基于混杂系统的航空发动机性能退化行为建模及分析  

Modeling and performance degradation analysis of aero-engine hybrid system

作　　者：陈盼盼 文振华[1] 冯俊杰 任淑红[1] 陈蔚蔚 CHEN Panpan;WEN Zhenhua;FENG Junjie;REN Shuhong;CHEN Weiwei(School of Aero-engine,Zhengzhou University of Aeronautics,Zhengzhou 450046,China;AECC Sichuan Gas Turbine Establishment,Chengdu 610500,China)

机构地区：[1]郑州航空工业管理学院航空发动机学院,郑州450046 [2]中国航发四川燃气涡轮研究院,成都610500

出　　处：《燃气涡轮试验与研究》2023年第2期22-27,共6页Gas Turbine Experiment and Research

基　　金：国家自然科学基金(51975539);航空科学基金(2018ZD55008)。

摘　　要：航空发动机起飞时的排气温度裕度(EGTM)除受本身部件特性的影响外,发动机水洗、鸟击以及维修等离散事件也均能引起其突变。首先建立了发动机部件特性模型,分析了部件性能退化对EGTM的影响;然后引入支持向量回归机方法,预测了水洗事件对EGTM的影响;最后基于混杂系统模型,综合考虑了部件特性和水洗事件对EGTM的影响。通过仿真建模分析得出:与仅考虑部件性能退化相比,考虑水洗事件的发动机性能退化过程,预计可延长发动机在翼时间约1000飞行循环。基于此,可以为发动机下发决策提供参考依据。The performance degradation degree of aero-engine is usually described by the exhaust gas temperature margin(EGTM)at take-off.In addition to the influence of the performance of the engine itself,the discrete events such as engine washing,bird strike and maintenance can cause the mutation of the parameter.A characteristic model for engine components was established and effects of component performance degradation on EGTM were analyzed.The support vector regression machine approach was then presented to forecast how water washing events affect EGTM.Finally,a thorough analysis of the impact of component properties and water washing events on EGTM was performed using the hybrid system model.The simulation modeling analysis results show that compared with only considering component performance degradation,considering the engine performance degradation process of the washing event is expected to extend the engine's on-wing time by about 1000 flight cycles which can provide a reference for the decision-making of the engine removal.

关 键 词：航空发动机 混杂系统建模 性能退化分析 水洗间隔预测 支持向量回归机 

分 类 号：V235.13[航空宇航科学与技术—航空宇航推进理论与工程]