摘要
Markov模型法和直接仿真法在分析高可靠多阶段任务系统（phased mission system，PMS）的可靠性时都存在局限性。首先给出了多阶段任务系统的描述模型，并剖析多阶段任务系统可靠性分析过程的实质。而后，介绍了一般高可靠任务系统可靠性仿真的高效方法——结合强制法和失效偏倚法，从理论上证明了结合强制法和失效偏倚法对高可靠多阶段任务系统的可靠性仿真同样是适用的，并针对多阶段任务系统变结构的特点详细给出了多阶段任务系统仿真结果统计的流程。通过案例，验证了结合强制法和失效偏倚法在多阶段任务系统可靠性分析中的正确性与高效性，并探讨了其在不同高可靠量级下的多阶段任务系统的适应性。
Both Markov model method and crude simulation method have some disadvantages when analyzing the reliability of highly reliable phased mission system （PMS）. The describing model and the essential reliability analyzing process of PMS are given firstly. Then, the efficient reliability simulation method of common highly reliable mission system, combining forcing and failure biasing （CFFB） is introduced. After that, CFFB is theoretically proved suitable for reliability simulation of PMS. Considering the phase structure changed in each phase, the reliability simulation result obtain process is detailed given. At last, the correctness and high efficiency of using CFFB simulation the mission reliability of PMS is shown through an example. The adaptability of CFFB for different high quantity of PMS＇ reliability is also discussed.
出处
《装备学院学报》
2012年第3期69-74,共6页
Journal of Equipment Academy
基金
国家自然科学基金资助项目(71071159)
关键词
多阶段任务系统
任务可靠性
高可靠系统
强制法
失效偏倚法
phased mission system（PMS）
mission reliability
highly reliable system
forcing
failure biasing
