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基于经验模态分解与差分包络谱的齿轮故障诊断

Computer Measurement & Control(2021)

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Abstract
为了准确地进行齿轮故障诊断,结合经验模态分解与纯调频信号差分包络谱,对齿轮故障诊断提出了一种新方法;首先,对齿轮振动信号进行经验模态分解得到多个不同分量;其次,根据峭度最大分量及其相邻分量的峭度值情况,合成有效分量;然后,运用经验调幅-调频分解得到纯调频信号;接着,将纯调频信号应用经验调幅-调频分解及傅里叶变换得到纯调频信号差分包络谱;最后,观察分析纯调频信号的差分包络谱进行故障诊断;利用该方法对断齿齿轮的振动信号进行分析,验证了方法的有效性.
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