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Dynamic event-triggered robust state and fault estimation in descriptor systems using two observers in cascade

Author

Listed:
  • Lee, Tae H.
  • Chan, Joseph Chang Lun
  • Tan, Chee Pin

Abstract

The problem of observer design using a dynamic event-triggered signals is studied for estimating the states and faults simultaneously of descriptor systems with disturbances. The system is first transformed into a structure that is convenient to analyse. A DETM is implemented to reduce the number of transmissions from the system to the observers. The first observer is designed to produce an initial estimate of the states. Signals from this observer are then fed into a sliding mode observer, which estimates the fault as well as the estimation error of the first observer. The estimated errors are used to improve the state estimates from the first observer. Linear matrix inequalities are used to design both observers such that the L2 gain from the disturbances to the state and fault estimation errors are minimised. Finally, a simulation example is utilised to showcase the performance of the proposed scheme.

Suggested Citation

  • Lee, Tae H. & Chan, Joseph Chang Lun & Tan, Chee Pin, 2026. "Dynamic event-triggered robust state and fault estimation in descriptor systems using two observers in cascade," Applied Mathematics and Computation, Elsevier, vol. 530(C).
    • Handle: RePEc:eee:apmaco:v:530:y:2026:i:c:s0096300326002110
    DOI: 10.1016/j.amc.2026.130159
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