Vibrations and Noises in Small Electric Motors
Measurement, Analysis, Interpretation, Optimization
Thomas Fuchs y Thomas Bertolini
Cite this publication as
Thomas Fuchs, Thomas Bertolini, Fa. FAULHABER (Hg.), Vibrations and Noises in Small Electric Motors (2012), Vogel Communications Group, Würzburg, ISBN: 9783834362902
75
accesses
accesses
Descripción / Abstract
It is hard for us to imagine today’s world without electric motors. At the same time, we are becoming increasingly demanding when it comes to the acoustic quality of these motors. Manufacturers of motors and other equipment increasingly need to have broad competence in dealing with noise. In fact, success in the competitive marketplace is coming to depend on having such acoustic know-how. This book is intended to provide assistance for an efficient and goal-oriented approach to eliminating vibration and acoustic problems in small electric drives. Furthermore, it is intended to create a basis for a uniform understanding of noise and to provide a communication basis for constructive customer-supplier relationships. It was developed from industrial practice and is suitable for engineers in development, production technology and quality management who are concerned with vibrations and noise from drives in their products. • Causes of vibrations and noises in small motors • Options for reducing and optimizing noises • Mechanical oscillations • Basic acoustic concepts • Measuring noises and vibrations • Analysis of noises and vibrations • Testing vibrations and noises • Examples of actual systems
Descripción
This book is intended to provide assistance for an efficient and goal-oriented approach to eliminating vibration and acoustic problems in small electric drives.
Índice
- BEGINN
- Titel
- Copyright / Impressum
- Preface
- Contents
- 1 Introduction to the topic
- 2 Causes of vibrations and noises insmall motors
- 2.1 Electromagnetically induced vibrations
- 2.2 Mechanically induced causes of vibrations in smallmotors
- 3 Options for reducing and optimizingnoises
- 3.1 Insulation and deadening
- 3.2 Reducing sound radiation
- 3.3 Reducing sound and vibration transfer
- 3.4 Reducing sound and vibration excitation
- 3.5 Optimization: efforts to systematically influence sound and vibration excitations
- 4 Mechanical oscillations
- 4.1 Basic principles of oscillations
- 4.2 Single-element linear oscillatory system
- 4.3 Multiple-element linear oscillatory system
- 4.4 Multiple-element torsional oscillation system
- 4.5 Oscillations in systems having distributed massesand elasticities
- 5 Basic acoustic concepts
- 5.1 How sound is propagated
- 5.2 Sense of touch and hearing: hearing in humans
- 5.3 Evaluation of auditory events: subjective variablesused to take auditory sensation into account
- 5.4 Subjective perception of noise and weighting ofnoise
- 6 Measuring noises and vibrations
- 6.1 Equipment for measuring airborne noise
- 6.2 Equipment for measuring structure-borne noise
- 6.3 Reproducible measurement
- 6.4 Measurement rooms
- 7 Analysis of noises andvibrations
- 7.1 Goals and objectives
- 7.2 Basic principles of signal analysis
- 7.3 Basic methods of signal analysis
- 7.4 Methods for noise and vibration analysis
- 8 Testing vibrations and noises
- 8.1 General principles of vibrations and noises
- 8.2 Noise testing in standard production
- 8.3 Capability of noise tests
- 8.4 Limit samples and test standards fornoise tests
- 8.5 Standard test procedure for noise testing
- 8.6 Selection of characteristics to be tested
- 8.7 Neuronal networks
- 8.8 Implementing noise test stands
- 9 Examples of actual systems
- 9.1 Analysis of a drive unit
- 9.2 Evaluating imbalance
- 9.3 Testing a gear drive by checking the shaft outputspeed curve
- 9.4 Noise test stand for checking gear noise inlarge-scale production
- List of Figures
- Index