Title :
Observer-based compensator design for networked control systems with long time delays
Author :
Li, Shanbin ; Wang, Zhi ; Sun, Youxian
Author_Institution :
Nat. Lab. of Ind. Control Technol., Zhejiang Univ., Hangzhou, China
Abstract :
Network-induced delays in the networked control systems (NCS) are inevitable and have a significant effect on system performance. In this paper, time-varying delays are regarded as the sum of the mean delays and uncertain delays. Furthermore, NCS with long time delays is modelled as a discrete-time model with structural uncertainty for its time-varying network-induced delays. Based on the model, a new control law via an iterative linear matrix inequality (LMI) approach is presented which can stabilize the closed-loop system. Theoretical analysis and simulation results compared to some existing schemes show that the control strategy presented in this paper is effective and feasible.
Keywords :
centralised control; closed loop systems; delay systems; discrete time systems; iterative methods; linear matrix inequalities; observers; time-varying systems; LMI; NCS; closed-loop system; discrete-time model; iterative linear matrix inequality; network-induced delay; networked control system; observer-based compensator; time-varying delay; uncertain delay; Actuators; Aircraft manufacture; Communication system control; Control systems; Delay effects; Delay systems; Networked control systems; Stability analysis; State estimation; Uncertainty;
Conference_Titel :
Industrial Electronics Society, 2004. IECON 2004. 30th Annual Conference of IEEE
Print_ISBN :
0-7803-8730-9
DOI :
10.1109/IECON.2004.1433392
