Output feedback control of discrete-time systems in networked environments
Peng, Chen, Tian, Yu-Chu, & Yue, Dong (2011) Output feedback control of discrete-time systems in networked environments. IEEE Transactions on Systems, Man and Cybernetics, Part A : Systems & Humans, 41(1), pp. 185-190.
This correspondence paper addresses the problem of output feedback stabilization of control systems in networked environments with quality-of-service (QoS) constraints. The problem is investigated in discrete-time state space using Lyapunov’s stability theory and the linear inequality matrix technique. A new discrete-time modeling approach is developed to describe a networked control system (NCS) with parameter uncertainties and nonideal network QoS. It integrates a network-induced delay, packet dropout, and other network behaviors into a unified framework. With this modeling, an improved stability condition, which is dependent on the lower and upper bounds of the equivalent network-induced delay, is established for the NCS with norm-bounded parameter uncertainties. It is further extended for the output feedback stabilization of the NCS with nonideal QoS. Numerical examples are given to demonstrate the main results of the theoretical development.
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