Title :
Improved control scheme with online delay evaluation for networked control systems
Author :
Zhen, Wei ; Chang-hong, Li ; Jian-ying, Xie
Author_Institution :
Dept. of Autom., Shanghai Jiao Tong Univ., China
Abstract :
Presents an evaluation approach of time delays for networked control systems, which characterizes the time delays online without any synchronized clock in the network and any assumptions of time delays. With this approach, an improved scheme based on optimal LQG control is designed to achieve desired performance despite the uncertain delays in the system. The experimental results illustrate the effectiveness of the proposed control design and satisfactory performance of the closed-loop system.
Keywords :
closed loop systems; control system synthesis; controller area networks; delays; field buses; linear quadratic Gaussian control; closed-loop system; networked control systems; online delay evaluation; optimal LQG control; time delays; uncertain delays; Actuators; Automatic control; Automation; Communication system control; Control design; Control systems; Delay effects; Networked control systems; Optimal control; Synchronization;
Conference_Titel :
Intelligent Control and Automation, 2002. Proceedings of the 4th World Congress on
Print_ISBN :
0-7803-7268-9
DOI :
10.1109/WCICA.2002.1020795
