Observabilty singularities and observer design: dual immersion approach

Langueh, Kokou, Datcu, Octaviana, Barbot, Jean Pierre, Zheng, Gang and Busawon, Krishna (2016) Observabilty singularities and observer design: dual immersion approach. IFAC-PapersOnLine, 49 (18). pp. 511-516. ISSN 2405-8963

[img]
Preview
Text
Busawon.pdf - Published Version

Download (533kB) | Preview
Official URL: http://dx.doi.org/10.1016/j.ifacol.2016.10.216

Abstract

It is well-known that, for nonlinear systems, the observability is often only a local property and depends on the input. Moreover, it is often required that the observer be of the same dimension as the original system. A direct consequence of this requirement is that it enlarges the set of observability singularities. If, on one hand, it is impossible to observe the state variables that are structurally unobservable, it is, however, possible to overcome the observability singularities introduced by the constraints on the observer design. In this paper, we propose a novel dual immersion method which allows to reduce the set of observability singularities. In addition, a step by step design of a high order sliding mode observer based on the proposed dual immersion approach is presented. Finally, a thorough analysis and discussion on the simulation results with respect to a non-autonomous system is given.

Item Type: Article
Subjects: H100 General Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Becky Skoyles
Date Deposited: 02 Feb 2017 09:18
Last Modified: 30 Oct 2017 14:16
URI: http://nrl.northumbria.ac.uk/id/eprint/29430

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year

View more statistics


Policies: NRL Policies | NRL University Deposit Policy | NRL Deposit Licence