1,297 resources related to Vibration Analysis
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APEC focuses on the practical and applied aspects of the power electronics business. Not just a power designer’s conference, APEC has something of interest for anyone involved in power electronics including:- Equipment OEMs that use power supplies and converters in their equipment- Designers of power supplies, dc-dc converters, motor drives, uninterruptable power supplies, inverters and any other power electronic circuits, equipments and systems- Manufacturers and suppliers of components and assemblies used in power electronics- Manufacturing, quality and test engineers involved with power electronics equipment- Marketing, sales and anyone involved in the business of power electronic- Compliance engineers testing and qualifying power electronics equipment or equipment that uses power electronics
The International Conference on Robotics and Automation (ICRA) is the IEEE Robotics and Automation Society’s biggest conference and one of the leading international forums for robotics researchers to present their work.
The 2020 IEEE International Conference on Systems, Man, and Cybernetics (SMC 2020) will be held in Metro Toronto Convention Centre (MTCC), Toronto, Ontario, Canada. SMC 2020 is the flagship conference of the IEEE Systems, Man, and Cybernetics Society. It provides an international forum for researchers and practitioners to report most recent innovations and developments, summarize state-of-the-art, and exchange ideas and advances in all aspects of systems science and engineering, human machine systems, and cybernetics. Advances in these fields have increasing importance in the creation of intelligent environments involving technologies interacting with humans to provide an enriching experience and thereby improve quality of life. Papers related to the conference theme are solicited, including theories, methodologies, and emerging applications. Contributions to theory and practice, including but not limited to the following technical areas, are invited.
The Conference focuses on all aspects of instrumentation and measurement science andtechnology research development and applications. The list of program topics includes but isnot limited to: Measurement Science & Education, Measurement Systems, Measurement DataAcquisition, Measurements of Physical Quantities, and Measurement Applications.
The Annual IEEE PES General Meeting will bring together over 2900 attendees for technical sessions, administrative sessions, super sessions, poster sessions, student programs, awards ceremonies, committee meetings, tutorials and more
IEEE Antennas and Wireless Propagation Letters (AWP Letters) will be devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation.
Contains articles on the applications and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Power applications include magnet design as well asmotors, generators, and power transmission
Speech analysis, synthesis, coding speech recognition, speaker recognition, language modeling, speech production and perception, speech enhancement. In audio, transducers, room acoustics, active sound control, human audition, analysis/synthesis/coding of music, and consumer audio. (8) (IEEE Guide for Authors) The scope for the proposed transactions includes SPEECH PROCESSING - Transmission and storage of Speech signals; speech coding; speech enhancement and noise reduction; ...
The theory, design and application of Control Systems. It shall encompass components, and the integration of these components, as are necessary for the construction of such systems. The word `systems' as used herein shall be interpreted to include physical, biological, organizational and other entities and combinations thereof, which can be represented through a mathematical symbolism. The Field of Interest: shall ...
Broad coverage of concepts and methods of the physical and engineering sciences applied in biology and medicine, ranging from formalized mathematical theory through experimental science and technological development to practical clinical applications.
2013 8th International Symposium on Image and Signal Processing and Analysis (ISPA), 2013
The scale invariant third order moment, skewness, is analysed as an objective function to an adaptive gradient ascent algorithm. The purpose is to achieve a spectrum at the filter output that can enable identification of possible bearing defect signatures which are impulsive and periodic. Harmonically related sinusoids are used to represent such signatures and to build a signal model allowing ...
2013 Fourth International Conference on Computing, Communications and Networking Technologies (ICCCNT), 2013
Present day requirements for enhanced reliability of rotating equipments are most critical than ever before, and demands continue to grow constantly. Detection of faults play important role in the quest for highly reliable operations. Reducing maintenance and production cost, improving uptime, product quality, advance safety and reducing risks are some of the essential drivers for deploying vibration analysis. These serve ...
2011 IEEE International Electric Machines & Drives Conference (IEMDC), 2011
Vibration analysis is one of the most successful techniques used for condition monitoring of rotating machines. The aim of this presentation is to show that vibration analysis is a very efficient and convenient tool for diagnosing mechanical and electromagnetic problems in induction motors. This presentation is based on thirty-five years of the author's experience in the field of vibration motor ...
2007 8th International Conference on Electronic Measurement and Instruments, 2007
Nowadays, oil analysis and vibration analysis are the two main condition monitoring and fault diagnosis techniques for gearboxes maintenance. In practice, these two techniques are usually used independently, and can only find about 40% of faults when used separately which usually cause missed hits and false alarms. If we can integrate the two faults information, more reliable diagnosis results will ...
