Active Structural Acoustic Control of Machine Enclosures
نویسندگان
چکیده
Vibrating machinery such as pumps, generators and compressors normally use passive insulation materials to reduce sound radiation. This paper provides a practical examination of possible solutions to active control of machine enclosures that reduces the radiated sound intensity from the enclosure to the environment. The results show that a combination of simple sky-hook type feedback controllers for active mounts, and relatively straightforward feedforward frequency selective filter (FSF) based controllers for modal control, offer a practical solution. Copyright c ©2005 IFAC
منابع مشابه
Virtual sensors for active noise control in acoustic-structural coupled enclosures using structural sensing: robust virtual sensor design.
The work was aimed to develop a robust virtual sensing design methodology for sensing and active control applications of vibro-acoustic systems. The proposed virtual sensor was designed to estimate a broadband acoustic interior sound pressure using structural sensors, with robustness against certain dynamic uncertainties occurring in an acoustic-structural coupled enclosure. A convex combinatio...
متن کاملActive Control of Sound Transmission into Three-dimensional Enclosures
Title of Dissertation: ACTIVE CONTROL OF SOUND TRANSMISSION INTO THREE-DIMENSIONAL ENCLOSURES Moustafa Al-Bassyiouni, Doctor of Philosophy, 2004 Dissertation directed by: Professor B. Balachandran Department of Mechanical Engineering The aim of this dissertation work is to understand active control of sound fields inside a three-dimensional rectangular enclosure into which noise is transmitted ...
متن کاملCompact and Efficient Active Vibro-acoustic Control of a Smart Plate Structure
An effective wide band active control law through one kind of the Dynamic Vibration Absorber (DVA) is proposed and studied in this paper. With the help of mechanical impedance method, active DVA control law is formulated based on the passive mechanical model. The electrical DVA can generate multi-mode active damping to the structure. The host structure is an aluminum plate and acceleration sign...
متن کاملSMART FOAM FOR ACTIVE VIBRATION AND NOISE CONTROL by
Title of Dissertation: SMART FOAM FOR ACTIVE VIBRATION AND NOISE CONTROL Wael Nabil Akl, Doctor of Philosophy, 2004 Dissertation Directed By: Professor Amr M. Baz Department Mechanical Engineering A new class of smart foams is introduced to simultaneously control the vibration and noise radiation from flexible plates coupled with acoustic cavities. The proposed smart foam consists of a passive ...
متن کامل