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Title: Failure modes and probabilities of a high redundancy actuator
Authors: Steffen, Thomas
Davies, Jessica
Dixon, Roger
Goodall, Roger M.
Pearson, John T.
Zolotas, Argyrios C.
Keywords: High redundancy actuator
Fault-tolerant control
Fault accomodation
Fault mode and effect analysis (FMEA)
Failure probability
Issue Date: 2008
Publisher: © The International Federation of Automatic Control (IFAC)
Citation: STEFFEN, T. ... et al, 2008. Failure modes and probabilities of a high redundancy actuator. 17th IFAC World Congress, July 6-11, Seoul, Korea
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.
Description: This is a conference paper
URI: https://dspace.lboro.ac.uk/2134/3257
Appears in Collections:Conference Papers and Presentations (Mechanical, Electrical and Manufacturing Engineering)
Conference Papers (Control Systems Group)

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