HRA - Intrinsically fault tolerant actuation through high redundancy

R. Dixon, T. Steffen, J. Davies, R. M. Goodall, A. C. Zolotas, J. Pearson, X. Du

Research output: Contribution to journalConference article

2 Citations (Scopus)


The aim of this paper is to summarise on-going research into a new method of providing fault tolerant actuators for high-integrity and/or safety-critical applications. The High Redundancy Actuator (HRA) project aims to exploit a large number of very small actuation elements to make up a single large actuator. This is in contrast to current technology where a relatively low level of functional redundancy is used. The HRA elements are configured and controlled in such a way that faults in individual elements are inherently accommodated without resulting in a failure of the complete actuation system. The HRA project research challenges are outlined and progress to-date is discussed.

Original languageEnglish
Pages (from-to)1216-1221
Number of pages6
Issue number8
Publication statusPublished - 1 Dec 2009
Externally publishedYes
Event7th IFAC International Symposium on Fault Detection, Supervision and Safety of Technical Systems - Barcelona, Spain
Duration: 30 Jun 20093 Jul 2009
Conference number: 7

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  • Cite this

    Dixon, R., Steffen, T., Davies, J., Goodall, R. M., Zolotas, A. C., Pearson, J., & Du, X. (2009). HRA - Intrinsically fault tolerant actuation through high redundancy. IFAC-PapersOnLine, 42(8), 1216-1221.