scholarly journals Towards Quality-of-Service Control of Networked Control Systems: A Switched Time Delay Systems Approach

2006 ◽  
Author(s):  
Chih-chung Chen ◽  
Sandra Hirche ◽  
Martin Buss
Keyword(s):  
Quality Of Service ◽  
Time Delay ◽  
Control Systems ◽  
Systems Approach ◽  
Networked Control Systems ◽  
Networked Control ◽  
Delay Systems ◽  
Time Delay Systems ◽  
Service Control

scholarly journals Fault Detection for Wireless Networked Control Systems with Stochastic Switching Topology and Time Delay

2014 ◽  
Vol 2014 ◽  
pp. 1-13
Author(s):  
Pengfei Guo ◽  
Jie Zhang ◽  
Hamid Reza Karimi ◽  
Yurong Liu ◽  
Yunji Wang ◽  
...  
Keyword(s):  
Time Delay ◽  
Fault Detection ◽  
Control Systems ◽  
Networked Control Systems ◽  
Sufficient Conditions ◽  
Networked Control ◽  
Delay Systems ◽  
Switching Topology ◽  
Linear Matrix ◽  
System States

This paper deals with the fault detection problem for a class of discrete-time wireless networked control systems described by switching topology with uncertainties and disturbances. System states of each individual node are affected not only by its own measurements, but also by other nodes’ measurements according to a certain network topology. As the topology of system can be switched in a stochastic way, we aim to designH∞fault detection observers for nodes in the dynamic time-delay systems. By using the Lyapunov method and stochastic analysis techniques, sufficient conditions are acquired to guarantee the existence of the filters satisfying theH∞performance constraint, and observer gains are derived by solving linear matrix inequalities. Finally, an illustrated example is provided to verify the effectiveness of the theoretical results.

Controllability of Multi-Rate Networked Control Systems with Short Time Delay

2011 ◽  
Vol 219-220 ◽  
pp. 855-859 ◽  
Author(s):  
Qi Xin Zhu
Keyword(s):  
Time Delay ◽  
Control Systems ◽  
Stochastic Systems ◽  
Systems Approach ◽  
Networked Control Systems ◽  
Mathematic Model ◽  
Networked Control ◽  
Control Loops ◽  
Short Time ◽  
Short Time Delay

Feedback control systems wherein the control loops are closed through a real-time network are called networked control systems. Multi-rate networked control systems mean the sampling rates of notes in networked control systems are not the same. The controllability of multi-rate networked control systems are investigated in this paper for the first time. Based on the mathematic model of multi-rate networked control systems with short time delay, some sufficient or necessary conditions for controllability of multi-rate networked control systems are got using stochastic systems approach.

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