The invention belongs to the technical field of noise control, particularly relates to an active control method and device for automobile noise, and provides the following scheme aiming at the problem that most of the existing noise control methods are single in sound insulation effect operation and comprises the steps of engine noise control, noise reduction, noise reduction, noise reduction and noise reduction. The principle of various gasoline engines is independent of the ignition explosion acting process of a stroke engine, the process is one of important sources for generating automobile noise, and rapid combustion impact and combustion pressure oscillation form medium-high frequency components of a pressure spectrum in an air cylinder. Combustion noise is a continuous frequency component with a certain bandwidth. When the engine noise shielding device is used and noise of an engine needs to be shielded and weakened, only an electric push rod needs to be controlled to push a vertex angle block away from one end of a fixed box, then ventilation is conducted in a vertical air channel pipe, at the moment, a V-shaped air bag is expanded, and therefore a herringbone barrier is formed on the outer wall of the engine, and most noise is blocked.
本发明属于噪声控制技术领域,尤其是一种汽车噪声主动控制方法及装置,针对现有的噪声控制方法多为在隔声效果上进行操作具有单一性的问题,现提出以下方案,包括对发动机噪声的控制,各种汽油机的原理都离不开冲程发动机的点火爆炸做功过程,该过程是产生汽车噪声的重要来源之一,其中快速燃烧冲击和燃烧压力振荡构成了气缸内压力谱的中高频分量;燃烧噪声是具有一定带宽的连续频率成份。本发明能够在使用时,当需要对发动机的噪声进行屏蔽减弱的时候,只需控制电动推杆将顶角块推离固定箱的一端,之后再向竖直气道管中通气,此时就会将V形气囊袋膨胀起来,从而在发动机的外壁形成人字形的屏障,将大部分的噪声阻挡。
Automobile noise active control method and device
一种汽车噪声主动控制方法及装置
2022-05-13
Patent
Electronic Resource
Chinese
Active Booming Noise Control for Automobile
British Library Online Contents | 1994
|Integrated automobile road noise active noise control method and system
European Patent Office | 2022
|Automobile engine noise attenuation with an active noise control kit
Tema Archive | 1997
|Active noise reduction system and noise reduction method of automobile and electric automobile
European Patent Office | 2023
|