【摘要】 实际工程中常采用多个相同单元并联方式来提高系统局部可靠性,达到提高系统可靠性的目的.然而,实际上无法做到各并联单元完全相同,各单元可靠性参数存在差异,从而形成不同单元并联形式.对于不同单元组成的并联系统,确定其可靠性目前尚无有效的方法.本文应用马尔可夫过程方法,对不同单元并联系统的各种状态(工作状态和故障修复状态)及状态转移(工作状态和太障修复状态两者之间转移)过程进行分析.根据各单元寿命及修复时间为指数分布的情况,阐述了系统各种空间状态及各种状态相互转移的规律,给出了求解不同单元并联系统可靠性参数的方法.研究结果证明了该方法的有效性,并有较强实用价值.更多还原

【Abstract】 It is quite often to use many identical units in parallel in actual engineering to improve the reliability of the system .In fact all the units have different reliability parameters ,it is therefore a system with defferent units in parallel.Markov process is used to analyze different working orders and repair failure rates,and changes in both working orders and repar failure states for different units in parallel .Based upon the exponential distribution of life span and repair time,the law of different dimensional states and reciprocal motions is used to obtain the reliability parameters for different units in parallel.Experimental results proved this method is effective and practicable. 更多还原