Fractional delay compensated discrete-time SMC for networked control system

Autor: D.H. Shah, A.J. Mehta
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: Digital Communications and Networks, Vol 3, Iss 2, Pp 112-117 (2017)
Druh dokumentu: article
ISSN: 2352-8648
DOI: 10.1016/j.dcan.2016.09.006
Popis: Time-varying network induced delay in the communication channel severely affects the performance of closed loop network control systems. In this paper, a novel idea of compensating the fractional time varying communication delay in the sliding surface is presented. The fractional time delay in the sensor to controller and controller to actuator channel is approximated using the Thiran approximation technique to design the sliding surface. A discrete-time sliding mode control law is derived using the proposed surface that compensates fractional time delay in sensor to controller and controller to actuator channels for uncertain network control systems. The sufficient condition for closed loop stability of the system is derived using the Lyapunov function. The efficacy of the proposed strategy is supported by the simulation results.
Databáze: Directory of Open Access Journals