摘要
从离心式压缩机振动和噪声信号的功率谱出发,研究了其振动和噪声的相干性。对比振动和噪声的功率谱,找出二者的特性与联系。最后经过相干变换得到振动和噪声的相干关系,并结合工程实践,证明相干性分析在离心式压缩机噪声源识别领域的可行性。
In this paper, the coherent of vibration and noise is investigated according to the power spectrum of vibration and noise signals of centrifugal compressor. By comparing the power spectrum of vibration and noise, the characteristics and relationship of them are found out. Then coherent transform is applied to obtain the coherent relationship of vibration and noise. According to project practice, the feasibility of coherent analysis has been proved in the field of the noise source identification for centrifugal compressor.
出处
《风机技术》
2008年第1期7-9,15,共4页
Chinese Journal of Turbomachinery
关键词
离心式压缩机
相干分析
噪声源
centrifugal compressor
coherent analysis
noise source
