Increasing reliability by means of efficient configurations for high redundancy actuators

Thomas Steffen; Frank Schiller; Michael Blum; Roger Dixon

doi:10.3182/20090630-4-ES-2003.0023

Increasing reliability by means of efficient configurations for high redundancy actuators

Thomas Steffen^*, Frank Schiller, Michael Blum, Roger Dixon

^*Corresponding author for this work

Mechanical Engineering

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

1 Citation (Scopus)

Abstract

A high redundancy actuator (HRA) is composed of a high number of actuation elements, increasing both the travel and the force above the capability of an individual element. This provides inherent fault tolerance: if one of the elements fails, the capabilities of the actuator may be reduced, but it does not become dysfunctional. This paper analyses the likelihood of reductions in capabilities. The actuator is considered as a multi-state system, and the approach for k-out-of-n:G systems can be extended to cover the case of the HRA. The result is a probability distribution that quantifies the capability of the HRA. By comparing the distribution for different configurations, it is possible to identify the optimal configuration of an HRA for a given situation.

Original language	English
Title of host publication	SAFEPROCESS'09 - 7th IFAC International Symposium on Fault Detection, Supervision and Safety of Technical Systems, Proceedings
Pages	1222-1227
Number of pages	6
DOIs	https://doi.org/10.3182/20090630-4-ES-2003.0023
Publication status	Published - 1 Dec 2009
Event	7th IFAC International Symposium on Fault Detection, Supervision and Safety of Technical Systems, SAFEPROCESS'09 - Barcelona, Spain Duration: 30 Jun 2009 → 3 Jul 2009

Conference

Conference	7th IFAC International Symposium on Fault Detection, Supervision and Safety of Technical Systems, SAFEPROCESS'09
Country/Territory	Spain
City	Barcelona
Period	30/06/09 → 3/07/09

Keywords

Dependable systems
Failure probability
Fault mode and effect analysis (FMEA)
Fault-tolerance
High redundancy actuator (HRA)
K-out-of-n:G system
Multi-state system

ASJC Scopus subject areas

Control and Systems Engineering

Access to Document

10.3182/20090630-4-ES-2003.0023

Cite this

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title = "Increasing reliability by means of efficient configurations for high redundancy actuators",

abstract = "A high redundancy actuator (HRA) is composed of a high number of actuation elements, increasing both the travel and the force above the capability of an individual element. This provides inherent fault tolerance: if one of the elements fails, the capabilities of the actuator may be reduced, but it does not become dysfunctional. This paper analyses the likelihood of reductions in capabilities. The actuator is considered as a multi-state system, and the approach for k-out-of-n:G systems can be extended to cover the case of the HRA. The result is a probability distribution that quantifies the capability of the HRA. By comparing the distribution for different configurations, it is possible to identify the optimal configuration of an HRA for a given situation.",

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Steffen, T, Schiller, F, Blum, M & Dixon, R 2009, Increasing reliability by means of efficient configurations for high redundancy actuators. in SAFEPROCESS'09 - 7th IFAC International Symposium on Fault Detection, Supervision and Safety of Technical Systems, Proceedings. pp. 1222-1227, 7th IFAC International Symposium on Fault Detection, Supervision and Safety of Technical Systems, SAFEPROCESS'09, Barcelona, Spain, 30/06/09. https://doi.org/10.3182/20090630-4-ES-2003.0023

Increasing reliability by means of efficient configurations for high redundancy actuators. / Steffen, Thomas; Schiller, Frank; Blum, Michael et al.
SAFEPROCESS'09 - 7th IFAC International Symposium on Fault Detection, Supervision and Safety of Technical Systems, Proceedings. 2009. p. 1222-1227.

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

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AU - Blum, Michael

AU - Dixon, Roger

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Increasing reliability by means of efficient configurations for high redundancy actuators

Abstract

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Keywords

ASJC Scopus subject areas

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