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Variable structure observer for a class of nonlinear large-scale interconnected systems with uncertainties

Mohamed, M; Yan, XG; Spurgeon, SK; Mao, Z; (2016) Variable structure observer for a class of nonlinear large-scale interconnected systems with uncertainties. In: Proceedings of the 14th International Workshop on Variable Structure Systems 2016 (VSS'16). (pp. pp. 385-390). IEEE: Nanjing, China. Green open access

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Abstract

In this paper, a variable structure observer design approach is proposed for a class of nonlinear, large-scale interconnected systems in the presence of unstructured uncertainty. The modern geometric approach is exploited to explore the system structure and a transformation is developed to facilitate observer design. Using the Lyapunov direct method, a robust asymptotic observer is presented which exploits the internal dynamic structure of the system as well as the structure of the uncertainties. The bounds on the uncertainties are nonlinear and are employed in the observer design to reject the effect of the uncertainties. A numerical example is presented to illustrate the approach and the simulation results show that the proposed approach is effective.

Type: Proceedings paper
Title: Variable structure observer for a class of nonlinear large-scale interconnected systems with uncertainties
Event: 14th International Workshop on Variable Structure Systems 2016 (VSS'16)
ISBN-13: 9781467397889
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/VSS.2016.7506949
Publisher version: https://doi.org/10.1109/VSS.2016.7506949
Language: English
Additional information: Copyright © 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Keywords: Observers, Interconnected systems, Uncertainty, Robustness, Nonlinear dynamical systems, Fault detection, Large-scale systems
UCL classification: UCL > School of BEAMS
UCL > School of BEAMS > Faculty of Engineering Science
URI: http://discovery.ucl.ac.uk/id/eprint/1515792
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