Increasing the reliability of high redundancy actuators by using elements in series and parallel

Thomas Steffen; Frank Schiller; Michael Blum; Roger Dixon

doi:10.1007/978-3-642-04468-7_22

Increasing the reliability of high redundancy actuators by using elements in series and parallel

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	Computer Safety, Reliability, and Security - 28th International Conference, SAFECOMP 2009, Proceedings
Pages	270-282
Number of pages	13
DOIs	https://doi.org/10.1007/978-3-642-04468-7_22
Publication status	Published - 4 Nov 2009
Event	28th International Conference on Computer Safety, Reliability, and Security, SAFECOMP 2009 - Hamburg, Germany Duration: 15 Sept 2009 → 18 Sept 2009

Publication series

Name	Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume	5775 LNCS
ISSN (Print)	0302-9743
ISSN (Electronic)	1611-3349

Conference

Conference	28th International Conference on Computer Safety, Reliability, and Security, SAFECOMP 2009
Country/Territory	Germany
City	Hamburg
Period	15/09/09 → 18/09/09

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

Theoretical Computer Science
Computer Science(all)

Access to Document

10.1007/978-3-642-04468-7_22

Cite this

Steffen, T., Schiller, F., Blum, M., & Dixon, R. (2009). Increasing the reliability of high redundancy actuators by using elements in series and parallel. In Computer Safety, Reliability, and Security - 28th International Conference, SAFECOMP 2009, Proceedings (pp. 270-282). (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 5775 LNCS). https://doi.org/10.1007/978-3-642-04468-7_22

Steffen, Thomas ; Schiller, Frank ; Blum, Michael et al. / Increasing the reliability of high redundancy actuators by using elements in series and parallel. Computer Safety, Reliability, and Security - 28th International Conference, SAFECOMP 2009, Proceedings. 2009. pp. 270-282 (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)).

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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 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.",

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",

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Steffen, T, Schiller, F, Blum, M & Dixon, R 2009, Increasing the reliability of high redundancy actuators by using elements in series and parallel. in Computer Safety, Reliability, and Security - 28th International Conference, SAFECOMP 2009, Proceedings. Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), vol. 5775 LNCS, pp. 270-282, 28th International Conference on Computer Safety, Reliability, and Security, SAFECOMP 2009, Hamburg, Germany, 15/09/09. https://doi.org/10.1007/978-3-642-04468-7_22

Increasing the reliability of high redundancy actuators by using elements in series and parallel. / Steffen, Thomas; Schiller, Frank; Blum, Michael et al.
Computer Safety, Reliability, and Security - 28th International Conference, SAFECOMP 2009, Proceedings. 2009. p. 270-282 (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 5775 LNCS).

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

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Steffen T, Schiller F, Blum M, Dixon R. Increasing the reliability of high redundancy actuators by using elements in series and parallel. In Computer Safety, Reliability, and Security - 28th International Conference, SAFECOMP 2009, Proceedings. 2009. p. 270-282. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)). doi: 10.1007/978-3-642-04468-7_22

Increasing the reliability of high redundancy actuators by using elements in series and parallel

Abstract

Publication series

Conference

Keywords

ASJC Scopus subject areas

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