摘要
引入主成分、相关系数矩阵、主成分贡献率及累计贡献率等概念,得出影响航空发动机性能的各个主成分,采用基于主成分分析的综合评估方法对发动机性能进行评估。与单参数性能评估方法相比,多参数性能综合评估方法更加客观有效,在对发动机进行性能评估时大大减少了出错的概率,并指出航空发动机多参数性能综合评估在工程应用的局限。
In the projects of aero- engine, principal component analysis method is used to estimate the performance of aero- engine,by bringing some definitions such as principal component, relevance coefficient matrix, contribution quotiety of principal component, accumulative contributionquotiety, ere, to get every principal component which influent the performance of aero- engine. Compared with single- parameter es- timation method, there is little error with multi- parameters analysis method . And at the same time, multi - parameters analysis method include with single- parameter estimation method. It can also put every valu- able parameter together, not like single- parameter one just take one parameter into account, for example, people only take EGT or FF into consideration when they use single- parameter estimation method to esti- mate the performance of aero- engine. Of course, with multi- parameters analysis method, aero- engine en- gineers can do their jobs more accurately. With the development of engineering technique, multi- parame- ters estimation method will substitute for single- parameter estimation method to assess the performance of aero- engine in the performance synthetic estimation and fault diagnosis projects.
出处
《航空计算技术》
2016年第5期92-94,98,共4页
Aeronautical Computing Technique
基金
广东省高等学校优秀青年教师培养计划项目资助(YQ2014178)
关键词
航空发动机
性能综合评估
多参数评估
主成分分析
aero- engine
performance synthetic estimation
multi - parameters estimation
principle component analysis
