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State and Parameter Estimation for Nonlinear Delay Systems Using Sliding Mode Techniques

Yan, Xinggang, Spurgeon, Sarah K., Edwards, Christopher (2013) State and Parameter Estimation for Nonlinear Delay Systems Using Sliding Mode Techniques. IEEE Transactions on Automatic Control, 58 (4). pp. 1023-1029. ISSN 0018-9286. (doi:10.1109/TAC.2012.2215531) (KAR id:35571)

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In this technical note, a class of time varying delay nonlinear systems is considered where both parametric uncertainty and structural uncertainty are involved. The uncertain parameters are embedded in the system nonlinearly. The bound on the structural uncertainty takes nonlinear form and is time delayed. A sliding mode observer is proposed to estimate the system state and an adaptive law is proposed to estimate the unknown parameters simultaneously. Using the Lyapunov-Razuminkhin approach, sufficient conditions are developed such that the error system is uniformly ultimately bounded. A simulation on a bioreactor system shows the effectiveness of the approach

Item Type: Article
DOI/Identification number: 10.1109/TAC.2012.2215531
Uncontrolled keywords: INSPEC: CONTROLLED INDEXING Lyapunov methods delays nonlinear control systems observers parameter estimation variable structure systems INSPEC: NON CONTROLLED INDEXING Lyapunov-Razuminkhin approach nonlinear delay systems parameter estimation parametric uncertainty sliding mode observer sliding mode techniques structural uncertainty AUTHOR KEYWORDS Adaptive estimation nonlinear system sliding mode state estimation time delay
Subjects: T Technology
Divisions: Divisions > Division of Computing, Engineering and Mathematical Sciences > School of Engineering and Digital Arts
Depositing User: Tina Thompson
Date Deposited: 22 Oct 2013 09:33 UTC
Last Modified: 16 Nov 2021 10:12 UTC
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