Adaptive Feed-Forward Control of Low Frequency Interior Noise

• Κύριος συγγραφέας: Kletschkowski, Thomas (Συγγραφέας)
• Συγγραφή απο Οργανισμό/Αρχή: SpringerLink (Online service)
• Μορφή: Ηλεκτρονική πηγή Ηλ. βιβλίο
• Γλώσσα: English
• Έκδοση: Dordrecht : Springer Netherlands, 2012.
• Σειρά: Intelligent Systems, Control and Automation: Science and Engineering ; 56
• Θέματα: Engineering.; Acoustics.; Acoustical engineering.; Mechatronics.; Engineering Acoustics.

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...

Πίνακας περιεχομένων:

• Part I Introduction
• 1 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 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
• Index.