Journal of System Simulation ›› 2021, Vol. 33 ›› Issue (3): 529-538.doi: 10.16182/j.issn1004731x.joss.19-0617

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Guaranteed Cost Preview and Repetitive Control for Uncertain Linear Discrete Time-Delay Systems

Lan Yonghong, He Jinlin   

  1. School of information engineering, Xiangtan University, Xiangtan 411105, China
  • Received:2019-11-26 Revised:2020-01-23 Online:2021-03-18 Published:2021-03-18

Abstract: For a class of uncertain linear discrete time-delay systems, a design method for guaranteed cost preview and repetitive controller is proposed . By introducing a repetitive controller in the forward channel to improve the tracking accuracy of the system, L-order difference operators are used to construct an augmented error system that contains preview information but does not include time delay, and the design problem of guaranteed cost preview and repetitive controller is converted into an output feedback adjustment problem. Using the Lyapunov stability theory and the linear matrix inequality method, the sufficient conditions for guaranteeing the asymptotic stability of the closed-loop system are obtained. A numerical simulation is presented to illustrate the validity of the proposed method.

Key words: discrete time-delay system, preview control, repetitive control, guaranteed cost, linear matrix inequality

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