Lz-transform approach for fault tolerance assessment of various traction drives topologies of hybrid-electric helicopter

Ilia Frenkel, Igor Bolvashenkov, Hans Georg Herzog, Lev Khvatskin

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

4 Scopus citations

Abstract

This chapter presents a preliminary analysis of fault tolerance, availability and performance assessment of the two promising options of the hybrid-electric traction drive version for the helicopter, which can be treated as multi-state system, where components and entire system in general case have an arbitrary finite number of states corresponding to the different performance rates. The performance rate (output nominal power) of the system at any time instant is interpreted as a discrete-state continuous-time stochastic process. In the present chapter, the Lz-transform is applied to a real multi-state hybrid-electric traction drive version for the helicopter system that is functioning under various stochastic demands and its availability and performance is analyzed. It is shown that Lz-transform application drastically simplifies the availability computation for such a system compared with the straightforward Markov method.

Original languageEnglish
Title of host publicationSpringer Series in Reliability Engineering
PublisherSpringer London
Pages321-342
Number of pages22
Edition9783319634227
DOIs
StatePublished - 2018

Publication series

NameSpringer Series in Reliability Engineering
Number9783319634227
Volume0
ISSN (Print)1614-7839
ISSN (Electronic)2196-999X

Keywords

  • Availability
  • Discrete-state continuous-time stochastic process
  • Hybrid-electric traction drive
  • Lz-transform
  • Multi-state system
  • Performance assessment

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