基于支持向量回归机的民航发动机可调放气阀门工作基线的研究  

Research on Variable Bleed Valve Baseline of Civil Aviation Turbo-Fan Engine Based on Support Vector Machine

作　　者：谭燕[1] 魏武国[2] TAN Yan;WEI Wu-guo(Aero Engine Maintenance Training Center,Civil Aviation Flight University of China,Guanghan 618307,China;Aero Engineering Institute,Civil Aviation Flight University of China,Guanghan 618307,China)

机构地区：[1]中国民航飞行学院航空发动机维修培训中心,四川广汉618307 [2]中国民航飞行学院航空工程学院,四川广汉618307

出　　处：《数学的实践与认识》2020年第12期22-27,共6页Mathematics in Practice and Theory

基　　金：四川省教育厅科研项目(18ZB0684)。

摘　　要：可调放气阀门(variable bleed valve,VBV)是民航涡扇发动机用于控制压气机空气流量,防止压气机喘振的重要机构.由于当前的民航涡扇发动机基本都由国外公司生产,航空公司无法获知发动机各工作阀门的控制原理与部件特性,因此航空公司均完全依赖国外生产厂家对阀门进行视情监控与故障诊断.采用了支持向量回归机算法(support vector regression machine,SVR),利用飞机快速存储记录器(quick access recorder,QAR)的数据,针对民航主流机型CFM56-7B发动机建立了其VBV阀门工作基线的多参数回归模型.模型经过交叉验证,其结果表明本文所构建的多参数回归模型能够较好地反映VBV阀门的工作基线,可以满足民航对VBV阀门进行监控和排故的需要.Variable bleed valve(VBV)is an important mechanism used by civil aviation turbo-fan engine to control compressor airflow,thus to prevent engine surge.However,since most of civil aviation turbo-fan engine are produced by foreign manufactures,the component characteristics and control principles of engine valves are not provided.As a result,condition monitoring and fault diagnosis of VBV cannot be done by Chinese airlines without the help of foreign manufactures.Adopting support vector regression machine(SVR),using the quick access recorder(QAR)data,a multi parameter regression model of VBV operation baseline is built for CFM56-7B engine that is the most mainstream civil aviation engine.The results of cross validation shows that this model could perfectly reflect the VBV operation baseline,which could be used for VBV condition monitoring and fault diagnosis by civil airlines.

关 键 词：可调放气阀门 快速存储纪录器 支持向量回归机 多参数基线回归模型 

分 类 号：V233[航空宇航科学与技术—航空宇航推进理论与工程]