摘要
传统的高速动车组噪声控制多采用吸隔声、减振等被动降噪方法,对中高频噪声的控制效果明显。但通过传统方法降低低频噪声,往往受到限制并且效果不明显。主动噪声控制技术的应用可有效降低低频噪声,弥补被动噪声控制的不足。鉴于主动噪声控制在误差传感器附近形成安静区域的缺点,将虚拟传声器理论引入到主动噪声控制中,可进一步扩大主动噪声控制的应用范围。基于虚拟传感器技术的原理样机,经验证在实验室内可达到10～17dB的降噪效果,在高速动车组实际运行过程中达到约2.5dB的降噪效果,实际运行中效果并不特别明显,但相比其他算法具有良好的应用前景。结合既有的研究成果,为提高动车组实际运行时的主动降噪效果需对客室内噪声来源、声场分布等特性做进一步的研究分析。
The traditional noise control method of high speed railway is mostly passive noise reduction, such as sound insulation, vibra tion damping and so on. It is very effective for middle and high frequency noise control which is limited and not very useful for lower frequency. The proposed of active noise control technology can meet the actual demand, and has developed into an important way to re duce the low frequency noise. In view of the shortcoming that active noise control only forms a quiet area near the error sensor, the the ory of virtual microphone is introduced into active noise control, which further expands the application scope of active noise control. The effect of noise reduction has reached 10 17 dB in the laboratory and 2.5 dB in the practice, but compared with other algorithm, it has a good application effect. Further research about noise source an acoustic field distribution and so on will be clone in the future.
作者
高攀
董孝卿
陈彪
蒋成成
田朋溢
GAO Pan;DONG Xiaoqing;CHEN Biao;JIANG Chengcheng;TIAN Pengyi(Locomotive ＆ Car Research Institute,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China)
出处
《铁道机车车辆》
北大核心
2018年第5期12-14,21,共4页
Railway Locomotive & Car
基金
中国铁路总公司科技研究开发计划课题(2016J011-I)
中国铁道科学研究院科研项目(2016YJ006)
铁道科学技术研究发展中心科研项目(J2015Z014)资助项目
关键词
高速列车噪声控制
主动噪声控制
虚拟传声器
High speed railway noise control
active noise control
virtual microphone
