scholarly journals Using time delay compensation scheme in dynamic output feedback controller for networked control systems

2014 ◽  
Vol 63 (9) ◽  
pp. 090205
Author(s):  
An Bao-Ran ◽  
Liu Guo-Ping
Keyword(s):  
Time Delay ◽  
Control Systems ◽  
Output Feedback ◽  
Networked Control Systems ◽  
Dynamic Output Feedback ◽  
Compensation Scheme ◽  
Delay Compensation ◽  
Output Feedback Controller ◽  
Dynamic Output Feedback Controller ◽  
Time Delay Compensation

scholarly journals Comprehensive Control of Networked Control Systems with Multistep Delay

2014 ◽  
Vol 2014 ◽  
pp. 1-8
Author(s):  
Jie Jiang ◽  
Changlin Ma
Keyword(s):  
Time Delay ◽  
Control Systems ◽  
Networked Control Systems ◽  
Sampling Period ◽  
Networked Control ◽  
Control Methods ◽  
Delay Compensation ◽  
Linear Quadratic ◽  
Long Time ◽  
Time Delay Compensation

In networked control systems with multi-step delay, long time-delay causes vacant sampling and controller design difficulty. In order to solve the above problems, comprehensive control methods are proposed in this paper. Time-delay compensation control and linear-quadratic-Guassian (LQG) optimal control are adopted and the systems switch different controllers between two different states. LQG optimal controller is used with probability1-αin normal state, which is shown to render the systems mean square exponentially stable. Time-delay compensation controller is used with probabilityαin abnormal state to compensate vacant sampling and long time-delay. In addition, a buffer window is established at the actuator of the systems to store some history control inputs which are used to estimate the control state of present sampling period under the vacant sampling cases. The comprehensive control methods simplify control design which is easier to be implemented in engineering. The performance of the systems is also improved. Simulation results verify the validity of the proposed theory.

Robust H∞ Control for Singular Networked Control Systems with Uncertain Time-Delay

2013 ◽  
Vol 748 ◽  
pp. 789-792
Author(s):  
Jun Ru Wang ◽  
Hui Jiao Wang ◽  
Bo Zhou
Keyword(s):  
Time Delay ◽  
Asymptotic Stability ◽  
Linear System ◽  
Control Systems ◽  
Output Feedback ◽  
Networked Control Systems ◽  
Networked Control ◽  
Sufficient Condition ◽  
Output Feedback Controller ◽  
Uncertain Time

For singular networked control systems (SNCSs) with uncertain time-delay, the problem of robust control is studied.The SNCS can be modeled as a class of uncertain discrete linear system with uncertain delay. Sufficient condition, which ensures the resulted loop-system to be asymptotic stability with performance index , is derived.Furthermore, the explicit formation of dynamical output feedback controller is also presented.Finally, a numerical example is given to show the effective of the presented method.

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