航空发动机健康管理系统功能架构优化方法

Optimization Method of Aeroengine Health Management System Functional Architecture

中文关键词:  发动机健康管理系统  架构设计  逻辑决断图  层次分析法  功能分配

英文关键词:engine health management system  architecture design  logical decision diagram  analytic hierarchy process  function allocation

中文摘要:

      航空发动机健康管理系统是目前先进发动机提升自身安全性、可靠性以及经济可承受性的核心系统之一，而架构设计 是该系统的关键技术，高效合理的系统架构能够充分发挥系统的功能与作用。针对航空发动机健康管理系统架构设计需求，为了 提升系统架构的高效性、合理性，实现系统功能的最优分配，开展航空发动机健康管理系统功能架构优化方法研究。比较和分析 了国外发动机和飞机健康管理系统功能架构，总结了健康管理系统共同特征，并结合健康管理系统用户需求分析，提炼形成通用 的发动机健康管理系统功能架构；基于该架构采用逻辑决断图和层次分析法（AHP），提出了一种针对部件和故障的功能分配方 法。结果表明：所提出的分配方法可实现状态监测、故障诊断、故障预测、寿命管理及趋势分析功能向机载和地面系统的定性与定 量分配；在军民用航空发动机健康管理系统设计中，可应用通用健康管理系统架构实现发动机健康管理系统核心功能及用户需求 的全面覆盖，并根据发动机结构及特点采用功能分配方法实现机载、地面系统功能的优化配置。

英文摘要:

      Aeroengine health management system is one of the core systems for advanced engines to improve their safety, reliability, and affordability. The design for its architecture is the key technology of aeroengine health management systems. An efficient and reason? able system architecture can give full play to the functions of the system. According to the design requirements of the aeroengine health management system architecture, aiming at improving the efficiency and rationality of the system architecture and achieving the optimal distribution of system functions, the optimization method of the aeroengine health management system functional architecture was studied. In this paper, functional architectures of foreign aeroengine and aircraft health management systems were compared and analyzed, and their common characteristics were summarized. Combined with user requirements analyses of the health management system, a general functional architecture of engine health management systems was formed; Based on this architecture, a function allocation method for components and faults was proposed by using logical decision diagrams and analytic hierarchy process (AHP), The results show that the proposed allocation method can realize the qualitative and quantitative allocation of state monitoring, fault diagnosis, fault prediction, life management and trend analysis functions to airborne and ground systems. In the design of military and civil aeroengine health management systems, the general health management system architecture can be applied to realize the comprehensive coverage of the core functions and user requirements of the engine health management system, and the function allocation method can be used to realize the optimal configura? tion of airborne and ground system functions according to the engine structure and characteristics.