Adaptive Feed-Forward Control of Low Frequency Interior Noise
(Sprache: Englisch)
Offering a mechatronic approach to Active Noise Control, this book covers system theory, engineering acoustics, electroacoustics and adaptive signal processing. It includes a design methodology for ANC-systems, explains applications and describes design tools.
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Produktinformationen zu „Adaptive Feed-Forward Control of Low Frequency Interior Noise “
Offering a mechatronic approach to Active Noise Control, this book covers system theory, engineering acoustics, electroacoustics and adaptive signal processing. It includes a design methodology for ANC-systems, explains applications and describes design tools.
Klappentext zu „Adaptive Feed-Forward Control of Low Frequency Interior Noise “
This book presents a mechatronic approach to Active Noise Control (ANC). It describes the required elements of system theory, engineering acoustics, electroacoustics and adaptive signal processing in a comprehensive, consistent and systematic manner using a unified notation. Furthermore it includes a design methodology for ANC-systems, explains its application and describes tools to be used for ANC-system design. From the research point of view, the book presents new approaches to sound source localization in weakly damped interiors. One is based on the inverse finite element method, the other is based on a sound intensity probe with an active free field. Furthermore, a prototype of an ANC-system able to reach the physical limits of local (feed-forward) ANC is described. This is one example for applied research in ANC-system design. Other examples are given for (i) local ANC in a semi-enclosed subspace of an aircraft cargo hold and (ii) for the combination of audio entertainment with ANC.
Inhaltsverzeichnis zu „Adaptive Feed-Forward Control of Low Frequency Interior Noise “
Part I Introduction1 Introduction to Interior Active Noise Control
1.1 Idea, Limit and Structure of Active Control Concepts
1.2 Remarks on Interior Noise and Active Control Approaches
1.2.1 Comments on the Interior Noise Problem
1.2.2 Comments on Active Control Approaches
1.2.3 A Qualitative Comparison of Active Control Approaches
1.3 Examples for Engineering Applications of Interior ANC
1.4 Objective of Book
Part II The Mechatronic Background of Feed-Forward Active Noise Control
2 Comments on Signals and Systems
2.1 Comments on Signals
2.1.1 Classification
2.1.2 Characteristic Values and Functions
2.2 Comments on Systems
2.2.1 Definitions
2.2.2 Transfer Behaviour of LTI-Systems
3 Dynamics of Basic System
3.1 Basic Field Variables
3.2 Acoustic Field Equations
3.3 Energy Density and Sound Intensity
3.4 One-Dimensional Enclosed Sound Fields
3.4.1 Free Vibrations in One-Dimensional Sound Fields
3.4.2 Forced Vibrations in One-Dimensional Sound Fields
4 Sensors for Active Noise Control
4.1 Acoustical Sensing by Condenser Type Microphones
4.2 Sound Intensity Measurement
4.2.1 Functional Principle of Sound Intensity Probes
4.2.2 Errors in Sound Intensity Measurements
4.3 Structural Sensing by Accelerometers
5 Actuators for Active Noise Control
5.1 Electro-Dynamical Loudspeakers
5.2 Electro-Dynamical Panel Speakers
6 Active Control of Tonal and Broadband Noise
6.1 Mathematical Preparation
6.1.1 Hermitian Matrices
6.1.2 Quadratic Optimization
6.1.3 Steepest-Decent Algorithm
6.2 Terms and Structure of Feed-Forward Control Approaches
6.3 Review and Evaluation of Control Strategies
6.3.1 Description of Benchmark System and Close Form Solution
6.3.2 Analysis of Specific Control Strategies
6.3.3 Comparison of Control Strategies
6.4 Multi-channel Control of Tonal Noise
6.4.1 Optimal Control of Tonal Noise
6.4.2 Adaptive Control of Tonal Noise
6.5 Active Control of Tonal Noise with Modified Cost Functions
6.5.1 Optimal
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Control Using a General Cost Function
6.5.2 Remote Sensor Control
6.5.3 Parametric Controller Design
6.6 Multi-channel Control of Stochastic Disturbances
6.6.1 Optimal Control of Stochastic Disturbances
6.6.2 Adaptive Control of Stochastic Disturbances
6.7 A Very Short Note on Adaptive Feedback Control
