New design of anti-windup and dynamic output feedback control for TCP/AQM system with asymmetrical input constraints

Sadek Belamfedel Alaoui, El Houssaine Tissir and Noreddine Chaibi

International Journal of Systems Science, 2021, vol. 52, issue 9, 1822-1834

Abstract: In this paper two important problems, i.e. Denial of Service (DoS) attack and saturated input, are considered for the TCP/AQM system. The first problem is modelled in a quantitative manner over the system dynamics. Then, Linear Matrix Inequality (LMI) condition for synthesising a Dynamic Output Feedback (DOF) controller with guaranteed cost approach is proposed. The second problem is inherently asymmetric, and a generalised sector condition is derived to obtain stability conditions based on quadratic Lyapunov functions. Sufficient conditions in terms of LMIs for designing the anti-windup compensator are then derived. By solving these LMIs, the controller matrices along with the less bound of the cost function and an appropriate anti-windup compensator are obtained. Through Network Simulator 3 (NS3) the efficiency of the theory is illustrated.

Date: 2021
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DOI: 10.1080/00207721.2020.1871108

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