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首页> 外文会议>3rd International Workshop on Structural Health Monitoring, Sep 12-14, 2001, Stanford University >Adaptive Signal Representations for Helicopter Transmission Diagnostics
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Adaptive Signal Representations for Helicopter Transmission Diagnostics

机译：直升机传输诊断的自适应信号表示

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摘要

This paper presents a summary of the adaptive lifting algorithm and demonstrates its potential benefits to helicopter transmission diagnostics. The adaptive lifting algorithm is an adaptive signal representation technique constructed within the framework of the lifting scheme, a time domain, prediction-error realization of the wavelet transform. Adaptive lifting enables a diagnostic algorithm to tailor itself to a specific transmission by selecting a set of wavelet basis functions that best represent the vibration signals obtained from that transmission while under nominal operation conditions. Use of the selected basis set for vibration signal analysis should increase sensitivity to changes in the signal associated with damage. In this work, the adaptive lifting algorithm is used to analyze data collected from the University of Maryland Transmission Test Rig and the results are discussed.
机译：本文概述了自适应提升算法，并展示了其对直升机传输诊断的潜在好处。自适应提升算法是在提升方案，时域，小波变换的预测误差实现的框架内构建的自适应信号表示技术。自适应提升可以通过选择一组小波基函数来使诊断算法针对特定的变速箱进行量身定制，这些功能最好地表示在标称运行条件下从该变速箱获得的振动信号。使用选定的基础集进行振动信号分析应提高对与损坏相关的信号变化的敏感性。在这项工作中，自适应提升算法用于分析从马里兰大学变速箱试验台收集的数据，并对结果进行了讨论。

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