ACTIVE CONTROL OF AN ENGINE ENCLOSURE MINIMIZATION OF THE TOTAL RADIATED SOUND POWER

机译：主动控制引擎外壳最小化总辐射声功率

获取原文

页面导航

摘要
著录项
相似文献
相关主题

摘要

This paper has been written in order to present a method for the reinforcement of sound insulation in low frequency of an engine enclosure harmonically excited by airborne noise. Two different active control methods have been used to control the sound radiated by the engine enclosure. First of all, experiments were carried out by performing the minimization of sound pressure at a certain point, either inside or outside the enclosure. Second, the active control is achieved by altering the vibration characteristics of the structure. The successful method consists of minimizing the total sound power radiated by the five sides of the enclosure by modifying the vibration characteristics of the metallic structure. A quadratic expression of the sound power is calculated in terms of the distribution of the surface velocity of each side of the structure. The sound insulation of the enclosure is examined according to the modal analysis of the structure with and without active control and we observe that the maximum decrease is obtained in a frequency band in which the first modes have a dominating part in radiation.

机译：已经编写了本文，以提出一种方法，以便通过空气噪声谐波的发动机外壳的低频频率加强隔音的方法。已经使用两种不同的主动控制方法来控制发动机外壳辐射的声音。首先，通过在外壳内部或外部执行声压最小化声压来执行实验。其次，通过改变结构的振动特性来实现主动控制。成功的方法包括通过修改金属结构的振动特性，最小化外壳的五边辐射的总声音功率。根据结构的每一侧的表面速度的分布，计算声音的二次表达。根据具有和无主动控制的结构的模态分析检查外壳的隔音，并且我们观察到在第一模式具有辐射中的主管部件的频带中获得最大减小。

著录项

来源
《International Congress on Recent Developments in Air- and Structure-Borne Sound and Vibration》|1994年||共6页
会议地点
作者
G. CHATEL;
展开▼
作者单位

展开▼
会议组织
原文格式 PDF
正文语种
中图分类 TB53-53;
关键词

相似文献

外文文献
中文文献
专利

1. Narrow band active control of sound radiated from a baffled beam using local volume displacement minimization [J] . Marcellin B. Zahui, Koorosh Naghshineh, James W. Kamman Applied Acoustics . 2001,第1期

机译：使用局部体积位移最小化对从障板辐射出的声音进行窄带主动控制
2. A technique for estimating the sound power level radiated by pneumatic rock drills and the evaluation of a CSIR prototype rock drill with engineering noise controls [J] . P.G. Kovalchik, F.T. Duda, G.S. Harper Journal Of The South African Institute Of Mining & Metallurgy . 2009,第5期

机译：估算气动凿岩机辐射的声功率级的技术以及采用工程噪声控制技术评估CSIR原型凿岩机的技术
3. Minimization of acoustic potential energy in enclosure using both active noise control and active vibration control [J] . Kozue KOBAYASHF, Nobuo TANAKA JSME International Journal. Series C, Mechanical Systems, Machine Elements and Manufacturing . 2004,第4期

机译：同时使用主动噪声控制和主动振动控制将外壳中的声势能降至最低
4. ACTIVE CONTROL OF AN ENGINE ENCLOSURE MINIMIZATION OF THE TOTAL RADIATED SOUND POWER [C] . G. CHATEL International Congress on Recent Developments in Air- and Structure-Borne Sound and Vibration . 1994

机译：主动控制引擎外壳最小化总辐射声功率
5. Minimizing radiated sound power from vibrating shell structures: Theory and experiment. [D] . Constans, Eric William. 1998

机译：使振动壳体结构产生的辐射声功率最小：理论和实验。
6. Reduction of the Radiating Sound of a Submerged Finite Cylindrical Shell Structure by Active Vibration Control [O] . Heung Soo Kim, Jung Woo Sohn, Juncheol Jeon, 2013

机译：通过主动振动控制降低水下圆柱壳结构的辐射声
7. A study on Active Noise Control for Minimizing Total Acoustic Power (Proposal of Sound Pressure Attenuation Method for Noise Radiated from Large Duct Opening and Application to The Large Duct System of Transformer) [O] . Akihiko ENAMITO, Nobuo TANAKA, Toshikazu NAGATA, 2003

机译：最大限度地减少总声学功率的主动噪声控制研究（大型管道打开辐射噪声的噪声衰减方法的提议）
8. Active Control of Radiated Sound with Integrated Piezoelectric Composite Structures. Volume 3: Appendices (Concl.) [R] . Fuller, C. R. , Cross, L. E. 1998

机译：集成压电复合结构在辐射声控制中的应用。第3卷：附录（附件）

ACTIVE CONTROL OF AN ENGINE ENCLOSURE MINIMIZATION OF THE TOTAL RADIATED SOUND POWER

摘要

著录项

相似文献

相关主题

期刊订阅