FTA法和重要度分析在某系统可靠性中的应用

应用失效树分析（Fault Tree Analysis）法（简称FTA法），对某型火炮遥控系统进行了可靠性分析，建立了该系统的失效树，并在此基础上计算了该系统的可靠性参数，讨论了部件的概率重要度和相对比重要度，并把部件的概率重要度和相对比重要度推广到了分系统，结合所建的失效树给出了相应的结果。通过重要度分析，找到了提高系统可靠性中的途径。

Use of Fault Tree Analysis and Importance Analysis in Some System Reliability

In the paper, Fault Tree Analysis (FTA) is used to analyse the reliability of Gun Remote Control System. The system's fault tree is constructed,on the basis of which the system's reliability parameters are computed. We also discuss the probability importance and relative importance of every part and extend them to demisystem and obtain some results by using the system's FT. By means of importance analysis, we find the way to improving the system reliability.