2011 International Conference on Electric Technology and Civil Engineering (ICETCE), 2011
A Hermite reproducing kernel meshfree method is present for the free and forced vibration analysis of Kirchhoff plates. This formulation provides a straightforward and robust way to construct C<sup>1</sup> approximation to investigate the dynamic response of Kirchhoff plates. The Hermite reproducing kernel approximation of the plate deflection is formulated using the deflectional as well as the rotational nodal variables. The ...
IMS 2011 Microapps - A Practical Approach to Verifying RFICs with Fast Mismatch Analysis
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A Flexible Testbed for 5G Waveform Generation and Analysis: MicroApps 2015 - Keysight Technologies
IROS TV 2019- Pohang University of Science and Technology- Haptics and Virtual Reality Laboratory
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Zohara Cohen AMA EMBS Individualized Health
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Micro-Apps 2013: Power Added Efficiency (PAE) Analysis with 8990B Peak Power Analyzer
Real-time Spectrogram Analysis of Continuous Optical Wavefields - José Azaña - Closing Ceremony, IPC 2018
Brooklyn 5G Summit 2014: Dr. Robert Heath on Coverage and Capacity Analysis of Dense Millimeter Wave Cellular System
The scale invariant third order moment, skewness, is analysed as an objective function to an adaptive gradient ascent algorithm. The purpose is to achieve a spectrum at the filter output that can enable identification of possible bearing defect signatures which are impulsive and periodic. Harmonically related sinusoids are used to represent such signatures and to build a signal model allowing characterization of the objective surface of skewness, providing insight to its convergent behaviour. The results are supported with an experiment from an industry setting. Robustness of the proposed algorithm is demonstrated by examining the frequency spectrum resulting from the signal model.
Present day requirements for enhanced reliability of rotating equipments are most critical than ever before, and demands continue to grow constantly. Detection of faults play important role in the quest for highly reliable operations. Reducing maintenance and production cost, improving uptime, product quality, advance safety and reducing risks are some of the essential drivers for deploying vibration analysis. These serve as goals of any plant or corporation. Vibration analysis for predictive maintenance is an important ingredient in all these goals. Vibration analysis can be used as part of root cause analysis efforts within any plant. The present work offers a course of action for analyzing the vibration signals of electrical rotating machines and diagnoses the health of machine for predictive maintenance requirements using Fast Fourier Transform (FFT). The Vibration analysis of electrical rotating machines lies on the fact that all rotating machines in good condition have fairly stable vibration pattern. Under any abnormal condition in working of machines, the vibration pattern gets changed. The amount of variation can be detected and the nature of abnormalities can be analyzed with LabVIEW to get an idea about the fault in the machine. Based on the type of defect and its slope of progression, predictive maintenance schedule can be proposed. This work also aims at overcoming the limitations of traditional vibration analysis techniques.
Vibration analysis is one of the most successful techniques used for condition monitoring of rotating machines. The aim of this presentation is to show that vibration analysis is a very efficient and convenient tool for diagnosing mechanical and electromagnetic problems in induction motors. This presentation is based on thirty-five years of the author's experience in the field of vibration motor diagnostics. Case histories from VSC's field service files covering assorted industries represent typical mechanical and electromagnetic problems found in motors by using vibration analysis techniques. Among them are: bearing failure, mechanical imbalance, structural resonance and foundation problems, winding damage, voltage waveform distortion, faulty control of Variable Frequency Drives (VFD), and combinations of mechanical and electrical problems. A short theoretical analysis of electromagnetic excitation forces based on classical electrical machinery theory is presented. A comparison of the advantages and disadvantages of the varied modern techniques used or recommended in today's industry for electrical motor condition monitoring is provided. The place of vibration analysis in the realm of expert systems for motor condition monitoring is also discussed.
Nowadays, oil analysis and vibration analysis are the two main condition monitoring and fault diagnosis techniques for gearboxes maintenance. In practice, these two techniques are usually used independently, and can only find about 40% of faults when used separately which usually cause missed hits and false alarms. If we can integrate the two faults information, more reliable diagnosis results will be obtained. In this paper, a test rig driving by an electric motor was set up to examine the correlation between vibration signals and oil analysis data. In experimentation procedure, oil samples and vibration signals were collected regularly and the characteristic parameters based on oil analysis and vibration analysis were calculated by using the effective algorithms. Finally, we use D-S theory of evidence as the information fusion method to integrate oil analysis information and vibration analysis information of a gearbox. The results prove that the method integrating oil analysis and vibration analysis is applicable and available in condition monitoring and fault diagnosis of gearboxes.
A Hermite reproducing kernel meshfree method is present for the free and forced vibration analysis of Kirchhoff plates. This formulation provides a straightforward and robust way to construct C<sup>1</sup> approximation to investigate the dynamic response of Kirchhoff plates. The Hermite reproducing kernel approximation of the plate deflection is formulated using the deflectional as well as the rotational nodal variables. The integration of the Galerkin weak form is carried out by the sub domain stabilized conforming integration methdology. The resulting discretized equation can exactly satisfy the integration constraints associated with the bending exactness. In the time domain, the Newmark method is used to obtain the fully discretized equation. Numerical results indicate that the present method is very effective.
