ENGINE NOISE CHARACTERIZATION WITH WIGNER-VILLE TIME-FREQUENCY ANALYSIS

被引：23

作者：

CHIOLLAZ, M

FAVRE, B

机构：

[1] Laboratoìre Traìtement du Signal, ICPI, Lyon

[2] Direction de la Recherche, Lyon

来源：

MECHANICAL SYSTEMS AND SIGNAL PROCESSING | 1993年 / 7卷 / 05期

关键词：

D O I：

10.1006/mssp.1993.1022

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Reduction in the sound emitted by engines requires accurate identification of the excitation and propagation mechanisms inside the engine. Time-frequency analysis of vibration signals picked up on the outside and inside of an engine cylinder enables us to link every event observed in the time-frequency plane to one excitation source. It is then possible to measure the energy of each event and to quantify the part of each excitation mechanism in the vibration energy which is emitted towards the outside of the engine. © 1993 by Academic Press, Limited.

引用

页码：375 / 400

页数：26

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