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基于单类支持向量机的航空发动机故障检测

曹惠玲1,杨路1,林钰森2,曲春刚1   

  1. (1.taptap下载安装安卓航空工程学院,天津300300;2.中国民航科学技术研究院,北京100028)
  • 收稿日期:2012-06-11 修回日期:2012-09-10 出版日期:2013-12-11 发布日期:2013-12-12
  • 作者简介:曹惠玲(1962—),女,河北唐山人,教授,工学博士,研究方向为航空发动机性能分析与故障诊断.
  • 基金资助:

    taptap下载安装安卓科研基金项目(08CAUC-E01)

Aero-engine fault detection based on one-class support vector machine

CAO Hui-ling1,YANG Lu1,LIN Yu-sen2,QU Chun-gang1   

  1. (1. College of Aeronautical Engineering,CAUC,Tianjin 300300,China;
    2.China Academy of Civil Aviation Science and Technology,Beijing 100028,China)
  • Received:2012-06-11 Revised:2012-09-10 Online:2013-12-11 Published:2013-12-12

摘要:

通过监控航空发动机性能参数,准确判断发动机的工作状态,预知发动机的异常变化,为预防和排除故障提供充足的时间和决策依据。开发出利用QAR(quick access recorder,快速存取记录器)数据的发动机故障检测系统,该系统基于民航发动机的QAR数据,由于发动机正常运行数据容易获取,而故障样本难以获得,因而采用单类支持向量机(OCSVM),仅依靠发动机的健康数据建立其分类器。利用OCSVM 分类器,监控后续航班参数是否出现异常,通过分析检测结果,实现发动机故障检测。采用该系统监控航空发动机性能参数,及时发现发动机运行状态异常,证明了系统的可行性和有效性。

关键词: 航空发动机, 单类支持向量机, 故障检测, QAR

Abstract:

By monitoring the aero-engine performance parameters,the engine state can be accurately determined and the engine performance can be predicted in advance,providing adequate time and decision-making basis for the prevention and troubleshooting. Yielding to a health model by using one-class support vector machine(OCSVM),meanwhile the data sample of normal running status is easier to gain,aero-engine fault detection system is designed based on the quick access recorder (QAR)data of the civil aviation engine. Furthermore,the follow-up flights parameters can be monitored by using OCSVM classification. Ultimately,the engine operation status and performance trend can be obtained. The monitoring results of aero-engine performance parameters show that the faults can be detected in advance and demonstrate the feasibility and effectiveness of this system.

Key words: aero-engine, OCSVM, fault detection, QAR

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