航空发动机转静子碰摩故障信号用小波分析的方法检测和分析OACSCDCSTPCD
Detection and Analysis ofAeroengine Rotor-stator Rubbing Trouble using Wavelet Analysis
针对试飞中发动机转静子碰摩故障信号,首先应用小波阈值方法对原始信号进行降噪处理,由此滤除高频噪声干扰,同时可保留含有重要故障特征的突变信息；对降噪后信号进行连续小波变换,时频分析结果具有很好的实时跟踪转速频率能力,且频带清晰,故障特征明显,为今后真实飞行载荷下的实时故障监测提供一种有效途径.
The rotor-stator rubbing signals of aeroengines in flight test are processed and analyzed. Firstly the original signal is denoised by wavelet threshold method so that the high-frequency noise is filtered and the saltatory information including important fault characteristics is reserved. Then the denoised signal is processed by continuous wavelet transform. The result from time-frequency analysis shows that it has a strong capability to track the rotor frequ…查看全部>>
符娆;张群岩;赵述元
中国飞行试验研究院,西安710089中国飞行试验研究院,西安710089中国飞行试验研究院,西安710089
航空航天
振动与波航空发动机碰摩小波阈值降噪小波分析
vibration and waveaeroenginerub-impactwavelet threshold denosingwavelet analysis
《噪声与振动控制》 2012 (1)
124-127,4
评论