Disturbance Attenuation and Rejection for Nonlinear Uncertain Switched Systems Subject to Input Saturation

Yunliang Wei*, Guo Ping Liu, Jun Hu, Fanwei Meng

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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This paper studies the problem of disturbance attenuation and rejection for switched systems with nonlinear uncertainty and input saturation via composite anti-disturbance control technique, in which the exosystem-generated disturbance and H 2 -norm-bounded disturbance are considered. For switched systems, the switching law and input saturation increase the difficulty for the design of the disturbance observer and the composite control scheme. A switching disturbance observer is designed to obtain the estimation of the matched disturbance, and a novel switching composite controller is further constructed based on the estimated value. By proposing a state-dependent switching law and utilizing the multiple Lyapunov function technology, the criteria are presented to ensure the local asymptotic stability with an H performance level for the closed-loop system. Furthermore, two optimal algorithms of the design of the controller are put forward to maximize the estimation of the domain of attraction of the closed-loop and the upper bound on the H 2 -norm of the disturbance, respectively. The effectiveness of the proposed technique is illustrated via the numerical examples.

Original languageEnglish
Article number8705327
Pages (from-to)58475-58483
Number of pages9
JournalIEEE Access
Publication statusPublished - 3 May 2019


  • composite anti-disturbance control
  • input saturation
  • multiple disturbances
  • nonlinear uncertainties
  • Switched systems


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