Vibration and Noise Control Technology for High-speed Railway

Abstract

The operation of high-speed railway will cause environmental noise and vibration problems, which will directly affect the sustainable development of railway station's comprehensive development. In solving this problem, the traditional method generally considers the three aspects of sound source, vibration source and propagation path, but often fail to achieve satisfactory control effect. This paper presents a high-speed railway vibration and noise control technology based on linear feedback matching filter. Firstly, the propagation path model of noise in high-speed railway station is constructed and the noise signal is separated. At the same time, linear feedback matching filter technique is used to make in-phase addition to the propagating sound. The linear feedback filter is designed by combining the binary wavelet technique to suppress the noise and vibration. The results show that the proposed technique overcomes the weakness of conventional control model and the noise vibration control is smoother than that of the traditional method.