Adaptive Feed-Forward Control of Low Frequency Interior Noise - Softcover

Kletschkowski, Thomas

Softcover

ISBN 10: 9400725388 ISBN 13: 9789400725386

Verlag: Springer, 2011

Inhaltsangabe

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 Process

Details zur Ausgabe

• Verlag: Springer
• Erscheinungsdatum: 2011
• ISBN 10: 9400725388
• ISBN 13: 9789400725386
• Einband: Paperback
• Sprache: Englisch
• Kontakt zum Hersteller: Nicht verfügbar