Failure Modes and Probabilities of a High Redundancy Actuator

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

doi:10.3182/20080706-5-KR-1001.00549

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 proceeding › Conference contribution › peer-review

10 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 language	English
Title of host publication	Proceedings of the 17th World Congress, International Federation of Automatic Control
Publisher	Elsevier
Pages	3234-3239
Number of pages	6
Volume	41
Edition	2
ISBN (Print)	9783902661005
DOIs	https://doi.org/10.3182/20080706-5-KR-1001.00549
Publication status	Published - 2008
Externally published	Yes
Event	17th World Congress, International Federation of Automatic Control - Seoul, Korea, Republic of Duration: 6 Jul 2008 → 11 Jul 2008 Conference number: 17

Publication series

Name	IFAC Proceedings Volumes (IFAC-PapersOnline)
Publisher	Elsevier
Number	2
Volume	41
ISSN (Print)	1474-6670

Conference

Conference	17th World Congress, International Federation of Automatic Control
Abbreviated title	IFAC2008
Country/Territory	Korea, Republic of
City	Seoul
Period	6/07/08 → 11/07/08

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10.3182/20080706-5-KR-1001.00549Licence: Other

Cite this

Steffen, T., Davies, J., Dixon, R., Goodall, R. M., Pearson, J., & Zolotas, A. (2008). Failure Modes and Probabilities of a High Redundancy Actuator. In Proceedings of the 17th World Congress, International Federation of Automatic Control (2 ed., Vol. 41, pp. 3234-3239). (IFAC Proceedings Volumes (IFAC-PapersOnline); Vol. 41, No. 2). Elsevier. https://doi.org/10.3182/20080706-5-KR-1001.00549

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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.",

keywords = "fault-tolerant control, fault accommodation, fault mode and effect analysis (FMEA), high redundancy actuator, failure probability",

author = "Thomas Steffen and Jessica Davies and Roger Dixon and Goodall, {R. M.} and John Pearson and Argyrios Zolotas",

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Steffen, T, Davies, J, Dixon, R, Goodall, RM, Pearson, J & Zolotas, A 2008, Failure Modes and Probabilities of a High Redundancy Actuator. in Proceedings of the 17th World Congress, International Federation of Automatic Control. 2 edn, vol. 41, IFAC Proceedings Volumes (IFAC-PapersOnline), no. 2, vol. 41, Elsevier, pp. 3234-3239, 17th World Congress, International Federation of Automatic Control, Seoul, Korea, Republic of, 6/07/08. https://doi.org/10.3182/20080706-5-KR-1001.00549

Failure Modes and Probabilities of a High Redundancy Actuator. / Steffen, Thomas; Davies, Jessica; Dixon, Roger et al.

Proceedings of the 17th World Congress, International Federation of Automatic Control. Vol. 41 2. ed. Elsevier, 2008. p. 3234-3239 (IFAC Proceedings Volumes (IFAC-PapersOnline); Vol. 41, No. 2).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AB - 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.

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Failure Modes and Probabilities of a High Redundancy Actuator

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