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Quantized Output Feedback Control of Networked Control Systems with Packet Dropout

Mei Yu*, Shuang Bai, Ting Yang, and Jianhua Zhang
International Journal of Control, Automation, and Systems, vol. 16, no. 5, pp.2559-2568, 2018

Abstract : "This paper considers the quantized dynamic output feedback control of networked control system(NCS) with random packet dropout in both sensor-to-controller and controller-to-actuator channels. The packet losses in the two links are modeled as two independent Markov chains and the NCS is modeled as a Markov jump system. The stochastic switching signal for the quantized output feedback controller is designed to be a function of the number of successive packet loss in both of the two channels. Quantization density varies with the networked load condition. Then a sufficient condition of the stochastic stability with a prescribed H∞ performance level is established based on the Lyapunov-Krasovskii function approach. Furthermore, a quantized output feedback controller is obtained via the cone complement linearization method. Finally, simulation results are provided to verify the effectiveness of the proposed method."

Keyword : "H∞ output feedback control, Markov process, networked control systems, packet dropouts, quantization density."

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