基于分布式仿真的液压能源系统效能评估方法研究

Research on Efficiency Evaluation Method of Hydraulic Energy System Based on Distributed Simulation

飞机液压能源系统是支持飞机主飞控系统、高升力系统以及起落架等关键系统正常工作的核心动力来源,其系统效能是飞机液压能源系统的一个重要设计指标。针对目前飞机液压能源系统的效能分析缺乏完善且有效的方法,设计一种基于分布式仿真的效能分析方法。结合系统工作原理,运用AMESim建立液压能源系统分布式仿真模型,在考虑全飞行过程液压能源系统加载负载工作情况下,对液压能源系统效能与关键指标的关系进行研究,建立了三层两级效能评估指标体系,并验证了指标体系的有效性。运用熵权法对效能指标进行相对权重分析,采用扩展贝叶斯融合算法对飞机全飞行过程中的液压能源系统负载在环的部件级效能和系统综合效能进行了研究。最后以某航班真实飞行任务数据为例,验证了效能分析方法的正确性。

Aircraft hydraulic energy system is the core power source to support the normal operation of key systems such as aircraft main flight control system,high lift system and landing gear.The system efficiency is an important design index of aircraft hydraulic energy system.In view of the lack of a perfect and effective method for the efficiency analysis of aircraft hydraulic energy system at present,an efficiency analysis method based on distributed simulation was designed.Combined with the working principle of the system,AMESim was used to establish the distributed simulation model of hydraulic energy system,and the relationship between the efficiency of hydraulic energy system and key indexes was studied under the condition of considering the loading work of hydraulic energy system in the whole flight process.A three-tier and two-level efficiency evaluation index system was established,and the efficiency of the index system was verified.The entropy weight method was used to analyze the relative weight of the efficiency index.The extended Bayesian fusion algorithm was used to study the component level efficiency and system comprehensive efficiency of the hydraulic energy system load in the loop during the whole flight of the aircraft.Finally,the real flight mission data of a aircraft were taken as example to verify the correctness of the efficiency analysis method.