转换开关不完全可靠的三部件串联冷贮备系统

Three parts tandem cold standby system with incomplete reliable switch

针对一般可修系统中可靠性指标不易计算的问题,采用时齐马尔可夫过程,研究了假设工作部件与转换开关的寿命、部件的修理时间均服从连续型指数分布,开关修理时间为PH分布,转换开关不完全可靠,各部件均能修复如新的三部件串联冷贮备系统.结果表明:通过引入PH分布代替一般分布等分布,易于计算一些可靠性指标.

In response to the problem that it is difficult to calculate reliability index in general repairable system, using the Markov process, this study investigates the three parts tandem cold reserve system with the hypothesis that the working parts and switch life, and component repair time obey the continuous exponential distribution; the switch repair time follows PH distribution, the switch is not completely reliable, and each unit can be restored as new. The results show that： by introducing PH distribution instead of general distribution or other distributions, it is easy to calculate some reliability indexes.