Combining wavelet Packet Decomposition with energy spectrum analysis method,it is proposed that the interval wavelet packet which is based on partial-band wavelet packet energy is used to extract the signal feature.
然后结合小波包分析和能量谱分析方法提出了基于频带局部能量的区间小波包特征提取方法。
参考来源 - 装甲车发动机故障诊断系统的研究Through processing and analysis of many data, the diagnosis result is satisfactory. It shows that wavelet package analysis can supply a convincing analysis means for rolling bearings fault diagnosis.
经过大量实测数据的处理和分析,诊断结果是令人满意的,这说明小波包分析确实为滚动轴承故障诊断提供了强有力的分析手段。
参考来源 - 基于小波分析的滚动轴承故障诊断方法研究Result shows: Spectrum analysis has certain variety regulation with the position's variety and the size of the empty defects, and expresses defect spectrum abundance, so Wavelet analysis can used in further disposal.
结果表明,频谱分析能判断孔洞缺陷的大小和位置的变化规律,并表明缺陷信号频谱丰富,可用于进一步进行小波包分析。
参考来源 - 基于能量法木材孔洞缺陷的超声定量检测研究·2,447,543篇论文数据，部分数据来源于NoteExpress
然后研究了基于小波包分析的结构实时损伤检测技术，并以简支梁裂缝为例说明。
And then, the real-time structural damage detection technology is studied based on wavelet packet analysis. The method is applied to detect simple-supported beam cracks.
结果表明基于小波包分析的滤波方法能有效减小随机误差，提高激光陀螺的测量精度。
The result shows that the filtering algorithm based on wavelet packet analysis can decrease the random error and improve the measuring precision of laser gyro effectively.
首先对采样的零序暂态电流信号做增强处理，然后利用小波包分析方法进行故障选线。
First the zero sequence transient current signal sampled is enhanced, and then the signal enhanced is decomposed by using wavelet packet analysis to realize faulty line detection.
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