|Robust Time-varying H∞ Control for Networked Control System with Uncertainties and External Disturbance
Meng Li and Yong Chen*
International Journal of Control, Automation, and Systems, vol. 16, no. 5, pp.2125-2135, 2018
Abstract : "In this paper, the robust H∞ control problem is developed for a class of linear time-varying networked
control system (NCS) with uncertainties and external disturbance. In network, the network-induced delay and
packet dropouts are simultaneously considered. Firstly, a discrete-time switched system model is established based
on the signals transmission delay in network. Then, a time-varying H∞ controller is designed. Such the controller
can vary according to delay in network. Furthermore, by constructing delay-dependent Lyapunov-Krasovskii functional,
a sufficient condition is given to guarantee that the closed-loop system is stochastically stable with an H∞
disturbance attenuation level in terms of nonlinear matrix inequalities. In order to solve the controller gain, the
cone complementarity linearization (CCL) algorithm is employed. Finally, a networked DC motor control system
is analyzed to illustrate the effectiveness of the proposed method."
"Cone complementarity linearization, network- induced delay, packet dropouts, robust time-varying H∞ control, stochastically stable."