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Sliding Mode Observers - A Survey

Spurgeon, Sarah K. (2008) Sliding Mode Observers - A Survey. International Journal of Systems Science, 39 (8). pp. 751-764. ISSN 0020-7721. (doi:10.1080/00207720701847638) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Sliding mode observers have unique properties, in that the ability to generate a sliding motion on the error between the measured plant output and the output of the observer ensures that a sliding mode observer produces a set of state estimates that are precisely commensurate with the actual output of the plant. It is also the case that analysis of the average value of the applied observer injection signal, the so-called equivalent injection signal, contains useful information about the mismatch between the model used to define the observer and the actual plant. These unique properties, coupled with the fact that the discontinuous injection signals which were perceived as problematic for many control applications have no disadvantages for software-based observer frameworks, have generated a ground swell of interest in sliding mode observer methods in recent years. This article presents an overview of both linear and non-linear sliding mode observer paradigms. The use of the equivalent injection signal in problems relating to fault detection and condition monitoring is demonstrated. A number of application specific results are also described. The literature in the area is presented and qualified in the context of continuing developments in the broad areas of the theory and application of sliding mode observers.

Item Type: Article
DOI/Identification number: 10.1080/00207720701847638
Additional information: Invited Survey Paper
Uncontrolled keywords: sliding mode; observers; equivalent injection; fault detection; condition monitoring
Subjects: T Technology > TJ Mechanical engineering and machinery > Control engineering
Divisions: Faculties > Sciences > School of Engineering and Digital Arts > Instrumentation, Control and Embedded Systems
Depositing User: J. Harries
Date Deposited: 21 Apr 2009 10:17 UTC
Last Modified: 28 May 2019 13:53 UTC
Resource URI: (The current URI for this page, for reference purposes)
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