Vibration analysis is one of the most successful techniques used for condition monitoring of rotating machines. Vibration analysis is a very efficient and convenient tool for diagnosing mechanical problems in induction motors. The aim of this paper is to show that vibration analysis is an efficient tool for diagnosing electromagnetic problems in induction motors, which are very specific for this type of machines. The industry today widely uses different kinds of nonlinear systems operating in the power lines, for example, adjustable speed drives, which cause voltage distortion on the induction motor supply and in the power lines. Faulty operation of adjustable speed drives very often creates unusual voltage content on the induction motors input. Single phase load in three phase power systems may cause voltage imbalance. Induction motors operating under non-sinusoidal voltage (voltage distortion) or under non-symmetrical three phase voltage (voltage imbalance) have usually experienced significant vibration of electromagnetic nature. Vibration of an electromagnetic nature may also be a result of an internal fault in the motor. Motor vibration data contain substantial analytical information about internal motor electrical problems such as: stator and rotor winding and core condition, air gap eccentricity; and information about external electrical problems: current/voltage imbalance, voltage distortions in the power line, etc. A short theoretical analysis of electromagnetic excitation forces is included to exemplify how the internal and external electrical faults create parasitic radial forces (rotating waves) and tangential forces (pulsating torques) inside the induction motors, which deteriorates equipment health. Faults are illustrated in numerous case histories of electromagnetic problems from different industries, which result in machinery vibration that is significantly above acceptable standards. Among them are: voltage (current) imbalance, voltage waveform distortion, faulty control of ASD, motor eccentric air gap, induction motor winding (stator and rotor) damage, //and combinations of mechanical and electrical problems//.
Based on the equivalent excitation method, the equivalent excitation load of the controlled system is constructed under random excitations, and then adopting the state space control theory, the responses of the controlled system are calculated. According to the equivalent excitation method, the statistical characteristics of the responses are determined to fulfill the random vibration analysis of the controlled system. The simulation analysis of a real building shows that the LQG controlled structural has remarkable control effect. And that prove the feasibility and effectiveness of the random vibration analysis for the controlled system.
This book, written for practicing engineers, designers, researchers, and students, summarizes basic vibration theory and established methods for analyzing vibrations. Principles of Vibration Analysis goes beyond most other texts on this subject, as it integrates the advances of modern modal analysis, experimental testing, and numerical analysis with fundamental theory. No other book brings all of these topics together under one cover. The authors have compiled these topics, compared them, and provided experience with practical application. This must-have book is a comprehensive resource that the practitioner will reference time and again.
To design a new model to reduce the noise of a reactor under inverter power supply, the cause of noise should be investigated. We carry out vibration analysis of a single phase of a reactor while considering electromagnetism and magnetostriction to clarify the mechanism of noise generation in the reactor. In this analysis, magnetostriction is modeled three-dimensionally with equivalent nodal forces. First, the nodal forces in the cores of reactor due to the electromagetism and magnetostriction are calculated using the flux distribution obtained from magnetic field analysis. To determine the dominant cause of noise, the spatial distributions of displacements generated by both nodal forces are then obtained by static structure analysis and they are compared in detail. Moreover, the actual movements of the cores are calculated by vibration analysis. Finally, the effect of the hardness of the cores on noise generation is calculated and measured. It is shown that the hardness of the insulator inserted in gaps between cores affects the vibration and it seems to have an optimal value. Moreover, the analyzed results are proved by measurement.
Apart from bearing failures, induction motors are often subjected to stator winding faults as they are subjected to high mechanical, thermal, electrical stresses and also due to hostile environmental conditions etc. Current monitoring is the mostly used technique for identification of incipient level of inter-turn short faults in induction motors. Few works are also available in literature about vibration analysis of inter-turn fault motors. In vibration monitoring authors have majorly focused on the fundamental rotational and supply harmonics hardly up to four. It is not ideal to judge whether the rise in vibration amplitudes at these harmonics are due to electrical faults such as voltage unbalance, air gap eccentricity, bowed rotor, inter-turn faults or due to mechanical faults such as misalignment, looseness, weak base etc. So, there is a need for further studies in vibration analysis of motors under inter-turn fault. Experimental investigations have been performed to study the effect of inter-turn fault on rotor slot harmonic amplitudes. From the experiments, it is clear that inter-turn fault also results in increase of vibration amplitudes at rotor slot harmonics.
This guide provides current practices related to field measurements of aeolian vibration of overhead conductors.