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Modelling Reliability-Adaptive multi-system operation

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Abstract

This contribution discusses the concept of Reliability-Adaptive Systems (RAS) to multi-system operation. A fleet of independently operating systems and a single maintenance unit are considered. It is the objective in this paper to increase overall performance or workload respectively by avoiding delay due to busy maintenance units. This is achieved by concerted and coordinated derating of individual system performance, which increases reliability. Quantification is carried out by way of a convolution-based approach. The approach is tailored to fleets of ships, aeroplanes, spacecraft, and vehicles (trains, trams, buses, cars, trucks, etc.) — Finally, the effectiveness of derating is validated using different criteria. The RAS concept makes sense if average system output loss due to lowered performance level (yielding longer time to failure) is smaller than average loss due to waiting for maintenance in a non-adaptive case.

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Uwe K. Rakowsky received an Engineering Diploma and Doctor of Engineering degree in safety engineering in 1988 and 1991 respectively, and was granted venia legendi in safety and reliability engineering in 2000 from the University of Wuppertal, where he served as an Assistant Professor in the Transportation System Safety Section from 1992 to 2000. He was a visiting Professor at the University College at Stord/Haugesund in Norway in 1996, and a visiting researcher at the University of Tokyo from 1998 to 1999. Since 2000 he has been a RAMS program manager with Vossloh Kiepe in Düsseldorf (Germany), a company producing electric equipment for locomotives, light rail vehicles, and electric buses. He has published three books, and more than thirty papers. He is a member of several international and German engineering and scientific societies.

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Rakowsky, U.K. Modelling Reliability-Adaptive multi-system operation. Int J Automat Comput 3, 192–198 (2006). https://doi.org/10.1007/s11633-006-0192-8

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  • DOI: https://doi.org/10.1007/s11633-006-0192-8

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