基于波束形成发动机啸叫声源识别及控制研究
蒋忠翰,王新文,陈寒霜,李智
(广州汽车集团股份有限公司 汽车工程研究院,广东 广州 511434)
摘要:某在研汽车加速过程中发动机会产生高频啸叫。经研究,该啸叫为阶次噪声,阶次为63阶;运用基于互谱成像波束形成方法进行声源识别,结果表明:该阶次声辐射源为张紧轮。进一步,对其高频啸叫的产生机理进行分析,提出一种内部光滑的张紧轮代替原张紧轮的改进措施,试验结果表明:63阶噪声峰值得到有效消除;主观感受高频啸叫声改善明显,有效提升了驾驶品质感。
关键词:高频啸叫;阶次噪声;声源识别;张紧轮
中图分类号:U464 文献标志码:A doi:10.3969/j.issn.1006-0316.2017.07.015
文章编号:1006-0316 (2017) 07-0062-04
Engine Whistle Noise Identification and Control Based on Beamforming
JIANG Zhonghan,WANG Xinwen,CHEN Hanshuang,LI Zhi
( Automotive Engineering Institute, Guangzhou Automobile Group Co., Ltd., Guangzhou 511434, China )
Abstract:A high frequency whistle noise was generated by an engine during the accelerating mode. According to research which whistle came from the 63rd Order noise; based on noise source identification method of Beamforming, the result indicated that the Order noise radiated from the tension wheel. Through the analysis how the noise occur, a kind of internal smooth tension was taken to replace the original state. Furthermore, experiment results show that the 63rd Order noise had been reduced effectively. The high frequency whistle is eliminated and the sound quality is improved obviously.
Key words:high frequency whistle;order noise;noise source identification;tension wheel
———————————————
收稿日期:2017-01-06
基金项目:广东省产学研合作院士工作站项目(2013B090400002)
作者简介:蒋忠翰(1987-),男,贵州六盘水人,硕士,NVH测试工程师,主要从事整车NVH测试调校及开发工作.。
 

 

设为首页  |  加入收藏    |   免责条款
《机械》杂志版权所有     Copyright©2008-2012 Jixiezazhi.com All Rights Reserved 

  电话:028-85925070    传真:028-85925073    E-mail:jixie@vip.163.com

地址:四川省成都锦江工业开发区墨香路48号   邮编:610063

蜀ICP备08103512号

Powered by PageAdmin CMS