A core problem discussed in this paper is using Local Wave decomposition method and Hilbert spectrum to analyse nonlinear and non-stationary data.
用局域波分解方法和Hilbert时频谱分析非平稳非线性数据是本文研究的核心问题。
参考来源 - 局域波时频分析方法的理论研究与应用And it is applied to the diagnosis project of machine. The integrated method contains Local-Wave Decomposition theory, Principal Component Analysis theory and Time Series Analysis theory.
这种综合诊断方法中包含了局域波分解理论、主分量分析理论及时序分析理论。
参考来源 - 基于主分量分析的挤压机故障诊断研究·2,447,543篇论文数据，部分数据来源于NoteExpress
而局域波分解法是一种新的分析非平稳、非线性的工具。
The local wave decomposition method is a new method to analyse instability and nonlinearity.
对局域波分解算法的改进和局域波分析的应用具有参考价值。
The research is helpful to the improvement of local wave decomposition algorithm and the applications of local wave analysis.
对信号进行局域波分解后，建立基于时频分布的信息熵，以此作为故障识别的参数。
After signal local wave decomposition, the information entropy according to time-frequency distribution was established, and it was used as characteristic parameter for fault recognition.
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