Abstract
In this article, an observer for linear time variant systems affected by unknown inputs is suggested. The proposed observer combines the deterministic least squares filter and the high-order sliding-mode differentiator to provide exact state reconstruction in spite of bounded unknown inputs and system instability. The cascade structure of the algorithm provides a correct state reconstruction for the class of linear time variant systems that satisfy the structural property of strong observability. Simulations illustrate the performance of the proposed algorithm.
Original language | English |
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Pages (from-to) | 2338-2356 |
Number of pages | 19 |
Journal | International Journal of Robust and Nonlinear Control |
Volume | 27 |
Issue number | 14 |
DOIs | |
State | Published - 25 Sep 2017 |
Keywords
- linear time-varying system
- nonlinear observers
- sliding modes
- uncertain systems