We still do not have a complete solution of battlefield damage assessment and repair of large and complex system of warship main power plant in our country, the vitality analysis of warship main power plant and a calculating method of warship speed under the condition of battlefield damage were developed in this paper. Using the inference method of Bayesian network and Damage Tree the damage localization of damage equipments was realized. The logic of repair decision making of warship main power plant was discussed, under the condition of battlefield, the basic system framework was built and a relatively perfect solution was put forward, repair decision support system of a certain warship main power plant was developed according to this program, development and application of the system has a strong military significance.%针对舰艇主动力装置这一复杂系统的战损评估与抢修国内还没有一个完善的解决方案,提出了战损情况下主动力装置生命力分析和舰艇航速计算的方法；利用贝叶斯网络和损伤树的推理方法实现了装备的损伤定位；探讨了战场环境下主动力装置抢修决策的逻辑关系；构建了系统的基本框架并提出较完善的解决方案,根据此方案开发了某型舰主动力装置抢修决策支持系统,该系统的开发与应用具有较强的军事意义.
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