| 刘楠,金静飞.燃料电池有轨电车声学优化*[J].,2018,37(3):407-412 |
| 燃料电池有轨电车声学优化* |
| Acoustics optimization of fuel cell tram |
| 投稿时间：2017-06-28 修订日期：2018-04-25 |
| 中文摘要: |
| 基于线路噪声试验，系统测试分析了燃料电池有轨电车噪声特性，研究了噪声分布以及空气传声、结构传声路径对噪声的贡献。研究结构表明改善车地板、空调、顶板和风挡的隔声性能，尤其是在500~1250 Hz的1/3倍频带范围内的隔声性能将有助于改善车辆内部声学环境。优化燃料电池系统控制，降低冷却单元转速将有助于改善车辆外部声学环境。在此基础上提出减震降噪建议措施，再次进行线路噪声试验，试验结果措施有效。 |
| 英文摘要: |
| Based on field measurement, the characteristics of the noise source of fuel cell tram are analyzed in this work. The interior noise sources and the contributions of the air-borne and the structural-borne sound are identified. The results show that improving the sound insulation performance of the floor, roof and vestibule diaphragm, especially in the frequency of 500~1250 Hz 1/3 octave band will help to improve the acoustic environment of the tram interior. Optimal control of fuel cell system and reducing the cooling unit speed will help improve vehicle exterior acoustic environment. Base on the Analysis, this paper puts forward the suggestion of the shock absorption and noise reduction in the car, and carries out type test of vehicle interior noise, and the results are effective. |
| DOI：10.11684/j.issn.1000-310X.2018.03.014 |
| 中文关键词: 噪声 燃料电池有轨电车 声源识别 空气传声 结构传声 减震降噪 |
| 英文关键词: noise fuel cell tram noise soure identification air-borne sound structural-borne sound noise and vibration control |
| 基金项目:国家科技支持项目（2014BG08B02） |
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