基于逻辑回归的APU性能状况评估
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    摘要:

    针对飞机辅助动力装置(Auxiliary Power Unit,简称APU)性能评估研究中单参数评估不全面的问题,提出了基于逻辑回归模型的方法,融合多参数来对飞机APU性能状况进行全面评估。首先,对APU参数数据来源进行分析,选择基于实时报文数据的APU性能评估方法,并结合APU的工作原理以及实际工作情况,挑选出可以反映APU性能状态的特征参数,然后利用主成分分析法(Principal Component Analysis,简称PCA)对原始特征参数进行降维处理。其次,以APU正常性能状态历史数据和性能严重衰退状态历史数据建立逻辑回归模型。最后,根据回归模型得到APU全寿命周期的健康指数(Health Index,简称HI)并对其进行验证。结果表明,APU性能健康指数曲线能很好的反映APU各个阶段的性能变化情况,可以为后续的视情维修策略的制定提供技术参考。

    Abstract:

    To solve the problem of incomplete single parameter evaluation in the performance evaluation of auxiliary power units (APU), this paper presented a method based on the logistic regression model for a complete performance evaluation of APU by integrating multiple parameters. Firstly, the source of APU parameter data was analyzed; a method for APU performance evaluation based on realtime message data was selected. Combined with the operating principle and real working condition of the APU, characteristic parameters that can reflect its performance were selected, and then the original characteristic parameters were reduced by principal component analysis (PCA). Secondly, the logistic regression model was built with the historical data of the APU in normal and severely degraded performances. Lastly, the health index (HI) of APU life cycle was obtained and verified based on the regression model. The results show that the APU performance health index curve can well reflect the performance changes of APU in each stage, and can provide technical reference for the subsequent development of condition based maintenance strategy. The results show that the health index curve of APU performance can well reflect its changes in different periods, and can provide technical references for the later formulation of oncondition maintenance strategies.

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向阳.基于逻辑回归的APU性能状况评估[J].民用飞机设计与研 究,2021(2):67-72XIANG Yang.[J]. Civil Aircraft Design and Research,2021,(2):67-72. ( in Chinese)

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  • 在线发布日期: 2021-07-08
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