A new result of terminal sliding mode finite-time state and fault estimation for a class of descriptor switched systems

作者：

Highlights：

• Sensor and process faults, the Lipschitzian and the external composite disturbances are considered in the faultedmodel.

• The actuator empirical efficiency is introduced to help the estimation of the time-varying actuator degradation.

• A changeable auxiliary matrix helps the realization of the rank conditions in Lemma 2, which is not dependent on the system.

• The extended Lyapunov finite-time TSM stability is introduced into the switched system, and the ADT approach is considered.

摘要

•Sensor and process faults, the Lipschitzian and the external composite disturbances are considered in the faultedmodel.•The actuator empirical efficiency is introduced to help the estimation of the time-varying actuator degradation.•A changeable auxiliary matrix helps the realization of the rank conditions in Lemma 2, which is not dependent on the system.•The extended Lyapunov finite-time TSM stability is introduced into the switched system, and the ADT approach is considered.

论文关键词：Fault estimation,Sliding mode observer,Switched systems,Descriptor systems,Finite-time convergence

论文评审过程：Received 31 August 2020, Revised 12 January 2021, Accepted 6 February 2021, Available online 27 February 2021, Version of Record 27 February 2021.

论文官网地址：https://doi.org/10.1016/j.amc.2021.126085