Chattering-Free terminal sliding-mode observer for anomaly detection

Authors:
Yong Feng;Bo Wang;Fengling Han;Xinghuo Yu;Zahir Tari
Affiliations:
Department of Electrical Engineering, Harbin Institute of Technology, China;Department of Electrical Engineering, Harbin Institute of Technology, China;School of Computer Science and Information Technology, RMIT University, Australia;School of Electrical and Computer Engineering, RMIT University, Melbourne, Australia;School of Computer Science and Information Technology, RMIT University, Australia
Venue:
CSS'12 Proceedings of the 4th international conference on Cyberspace Safety and Security
Year:
2012

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Abstract

This paper proposes a chattering-free terminal sliding-mode observer used for the network behavior anomaly detection in TCP/IP networks. The proposed observer can track the fluid-flow model representing the TCP/IP behaviors in a router level. Unlike traditional sliding-mode observers, the proposed observer behaves as a full-order dynamics during the sliding-mode motion. The smooth control signal of the observer can be directly utilized to estimate the queue length dynamics representing a distributed anomaly in the TCP/IP network. The simulations are carried out to verify the effectiveness of the proposed method.