Sensor fault detection and identification in a mobile robot

Stergios I. Roumeliotis, Gaurav S. Sukhatme, George A. Bekey

Research output: Chapter in Book/Report/Conference proceedingConference contribution

110 Scopus citations

Abstract

Multiple model adaptive estimation (MMAE) is used to detect and identify sensor failures in a mobile robot. Each estimator is a Kalman filter with a specific embedded failure model. The filter bank also contains one filter which has the nominal model embedded within it. The filter residuals are postprocessed to produce a probabilistic interpretation of the operation of the system. The output of the system at any given time is the confidence in the correctness of the various embedded models. As an additional feature the standard assumption that the measurements are available at a constant, common frequency, is relaxed. Measurements are assumed to be asynchronous and of varying frequency. The particularly difficult case of `soft' sensor failure is also handled successfully. A system architecture is presented for the general problem of failure detection and identification in mobile robots. As an example, the MMAE algorithm is demonstrated on a Pioneer I robot in the case of three different sensor failures.

Original languageEnglish (US)
Title of host publicationInnovations in Theory, Practice and Applications
Editors Anon
PublisherIEEE
Pages1383-1387
Number of pages5
Volume3
StatePublished - Dec 1 1998
EventProceedings of the 1998 IEEE/RSJ International Conference on Intelligent Robots and Systems. Part 1 (of 3) - Victoria, Can
Duration: Oct 13 1998Oct 17 1998

Other

OtherProceedings of the 1998 IEEE/RSJ International Conference on Intelligent Robots and Systems. Part 1 (of 3)
CityVictoria, Can
Period10/13/9810/17/98

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