Adaptive Tracker for Nonlinear Time-Varying Systems Against Actuator Failures

J.S.H. Tsai, C.-L. Wei, S.-M. Guo (Taiwan), and L.S. Shieh (USA)

Keywords

Adaptive observer, fault detection, fault tolerance control.

Abstract

The adaptive observer for the nonlinear time-varying continuous-time system has been proposed in this paper. Also, a novel state-space adaptive observer-based tracker scheme for nonlinear time-varying sampled-data systems, which have unanticipated decay factors in the actuators, has been proposed in this paper. Here, we utilize the advantage of digital redesign methodology to convert a theoretically well-designed analog controller/observer with a high-gain property into its corresponding low-gain digital controller/observer for a practical implementation.

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