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-1001.0465

Failure modes and probabilities of a high redundancy actuator

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

Mechanical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 language	English
Title of host publication	Proceedings of the 17th World Congress, International Federation of Automatic Control, IFAC
Volume	17
Edition	1 PART 1
DOIs	https://doi.org/10.3182/20080706-5-KR-1001.0465
Publication status	Published - 1 Dec 2008
Event	17th World Congress, International Federation of Automatic Control, IFAC - Seoul, Korea, Republic of Duration: 6 Jul 2008 → 11 Jul 2008

Conference

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

Keywords

Analysis of reliability and safety
Fault tolerant control for networked systems
Passive approaches to fault tolerant control

ASJC Scopus subject areas

Control and Systems Engineering

Access to Document

10.3182/20080706-5-KR-1001.0465

Cite this

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title = "Failure modes and probabilities of a high redundancy actuator",

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 = "Analysis of reliability and safety, Fault tolerant control for networked systems, Passive approaches to fault tolerant control",

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, IFAC. 1 PART 1 edn, vol. 17, 17th World Congress, International Federation of Automatic Control, IFAC, Seoul, Korea, Republic of, 6/07/08. https://doi.org/10.3182/20080706-5-KR-1001.0465

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T1 - Failure modes and probabilities of a high redundancy actuator

AU - Steffen, Thomas

AU - Davies, Jessica

AU - Dixon, Roger

AU - Goodall, R. M.

AU - Pearson, John

AU - Zolotas, Argyrios

PY - 2008/12/1

Y1 - 2008/12/1

N2 - 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.

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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KW - Fault tolerant control for networked systems

KW - Passive approaches to fault tolerant control

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M3 - Conference contribution

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BT - Proceedings of the 17th World Congress, International Federation of Automatic Control, IFAC

T2 - 17th World Congress, International Federation of Automatic Control, IFAC

Y2 - 6 July 2008 through 11 July 2008

ER -

Failure modes and probabilities of a high redundancy actuator

Abstract

Conference

Keywords

ASJC Scopus subject areas

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