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EBOOK
Author Dimino, Ignazio.
Title Active control of aircraft cabin noise / Ignazio Dimino, CIRA, the Italian Aerospace Research Centre, Italy, Ferri Aliabadi, Imperial College London, UK.
Imprint Hackensack, NJ : Imperial College Press, 2015.

Author Dimino, Ignazio.
Series Computational and experimental methods in structures ; volume 7
Computational and experimental methods in structures ; v. 7.
Subject Aircraft cabins -- Noise.
Acoustical engineering.
Alt Name Aliabadi, M. H.
Author Dimino, Ignazio.
Series Computational and experimental methods in structures ; volume 7
Computational and experimental methods in structures ; v. 7.
Subject Aircraft cabins -- Noise.
Acoustical engineering.
Alt Name Aliabadi, M. H.
Description 1 online resource.
Bibliography Note Includes bibliographical references and index.
Note Print version record.
Contents Preface; Nomenclature; 1 Aircraft Noise Control; 1.1 Introduction; 1.2 Active Noise Control and Active Structural Acoustic Control; 1.2.1 Active noise control applications in aircraft; 1.3 Book Overview; 2 Fundamentals in Structural Acoustics; 2.1 Introduction; 2.2 Metrics of Sound Transmission; 2.2.1 Sound pressure level; 2.2.2 Sound insertion loss; 2.2.3 Sound transmission loss; 2.3 Transmission Loss Experiments; 2.4 Experimental Modal Analysis; 2.4.1 Basics in structural dynamics; 2.4.2 Modal parameter estimation algorithms.
2.5 The Acoustic Wave Equation and the Helmholtz Equation2.5.1 The inhomogeneous wave equation; 2.5.2 The solution to the inhomogeneous wave equation; 2.5.3 Free space sound radiation; 2.5.4 The Kirchoff-Helmholtz integral equation; 2.6 Sound Radiation from Vibrating Flat Panels; 2.6.1 Sound power radiation; 2.6.2 Elemental radiators; 2.6.3 Radiation modes; 2.6.4 Sound radiation efficiency; 2.7 Finite Element Method for Interior Problems; 2.8 Coupled FE Formulation for Interior Vibro-Acoustic Systems; 2.9 Summary; 3 Transmission of Sound through Multiple Partitions; 3.1 Introduction.
3.2 Analytical Modelling of Multi-Panel Partitions3.2.1 Infinite panels; 3.2.2 Modal coupling theory; 3.2.3 Structure-acoustic modal coupling in triple-panel partitions; 3.3 Sound Transmission Through Infinite Triple Partitions; 3.3.1 Analysis of the derived equations; 3.4 Sound Transmission Simulation; 3.4.1 Diffuse acoustic excitation model; 3.4.2 Benchmark examples; 3.5 Summary; 4 Adaptive Control of Sound Radiation; 4.1 Introduction; 4.2 Control of Sound Radiation by Structural Actuators; 4.3 Control Strategies; 4.3.1 Feedforward control; 4.3.2 Feedback control.
4.3.3 Feedforward vs. feedback control4.4 Steepest-Descent Algorithm; 4.5 Adaptive Digital Filters; 4.6 Filtered-X LMS Algorithm; 4.7 Multi-Channel Adaptive Algorithms; 4.8 Experimental System Identification; 4.9 Numerical Simulations; 4.9.1 Harmonic primary noise; 4.9.2 Random primary noise; 4.9.3 Narrow-band primary noise; 4.10 Summary; 5 Noise-Reducing Smart Windows; 5.1 Introduction; 5.2 Literature Survey; 5.2.1 Control of sound transmission through multi-wall partitions: panel control; 5.2.2 Control of sound transmission through multi-wall partitions: cavity control; 5.3 Piezoelectricity.
5.4 Smart Window Design5.4.1 Scope; 5.4.2 Numerical modelling; 5.4.3 Structural control actuators; 5.5 SmartWindow Test-Bed; 5.5.1 Experimental modal analysis; 5.5.2 Control actuators set-up; 5.6 Transmission Loss Predictions; 5.7 Summary; 6 Active Noise Control Experiments; 6.1 Introduction; 6.2 Experimental Set-Up; 6.3 Instrumentation; 6.4 Imperfections in the Experimental Set-Up; 6.4.1 Coupled vibro-acoustic model of the sending room; 6.4.2 Experimental validation; 6.5 Real-Time DSP Implementation of Active Noise Control; 6.5.1 The real-time controller; 6.5.2 Experimental results.
Summary "Active Control of Aircraft Cabin Noise provides a bridge to fill the gap between robust control theory and practical applications of active noise control systems in aircraft cabin. Both the possibilities and limitations of structural solutions to enhance aircraft cabin comfort by reducing interior noise are discussed supported by a wide range of topics in engineering, from finite element modeling to multichannel adaptive feed-forward control, usually dealt separately in the literature. In addition, experimental noise attenuation results with passengers' subjective perceptions predicting the effects of cabin noise on comfort assessments is examined. Theoretical and experimental research is detailed enough to capture the interest of the non-expert in engineering who wishes to have an overview of some of the active noise control applications in aircraft. This book may be used as an advanced textbook by graduate and undergraduate students in aeronautical engineering, and would be an authoritative resource book for research into the subject."-- Provided by publisher.
ISBN 9781783266586 (electronic bk.)
1783266589 (electronic bk.)
9781783266579
1783266570
OCLC # 918983973
Additional Format Print version: Dimino, Ignazio. Active control of aircraft cabin noise 9781783266579 (DLC) 2014050210 (OCoLC)898158903



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