(s):  
Control Systems ◽  
Output Feedback ◽  
Time Delays ◽  
Controller Design ◽  
Networked Control Systems ◽  
Feedback Controller ◽  
Networked Control ◽  
Random Time ◽  
Packet Dropouts ◽  
Output Feedback Controller

This paper is concerned with the problem of modeling and output feedback controller design for a class of discrete-time networked control systems (NCSs) with time delays and packet dropouts. A Markovian jumping method is proposed to deal with random time delays and packet dropouts. Different from the previous studies on the issue, the characteristics of networked communication delays and packet dropouts can be truly reflected by the unified model; namely, both sensor-to-controller (S-C) and controller-to-actuator (C-A) time delays, and packet dropouts are modeled and their history behavior is described by multiple Markov chains. The resulting closed-loop system is described by a new Markovian jump linear system (MJLS) with Markov delays model. Based on Lyapunov stability theory and linear matrix inequality (LMI) method, sufficient conditions of the stochastic stability and output feedback controller design method for NCSs with random time delays and packet dropouts are presented. A numerical example is given to illustrate the effectiveness of the proposed method.

scholarly journals Active-Varying Sampling-Based Fault Detection Filter Design for Networked Control Systems

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Yu-Long Wang ◽  
Tian-Bao Wang ◽  
Wei-Wei Che
Keyword(s):  
Fault Detection ◽  
Control Systems ◽  
Networked Control Systems ◽  
Filter Design ◽  
Sampling Period ◽  
Networked Control ◽  
Packet Dropouts ◽  
Fault Detection Filter ◽  
Simulation Results ◽  
Detection Filter

This paper is concerned with fault detection filter design for continuous-time networked control systems considering packet dropouts and network-induced delays. The active-varying sampling period method is introduced to establish a new discretized model for the considered networked control systems. The mutually exclusive distribution characteristic of packet dropouts and network-induced delays is made full use of to derive less conservative fault detection filter design criteria. Compared with the fault detection filter design adopting a constant sampling period, the proposed active-varying sampling-based fault detection filter design can improve the sensitivity of the residual signal to faults and shorten the needed time for fault detection. The simulation results illustrate the merits and effectiveness of the proposed fault detection filter design.

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