噪声与振动控制2016，Vol.36Issue(4)：151-155,5.DOI:10.3969/j.issn.1006-1335.2016.04.032
小波分析在汽车空调启动异响诊断中的应用
Application of Wavelet Analysis to Vehicle AC-ON Abnormal Sound Diagnosis
摘要
Abstract
Abnormal noise starts inside vehicles as soon as the air-conditioning (AC) ON button is pressed and AC system starts working. In this paper, the cause and influencing factors of this AC-ON noise are investigated to solve for the problem. Interior sound pressure and acceleration signals of the compressor and the thermal expansion valve (TXV) are measured using B&K signal acquisition system. The appropriate wavelet base and wavelet parameters are chosen to analyze the wavelet energy spectrum of the signals. It is found that the AC-ON abnormal noise is caused by compressor’s activating impact and the TXV vibration. Countermeasures of isolation and damping are applied to the compressor and the TXV. As a result, the compressor activating impact and the vibration of TXV as well as the AC-ON noise are significantly reduced.关键词
振动与波/空调启动/车内异响/小波分析/压缩机吸合冲击/膨胀阀Key words
vibration and wave/AC-ON/interior abnormal noise/wavelet analysis/compressor’s activating impact/thermal expansion valve分类
通用工业技术引用本文复制引用
杨诚,肖尧,胡美龙..小波分析在汽车空调启动异响诊断中的应用[J].噪声与振动控制,2016,36(4):151-155,5.基金项目
重庆大学中央高校基本业务费项目 （）
