H∞ control for Networked Control Systems in Presence of Random Network Delay and Data Dropout

2006 ◽  
Author(s):  
Yuanqing Xia ◽  
G.P. Liu ◽  
D. Rees
Keyword(s):  
Control Systems ◽  
Networked Control Systems ◽  
Random Network ◽  
Networked Control ◽  
Network Delay ◽  
Data Dropout

Application of GPC Algorithm Based on Network Delay

2012 ◽  
Vol 546-547 ◽  
pp. 972-976
Author(s):  
Zhen Feng ◽  
Jia Liu ◽  
Jing Jing Xiong
Keyword(s):  
Control Systems ◽  
Predictive Control ◽  
Networked Control Systems ◽  
Network Control ◽  
Networked Control ◽  
Effective Characteristics ◽  
Feedback Channel ◽  
Network Delay ◽  
The Stability ◽  
Forward Channel

Aiming at the problem of the network delay, this paper presents a kind of application of generalized predictive control algorithm in networked control systems. The algorithm applys future control signal predicted by MPC (model predictive control) to compensating for the delay or interruption in forward channel, and the delay in feedback channel with a predictor at the same time. The paper describes the control characteristic and discusses the stability of network control system, and verificates the algorithm's feasible and effective characteristics in networked control systems through the simulation.

Performance Compensation of Networked Control Systems with Network Delay

2011 ◽  
Vol 268-270 ◽  
pp. 793-797
Author(s):  
Jie Wang ◽  
Song Gao ◽  
Yong Yang
Keyword(s):  
Control Systems ◽  
System Performance ◽  
Networked Control Systems ◽  
Networked Control System ◽  
Networked Control ◽  
Design Stage ◽  
Control Algorithms ◽  
Network Delay ◽  
Traffic Conditions ◽  
Network Controller

The networked control system typically introduces network delay that have not been considered at the design stage. As a consequence, the system performance is degraded with respect to the expected response. This thesis introduces a methodology to apply external gain assist networked control systems. The proposed methodology uses externalgain to modify the controller output with respect to the current network traffic conditions in order to enable an existing controller for networked control systems and compensate the performance degradetion induced by network delay. This methodology can change existing traditional controller directly to network controller and not modify the original control algorithms.

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