提出一种基于经验模态分解（EMD）的水轮发电机组局部放电信号提取方法。
This paper investigates a new method of extracting partial discharge signals of hydroelectric generating set based on empirical mode decomposition (EMD).
针对传统滤波方法处理非平稳信号的不足，提出利用经验模态分解法来处理转子启动信号，通过此方法的自适应滤波特性来提取这类信号中的低频分量。
This paper describes a method to extract the low frequency component from rotor startup signal based on empirical mode decomposition, which overcomes the difficulties of traditional filter methods.
提出了一种基于模态频率的声信号频域特征信息提取方法，并将该方法用于堆垛机结构的冲击载荷分类识别研究。
A new approach is presented for feature extraction from sound signals generated by the structure sound radiation in frequency domain using modal frequency.
而本方法只基于实验数据可以同时提取内波模态函数及其模态系数。
But in this part, internal waves' mode functions and mode coefficients are extracting from experimental data at the same time.
叙述了运用随机减量法获取自由响应的基本原理以及模态参数的提取方法。
The theory of free response from random decrement technique and model parameter identification are researched; wheel sets of locomotive and vehicle are the research object of this paper.
针对红外图像中的小目标检测，提出了一种利用经验模态分解(EMD)提取海空背景下红外弱小目标的新方法。
A new method was provided based on the empirical mode decomposition (EMD) to solve the difficulties of infrared image dim small target detection in complex background of sky and sea.
在此方法分析的基础上，应用Ansys软件提取结构的低阶模态，对压电元件的位置进行优化布置。
Based on this analysis method, low mode shapes of flexible structure are extracted by the application of ANSYS software to search for the optimal locations of piezoelectric patches.
还给出了从实际测量中提取模态坐标和将模态控制力转换成实际控制力的方法。
In addition, the extraction of modal coordinates from actual measurement and the transformation of actual control force from the modal control force are presented in this paper too.
并利用该方法对某型号卫星进行模态参数识别，与模态试验相比，结果比较理想，从而实现了利用正弦振动试验的数据提取模态参数的目的。
The method is used to identify modal parameters of a satellite. Comparing with the modal test, the results are fairly well, which shows the validity of identifying modal parameters using sine…
并利用该方法对某型号卫星进行模态参数识别，与模态试验相比，结果比较理想，从而实现了利用正弦振动试验的数据提取模态参数的目的。
The method is used to identify modal parameters of a satellite. Comparing with the modal test, the results are fairly well, which shows the validity of identifying modal parameters using sine…
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