主办：陕西省汽车工程学会
ISSN 1671-7988  CN 61-1394/TH
创刊：1976年
汽车实用技术

汽车实用技术 ›› 2024, Vol. 49 ›› Issue (15): 83-88.DOI: 10.16638/j.cnki.1671-7988.2024.015.017

• 测试试验 • 上一篇    

基于振速法和 1/3 倍频程谱的座椅噪声 评定系统研究

陈 健 1，喻肇斌*2   

  1. 1.浙江大学医学院附属口腔医院 医学装备中心； 2.江铃汽车股份有限公司
  • 发布日期:2024-08-12
  • 通讯作者: 喻肇斌
  • 作者简介:陈健（1989－），男，硕士，工程师，研究方向为人工智能检测，E-mail:7519015@zju.edu.cn。 通信作者：喻肇斌（1989－），男，硕士，工程师，研究方向为汽车 NVH 测试，E-mail:877269452@qq.com。
  • 基金资助:
    浙江省软科学研究计划项目（2024C35100）。

Research on Evaluation System of Auto Seat Noise Based on Vibration Velocity Method and 1/3 Octave Spectrum

CHEN Jian1 , YU Zhaobin*2   

  1. 1.Department of Medical Engineering, Stomatology Hospital, Zhejiang University School of Medicine; 2.Jiangling Motors Company Limited
  • Published:2024-08-12
  • Contact: YU Zhaobin

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摘要： 国内汽车座椅噪声检测主要是在环境噪音不超过 30 dB 左右的消声室中采用声级计进 行检测，其建设成本高、检测效率低，不适宜工业现场生产。文章基于振速法获取噪声数据， 该方法测试时可避免工业生产现场的背景声和反射声干扰。通过 1/3 倍频程谱方法缩小频率 分析范围，并对各个频带的声功率级进行叠加处理后进行分析评定。系统硬件由成本较低的 加速度传感器、电荷放大器、数据采集卡和上位机等部分搭建，经测试证明该系统运行效率 高、监测评定数据可靠。该在线监测评定系统提升了汽车制造企业生产效率、降低生产成本、 提升汽车制造性能，可广泛推广到汽车生产企业制造生产线中。

关键词: 汽车座椅噪声；振速法；1/3 倍频程谱；在线监测评定系统

Abstract: The domestic auto seat noise detection is mainly in anechoic chamber which requires the ambient noise under 30 dB. This method exists a lot of limitations such as high construction cost, low detection efficiency and unsuitable for industrial production sites. This paper is based on the vibration velocity method which avoids interference from background and reflected sound in industrial production sites during testing. The frequency analysis range is reduced by 1/3 octave spectrum method. The sound power levels of each frequency band are analyzed and evaluated after superposition processing. The hardwares of system are composed of acceleration sensor, charge amplifier, data acquisition card and host computer which are low cost. The test results show that the system has high operating efficiency and reliable monitoring and evaluation data. The online monitoring and evaluation system can improve the efficiency, reduce costs, and improve automotive manufacturing performance of automotive manufacturing enterprises. The system can be widely promoted in the production lines of automotive manufacturing enterprises.

Key words: Auto seat noise; Vibration velocity method; 1/3 Octave spectrum; On-line monitoring and evaluation system