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中文摘要：
将全矢谱理论在旋转机械故障诊断中的优越性与传统复调制细化分析方法相结合，复调制细化全矢谱（zoom vector spectrum，ZVS）的原理为，两次频移-低通滤波-隔D（细化倍数）点选抽-FFT（fast Fourier transform）-计算全矢谱。其兼具信息全面和高分辨率的特点，运算量远小于具有相同分辨率的普通全矢谱。仿真计算表明，复调制细化全矢谱可应用于旋转机械故障诊断中，对频谱密集型多源融合矢量信号进行有效分析。
英文摘要：
Associating the merits of the vector spectrum in rotary machine fault diagnosis with the traditional zoom-FFT（zoom fast Fourier transform）, the principle of the complex modulation zoom vector spectrum（ZVS） was： two frequency-shiftings, low-pass filtering, sub-sampling at a rate of D,making FFT（fast Fourier transform） and calculating the vector spectrum. It was provided with the characteristics of full information and high resolution and its computation load was less than that of the ordinary vector spectrum with the same resolution. The simulation shows that the complex modulation zoom vector spectrum can be used in rotary machine fault diagnosis and is an efficient tool for the analysis of the multi-sources fusion vector signal with intensive spectrum.
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