基于模块化仿真的船舶动力系统任务可靠性研究

Research on Mission Reliability of Marine Propulsive System Based on Modular Simulation

针对传统基于统计学的统计评估模型和基于可靠性框图的解释计算模型在研究多阶段复杂可修系统可靠性方面存在的数据获取困难、过程描述能力不足等问题,用面向对象的模块化仿真方法,将动力系统的任务过程按任务目标分解为若干子过程;然后,通过对各子过程内部运行规则的仿真建模和子过程之间变迁规则的描述,建立多任务过程、多使用状态的复杂可修船舶动力系统任务可靠性仿真模型,并将装备性能退化的影响融入到任务过程仿真中;最后,以某型船用蒸汽动力系统为例,验证了方法的可行性。

When we study the reliability research of multistage complex repairable system, the traditional statistical evaluation model based on statistics has data acquisition problems and the interpreta-tion calculation model based on reliability block diagram has process description problems. An object-oriented modular simulation method was used to decompose the task process into several sub-processes according to the task target. And then, through the modeling of internal running rules of each sub-process and the description of the change rules between sub-processes, a mission reliability simulation model of a complex repairable ship power system with multi task process and multi use state was established, and the effect of gradual failures were also integrated into the simulation of the task process. Finally, a certain type of marine steam power system was taken as an example to verify the feasibility of this method.