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  1. Journal of the Brazilian Society of Mechanical Sciences and Engineering
  2. Journal of the Brazilian Society of Mechanical Sciences and Engineering : Volume 39
  3. Journal of the Brazilian Society of Mechanical Sciences and Engineering : Volume 39, Issue 1, January 2017
  4. Numerical and theoretical analysis of sound absorption by an actively controlled electrodynamic loudspeaker
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Journal of the Brazilian Society of Mechanical Sciences and Engineering : Volume 40
Journal of the Brazilian Society of Mechanical Sciences and Engineering : Volume 39
Journal of the Brazilian Society of Mechanical Sciences and Engineering : Volume 39, Issue 12, December 2017
Journal of the Brazilian Society of Mechanical Sciences and Engineering : Volume 39, Issue 11, November 2017
Journal of the Brazilian Society of Mechanical Sciences and Engineering : Volume 39, Issue 10, October 2017
Journal of the Brazilian Society of Mechanical Sciences and Engineering : Volume 39, Issue 9, September 2017
Journal of the Brazilian Society of Mechanical Sciences and Engineering : Volume 39, Issue 8, August 2017
Journal of the Brazilian Society of Mechanical Sciences and Engineering : Volume 39, Issue 7, July 2017
Journal of the Brazilian Society of Mechanical Sciences and Engineering : Volume 39, Issue 6, June 2017
Journal of the Brazilian Society of Mechanical Sciences and Engineering : Volume 39, Issue 5, May 2017
Journal of the Brazilian Society of Mechanical Sciences and Engineering : Volume 39, Issue 4, April 2017
Journal of the Brazilian Society of Mechanical Sciences and Engineering : Volume 39, Issue 3, March 2017
Journal of the Brazilian Society of Mechanical Sciences and Engineering : Volume 39, Issue 2, February 2017
Journal of the Brazilian Society of Mechanical Sciences and Engineering : Volume 39, Issue 1, January 2017
Thermocycling effect on mechanical and tribological characterization of two indirect dental restorative materials
Investigation on performance, emission and combustion characteristics of variable compression engine fuelled with diesel, waste plastics oil blends
A high-speed shaft supported by magnetic bearings applied to energy systems
Vertical dynamic analysis of a quarter car suspension system with MR damper
Co-simulation to evaluate acceleration performance and fuel consumption of hybrid vehicles
Time-domain simulation of acoustic impedance tubes
Numerical and theoretical analysis of sound absorption by an actively controlled electrodynamic loudspeaker
Numerical study for MHD stagnation-point flow of a micropolar nanofluid towards a stretching sheet
Magnetohydrodynamic free convection boundary layer flow of non-Newtonian tangent hyperbolic fluid from a vertical permeable cone with variable surface temperature
Exploration of single wall carbon nanotubes for the peristaltic motion in a curved channel with variable viscosity
Estimating high precision hole diameters of aerospace alloys using artificial intelligence systems: a comparative analysis of different techniques
A web-based CAD/CAPP/CAM system compliant with the STEP-NC standard to manufacture parts with general surfaces
Decision methods application to compare conventional manufacturing process with metal additive manufacturing process in the aerospace industry
A new global model to characterise the dynamics of a pneumatic proportional-pressure valve for a biomechatronic application
Analyzing free and forced vibration of flexible polyurethane foam using multiple time scales method
Development of complex layered and fractured reservoir models for reservoir simulation
Proposal of a new method for strength evaluating of construction of railway vehicles : Optimization of hood of diesel electric locomotive
On the technical and economic feasibility of a solar thermodynamic power plant in an area of medium–high direct sunlight intensity: an actual case study
Effect of copper oxide nanoparticles on thermophysical properties of hydraulic oil-based nanolubricants
Temperature-dependent shear-thinning Herschel–Bulkley fluid flow by taking into account viscous dissipation
Flexural toughness performance of hybrid fiber-reinforced RPC
Large deflection of a cantilever beam with multiple geometric and/or material discontinuities under a concentrated end-point load
Thermo-elastic bending analysis of FGM rotating plate with axial grading and modified rule of mixture
Study on mechanical behavior of welded box member based on multi-scale models
Knocking prediction in internal combustion engines via thermodynamic modeling: preliminary results and comparison with experimental data
Experimental and numerical study of heat transfer from a heated flat plate in a rectangular channel with an impinging air jet
The effect of position-dependent magnetic field on nanofluid forced convective heat transfer and entropy generation in a microchannel
Sampling method in probabilistic S-version finite element analysis for initial flaw size
Journal of the Brazilian Society of Mechanical Sciences and Engineering : Volume 38
Journal of the Brazilian Society of Mechanical Sciences and Engineering : Volume 37
Journal of the Brazilian Society of Mechanical Sciences and Engineering : Volume 36
Journal of the Brazilian Society of Mechanical Sciences and Engineering : Volume 35

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Numerical and theoretical analysis of sound absorption by an actively controlled electrodynamic loudspeaker

Content Provider SpringerLink
Author Papini, Guilherme de Souza Pasqual, Alexander Mattioli Pereira, Mateus de Freitas Virgilio
Copyright Year 2016
Abstract This work addresses the dynamic modeling and simulation of electrodynamic loudspeakers as active acoustic absorbers. A dynamic system is formulated based on the coupling of acoustic and electromechanical phenomena to describe the behavior of a loudspeaker placed at the end of a straight duct. Next, a proportional-plus-derivative feedback control system combined with a feedforward structure is developed to allow the loudspeaker to perform active impedance control. In contrast to previous works, the proposed control strategy relies on measurements of the electric current rather than of the diaphragm velocity. Computational simulations show that the control system is stable, reliable and efficient in increasing the acoustic absorption in a large frequency range, even though some limitations due to the loudspeaker operation may exist.
Starting Page 81
Ending Page 87
Page Count 7
File Format PDF
ISSN 16785878
Journal Journal of the Brazilian Society of Mechanical Sciences and Engineering
Volume Number 39
Issue Number 1
e-ISSN 18063691
Language English
Publisher Springer Berlin Heidelberg
Publisher Date 2016-03-25
Publisher Place Berlin, Heidelberg
Access Restriction One Nation One Subscription (ONOS)
Subject Keyword Electroacoustics Absorption Mechanical Engineering Loudspeaker Active noise control
Content Type Text
Resource Type Article
Subject Applied Mathematics Industrial and Manufacturing Engineering Automotive Engineering Mechanical Engineering Aerospace Engineering
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