Part III ANC-System Design: Theory
7 ANC-System Design Tools
7.1 Numerical Analysis of Sound Fields
7.1.1 A Short Overview on Numerical Methods
7.1.2 The Finite Element Method
7.2 Inverse Noise Source Identification
7.2.1 A Note on Source Identification Methods
7.2.2 The Inverse Finite Element Method
7.3 Initial Performance Estimation
7.3.1 Coherence Analysis
7.3.2 Transducer Placement Analysis
7.3.3 Correlation Analysis
7.3.4 Impulse Response Analysis
7.3.5 A Short Comparison of Initial Performance Estimators
7.4 Two Short Remarks on the Effect of Sampling Frequency
8 ANC-System Design Methodology
8.1 A Note on the Design Methodology for Mechatronic Systems
8.2 System Maturity Levels
8.3 A Design Methodology for ANC-Systems
8.3.1 ANC-System Design Tasks
8.3.2 ANC-System Design Steps
8.3.3 Matrix Model of the ANC-System Design Process
Part IV ANC-System Design: Examples
9 Active Noise Control in a Semi-Closed Interior
9.1 Description of Problem and Requirements
9.2 Feasibility Study on ANC for the MA WA
9.2.1 Noise Field Analysis for the MA WA
9.2.2 Formulation of ANC-System Concept for the MA WA
9.2.3 Proof of MA WA ANC-System Concept
9.3 First Specification of Active Noise System
9.3.1 First Specification of Microphones
9.3.2 First Specification of Actuators
9.3.3 First Specification of Controller Software
9.3.4 Evaluation of First Specification
9.4 Weight, Cost and Efficiency Study
9.4.1 Actuator Design for ANC in the MA WA
9.4.2 Improvement of Adaptive Signal Processing
9.4.3 Optimization of Sensor and Actuator Locations
9.5 Sensitivity Study for ANC in MA WA
9.6 Robust Control of Sound in the MA WA
9.6.1 Design, Construction and Verification of Relevant Test Rig
9.6.2 Determination and Modelling of Uncertainties
9.6.3 Review of the MA WA Robust Control Approach
9.7 Design Process Summary
10 A Sound Intensity Probe with Active Free Field
10.1 Feasibility Study on an Active Intensity Probe
10.1.1 Analysis of the Controlled Sound Field
10.1.2 Formulation of SIAF-System Concept
10.1.3 Controller Design and Proof of SIAF-System Concept
10.2 First Specification of an Active Intensity Probe
10.2.1 First Specification of System Hardware
10.2.2 Test of First SIAF-Specification
10.3 Design Process Summary and Outlook
11 Active Noise Control Around Human Head
11.1 Feasibility Study on Local ANC in Bedrooms
11.1.1 Description of Bedroom Test Rig
11.1.2 Noise Field Analysis in the Transmission Test Rig
11.1.3 Anti-Noise Field Analysis in the Transmission Test Rig
11.1.4 Comments on Domain-Specific Design for Broadband ANC
11.1.5 System Integration and Functional Testing of Local ANC
11.1.6 Summary of Feasibility Study
11.2 Comments on the Application of Virtual Microphones
12 Active Noise Control and Audio Entertainment
12.1 Aircraft Interior Noise and ANC with Audio Entertainment
12.1.1 Comments on Aircraft Interior Noise
12.1.2 Comments on Hybrid ANC-Audio Systems
12.2 Feasibility Study on a Very Light Jet ANC-Audio System
12.2.1 In-Flight Measurements and Noise Field Analysis
12.2.2 Anti-Noise Field Analysis using a VLJ Mock-Up
12.2.3 Design of the ANC-Audio Controller
12.2.4 Integration and Test of the ANC-Audio Controller
12.2.5 ANC-Audio System Design Process Summary
13 Noise Source Localization in an Aircraft Cabin
13.1 Acoustic Ground Tests in an Aircraft Cross-Section
13.1.1 Description of the Aircraft Mock-Up
13.1.2 Description of Ground Test Experiments and Results
13.2 Inverse Calculation for an Aircraft Cross-Section
13.3 IFEM Application Summary
Part V Summary
- References
- IndexApplication of Virtual Microphones
12 Active Noise Control and Audio Entertainment
12.1 Aircraft Interior Noise and ANC with Audio Entertainment
12.1.1 Comments on Aircraft Interior Noise
12.1.2 Comments on Hybrid ANC-Audio Systems
12.2 Feasibilit
6.5.2 Remote Sensor Control
6.5.3 Parametric Controller Design
6.6 Multi-channel Control of Stochastic Disturbances
6.6.1 Optimal Control of Stochastic Disturbances
6.6.2 Adaptive Control of Stochastic Disturbances
6.7 A Very Short Note on Adaptive Feedback Control
Part III ANC-System Design: Theory
7 ANC-System Design Tools
7.1 Numerical Analysis of Sound Fields
7.1.1 A Short Overview on Numerical Methods
