Abstract
The communication delay and packet loss are two major concerns in Networked Control System as it deteriorates the performance of the system. In this paper, a novel approach for designing a discrete-time sliding mode controller using Thiran’s delay approximation is presented considering the real time networked medium and packet loss situation. Thiran’s delay approximation technique is used to compensate the controller to actuator fractional delay as well as sensor to controller fractional delay in the sliding surface. Further, the stability condition for the closed loop system with proposed controller is derived using Lyapunov function. The efficacy of the proposed strategy is endowed by simulation results that are conceded in the presence of CAN and Switched Ethernet communication medium.
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Recommended by Associate Editor Do Wan Kim under the direction of Editor Yoshito Ohta.
Dipesh Shah obtained his Bachelor’s degree in Instrumentation and Control (2007) and Master’s in Applied Instrumentation (2010) from Gujarat University, Ahmedabad, India. Currently, he is working towards his Ph.D from Gujarat Technological University, Ahmedabad, Gujarat, India. He is also serving as an Assistant Professor at Sardar Vallabhbhai Patel Institute of Technology, Vasad, Gujarat, India. His research area includes Design of robust controllers, Sliding Mode Control, Networked Control System and Industrial Communication Networks.
Axay Mehta received his Bachelor’s degree in Electrical Eng. (1996) from Gujarat University, Ahmedabad,Master’s (2002) from IIT Kharagpur and his Ph.D. (2009) from IIT Mumbai. Currently, he is working as an Associate Professor and Coordinator of Electrical Engineering at Institute of Infrastructure Technology Research and Management. Priory, he has worked at various faculty positions at various Institutions of the Gujarat state including IIT Gandhinagar and Director, Gujarat Power Engineering and Research Institute, Mehsana. His research interest are Non-linear Sliding Mode Control and its applications in Electrical Engineering, Networked Control and Multi-agent control for Microgrid/Smartgrid. He has received Post-Doctoral research grant from University of Cagliari, Italy 2015. He has published 38 research papers in peer reviewed international journals and conferences of repute. He has contributed as session chair and organising committee member at many national and international conferences. Dr. Mehta is Senior Member of IEEE, Life Member of Institution of Engineer (India), Life Member of Indian Society for Technical Education and Member of Systems Society of India. He is conferred the Best research paper award by Systems Society of India and Pedagogical Innovation award 2014 by Gujarat Technological University.
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Shah, D., Mehta, A. Discrete-time sliding mode controller subject to real-time fractional delays and packet losses for networked control system. Int. J. Control Autom. Syst. 15, 2690–2703 (2017). https://doi.org/10.1007/s12555-016-0761-8
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DOI: https://doi.org/10.1007/s12555-016-0761-8