论文部分内容阅读
对某型强迫风冷式地铁车辆辅助变流器进行了运行噪声识别研究,针对振动、噪声源及其传播途径设计了相应的减振、吸声和导风声学结构优化等降噪方案并开展了整体降噪方案的实施和试验评价。试验结果表明,通过采用这一系列降噪方案,变流器的运行噪声得到明显控制。
The noise of a certain type of forced air-cooled subway vehicle auxiliary converter is studied, and the corresponding noise reduction schemes such as vibration damping, sound absorption and air conduction acoustic structure optimization are designed and implemented according to the vibration, noise sources and their propagation routes The implementation of the overall noise reduction program and test evaluation. The experimental results show that by adopting this series of noise reduction schemes, the operational noise of the converter is obviously controlled.