Failure Modes and Probabilities of a High Redundancy Actuator

Thomas Steffen, Jessica Davies, Roger Dixon, R. M. Goodall, John Pearson, Argyrios Zolotas

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

9 Citations (Scopus)

Abstract

A high redundancy actuator (HRA) is composed of a high number of actuation elements, increasing both the travel and the force over the power of an individual element. This provides inherent fault tolerance, because when an element fails, the capabilities of the actuator may be reduced, but it does not become dysfunctional. This paper analyses the likelihood of different reductions in capabilities, based on the reliability of the actuation elements used. The result is a probability distribution that quantifies the capability of the high redundancy actuator. Together with the required capabilities, this determines the fault tolerance of the actuator.

Original languageEnglish
Title of host publicationProceedings of the 17th World Congress, International Federation of Automatic Control
PublisherElsevier
Pages3234-3239
Number of pages6
Volume41
Edition2
ISBN (Print)9783902661005
DOIs
Publication statusPublished - 2008
Externally publishedYes
Event17th World Congress, International Federation of Automatic Control - Seoul, Korea, Republic of
Duration: 6 Jul 200811 Jul 2008
Conference number: 17

Publication series

NameIFAC Proceedings Volumes (IFAC-PapersOnline)
PublisherElsevier
Number2
Volume41
ISSN (Print)1474-6670

Conference

Conference17th World Congress, International Federation of Automatic Control
Abbreviated titleIFAC2008
CountryKorea, Republic of
CitySeoul
Period6/07/0811/07/08

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