7.1.2 The Finite Element Method
7.2 Inverse Noise Source Identification
7.2.1 A Note on Source Identification Methods
7.2.2 The Inverse Finite Element Method
7.3 Initial Performance Estimation
7.3.1 Coherence Analysis
7.3.2 Transducer Placement Analysis
7.3.3 Correlation Analysis
7.3.4 Impulse Response Analysis
7.3.5 A Short Comparison of Initial Performance Estimators
7.4 Two Short Remarks on the Effect of Sampling Frequency
8 ANC-System Design Methodology
8.1 A Note on the Design Methodology for Mechatronic Systems
8.2 System Maturity Levels
8.3 A Design Methodology for ANC-Systems
8.3.1 ANC-System Design Tasks
8.3.2 ANC-System Design Steps
8.3.3 Matrix Model of the ANC-System Design Process
Part IV ANC-System Design: Examples
9 Active Noise Control in a Semi-Closed Interior
9.1 Description of Problem and Requirements
9.2 Feasibility Study on ANC for the MA WA
9.2.1 Noise Field Analysis for the MA WA
9.2.2 Formulation of ANC-System Concept for the MA WA
9.2.3 Proof of MA WA ANC-System Concept
9.3 First Specification of Active Noise System
9.3.1 First Specification of Microphones
9.3.2 First Specification of Actuators
9.3.3 First Specification of Controller Software
9.3.4 Evaluation of First Specification
9.4 Weight, Cost and Efficiency Study
9.4.1 Actuator Design for ANC in the MA WA
9.4.2 Improvement of Adaptive Signal Processing
9.4.3 Optimization of Sensor and Actuator Locations
9.5 Sensitivity Study for ANC in MA WA
9.6 Robust Control of Sound in the MA WA
9.6.1 Design, Construction and Verification of Relevant Test Rig
9.6.2 Determination and Modelling of Uncertainties
9.6.3 Review of the MA WA Robust Control Approach
9.7 Design Process Summary
10 A Sound Intensity Probe with Active Free Field
10.1 Feasibility Study on an Active Intensity Probe
10.1.1 Analysis of the Controlled Sound Field
10.1.2 Formulation of SIAF-System Concept
10.1.3 Controller Design and Proof of SIAF-System Concept
10.2 First Specification of an Active Intensity Probe
10.2.1 First Specification of System Hardware
10.2.2 Test of First SIAF-Specification
10.3 Design Process Summary and Outlook
11 Active Noise Control Around Human Head
11.1 Feasibility Study on Local ANC in Bedrooms
11.1.1 Description of Bedroom Test Rig
11.1.2 Noise Field Analysis in the Transmission Test Rig
11.1.3 Anti-Noise Field Analysis in the Transmission Test Rig
11.1.4 Comments on Domain-Specific Design for Broadband ANC
11.1.5 System Integration and Functional Testing of Local ANC
11.1.6 Summary of Feasibility Study
11.2 Comments on the Application of Virtual Microphones
12 Active Noise Control and Audio Entertainment
12.1 Aircraft Interior Noise and ANC with Audio Entertainment
12.1.1 Comments on Aircraft Interior Noise
12.1.2 Comments on Hybrid ANC-Audio Systems
12.2 Feasibility Study on a Very Light Jet ANC-Audio System
12.2.1 In-Flight Measurements and Noise Field Analysis
12.2.2 Anti-Noise Field Analysis using a VLJ Mock-Up
12.2.3 Design of the ANC-Audio Controller
12.2.4 Integration and Test of the ANC-Audio Controller
12.2.5 ANC-Audio System Design Process Summary
13 Noise Source Localization in an Aircraft Cabin
13.1 Acoustic Ground Tests in an Aircraft Cross-Section
13.1.1 Description of the Aircraft Mock-Up
13.1.2 Description of Ground Test Experiments and Results
13.2 Inverse Calculation for an Aircraft Cross-Section
13.3 IFEM Application Summary
Part V Summary
- References
- IndexApplication of Virtual Microphones
12 Active Noise Control and Audio Entertainment
12.1 Aircraft Interior Noise and ANC with Audio Entertainment
12.1.1 Comments on Aircraft Interior Noise
12.1.2 Comments on Hybrid ANC-Audio Systems
12.2 Feasibilit
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Autoren-Porträt von Thomas Kletschkowski
Thomas Kletschkowski is Privatdozent in the Department of Mechanical Enginieering of the Helmut-Schmidt-University/University of the Federal Armed Forces Hamburg.
Bibliographische Angaben
- Autor: Thomas Kletschkowski
- 2012, XXXVI, 330 Seiten, Maße: 16 x 24,1 cm, Gebunden, Englisch
- Verlag: Springer Netherlands
- ISBN-10: 9400725361
- ISBN-13: 9789400725362
- Erscheinungsdatum: 25.11.2011
Sprache:
Englisch
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