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中文摘要：
烟机机械故障信号往往是非平稳的，联合时频分布是机械故障信号分析的有力工具，Wigner-Ville分布是一种真正意义上的时频分析方法，结合Wigner—Ville分布的基本特点以及其分析方法与思想重点针对烟机机械故障非平稳信号分析的一些问题进行讨论，同时将运用三维Wigner分布图对其机械故障进行分析。
英文摘要：
Machine fault signal of fume turbine was usually composed of non-stationary signals. Joint time frequency was a powerful tool to analyze machine fault signa,Wigner-ville distribation is the true to type of time-frequency analysis methods ,The emphasis is placed on studying of some problem of nonstationary signals analysis of fume turbine machine fanlt on thought of analysis method of Wigner distribution,at the the basis of the characters and the fundamental same time,The faults are investigated by 3D-Wigner distribution plot
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