Reduction of external noise of mobile energy facilities by using active noise control system in muffler

International Conference on Mechanical Engineering, Automation and Control Systems 2017

机械制造;无线电电子学;计算机科学

Polivaev, O.I.^1 ; Kuznetsov, A.N.^1 ; Larionov, A.N.^1 ; Beliansky, R.G.^1

Voronezh State Agricultural University, Michurina St. 1, Voronezh

394087, Russia^1

关键词: Acoustic comfort;    Automotive vehicle;    External noise;    Low-frequency;    Low-Frequency Noise;    Low-frequency sounds;    Noise levels;    Reducing emissions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/327/4/042082/pdf
DOI  :  10.1088/1757-899X/327/4/042082

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

The paper describes a method for the reducing emission of low-frequency noise of modern automotive vehicles into the environment. The importance of reducing the external noise of modern mobile energy facilities made in Russia is substantiated. Standard methods for controlling external noise in technology are of low efficiency when low-frequency sound waves are reduced. In this case, it is in the low-frequency zone of the sound range that the main power of the noise emitted by the machinery lies. The most effective way to reduce such sound waves is to use active noise control systems. A design of a muffler using a similar system is presented. This muffler allowed one to reduce the emission of increased noise levels into the environment by 7-11 dB and to increase acoustic comfort at the operator's workplace by 3-5 dB.