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Failure Modes and Probabilities of a High Redundancy Actuator

Steffen, Thomas, Davies, Jessica, Dixon, R., Goodall, Roger M., Pearson, J.T. and Zolotas, Argyrios (2008) Failure Modes and Probabilities of a High Redundancy Actuator. In: Proceedings of the 17th IFAC World Congress, 2008. International Federation of Automatic Control, pp. 3234-3239. ISBN 9783902661005

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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.

Item Type: Book Chapter
Subjects: T Technology > TF Railroad engineering and operation
Schools: School of Computing and Engineering
School of Computing and Engineering > Institute of Railway Research
Depositing User: Cherry Edmunds
Date Deposited: 12 Jul 2013 11:43
Last Modified: 28 Aug 2021 19:51


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