Abstract
In this paper, probabilistic models for three redundant configurations have been developed to analyze and compare some reliability characteristics. Each system is connected to a repairable supporting external device for operation. Repairable service station is provided for immediate repair of failed unit. Explicit expressions for mean time to system failure and steady-state availability for the three configurations are developed. Furthermore, we compare the three configurations based on their reliability characteristics and found that configuration II is more reliable and efficient than the remaining configurations.
Highlights
High system reliability and availability play a vital role towards industrial growth as the profit is directly dependent on production volume which depends upon system performance
The differences between availability of configuration II and the other two configurations widen as α3 and β3 increases respectively
It is clear from these Figures that differences between mean time to system failure (MTSF) of configuration I and III and configuration II widen as α1, α3 and β3 increases respectively
Summary
High system reliability and availability play a vital role towards industrial growth as the profit is directly dependent on production volume which depends upon system performance. Because of their prevalence in power plants, manufacturing systems, and industrial systems, many researchers have studied reliability and availability problem of different systems (see, for instance, Ref [1]-[8] and the references therein). In real-life situations we often encounter cases where the systems that cannot work without the help of external supporting devices connect to such systems. These external supporting devices are systems themselves that are bound to fail Where such systems exist, a repairable service station is provided for the immediate repair of failed unit. A repairable service station is provided for the immediate repair of failed unit Such systems are found in power plants, manufacturing systems, and industrial systems. Ref [9] [10] performed comparative analysis of some reliability characteristics between redundant systems requiring supporting units for their operation
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