Magnetic Bearings

Author : Gerhard Schweitzer,Eric H. Maslen
Publisher : Springer Science & Business Media
Page : 541 pages
File Size : 55,5 Mb
Release : 2009-06-10
Category : Technology & Engineering
ISBN : 9783642004971

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Magnetic Bearings by Gerhard Schweitzer,Eric H. Maslen Pdf

Compiling the expertise of nine pioneers of the field, Magnetic Bearings - Theory, Design, and Application to Rotating Machinery offers an encyclopedic study of this rapidly emerging field with a balanced blend of commercial and academic perspectives. Every element of the technology is examined in detail, beginning at the component level and proceeding through a thorough exposition of the design and performance of these systems. The book is organized in a logical fashion, starting with an overview of the technology and a survey of the range of applications. A background chapter then explains the central concepts of active magnetic bearings while avoiding a morass of technical details. From here, the reader continues to a meticulous, state-of-the-art exposition of the component technologies and the manner in which they are assembled to form the AMB/rotor system. These system models and performance objectives are then tied together through extensive discussions of control methods for both rigid and flexible rotors, including consideration of the problem of system dynamics identification. Supporting this, the issues of system reliability and fault management are discussed from several useful and complementary perspectives. At the end of the book, numerous special concepts and systems, including micro-scale bearings, self-bearing motors, and self-sensing bearings, are put forth as promising directions for new research and development. Newcomers to the field will find the material highly accessible while veteran practitioners will be impressed by the level of technical detail that emerges from a combination of sophisticated analysis and insights gleaned from many collective years of practical experience. An exhaustive, self-contained text on active magnetic bearing technology, this book should be a core reference for anyone seeking to understand or develop systems using magnetic bearings.

Author : Akira Chiba,Tadashi Fukao,Osamu Ichikawa,Masahide Oshima,Masatugu Takemoto,David G Dorrell
Publisher : Elsevier
Page : 400 pages
File Size : 47,5 Mb
Release : 2005-05-20
Category : Technology & Engineering
ISBN : 0080478972

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Magnetic Bearings and Bearingless Drives by Akira Chiba,Tadashi Fukao,Osamu Ichikawa,Masahide Oshima,Masatugu Takemoto,David G Dorrell Pdf

The application of bearingless drives is emerging as an important technique in the areas of high-speed machinery and motion-control, and this book aims to provide a thorough grounding in the principles behind this cutting-edge technology. Basic principles are described in detail with practical examples to aid understanding, and the different types of bearingless drives are introduced, along with coverage of test machines and applications. Aimed at practising electrical and mechanical engineers and advanced students, Magnetic Bearings and Bearingless Drives provides an essential guide to an area of engineering previously only fully covered by large numbers of academic papers. · Unique and comprehensive coverage of a cutting-edge subject for electrical and mechanical engineers · A reference text and survey for designers, manufacturers and users of high-speed motors, generators and electrical drive systems · Examines the basic principles behind magnetic bearings, with key technologies and applications illustrated through examples and case studies

Author : G. Schweitzer
Publisher : Springer Science & Business Media
Page : 387 pages
File Size : 48,7 Mb
Release : 2012-12-06
Category : Technology & Engineering
ISBN : 9783642517242

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Magnetic Bearings by G. Schweitzer Pdf

Magnetic Bearings are bearings where the suspension forces are generated magnetically without any contact. The advantages to modern machinery are obvious: no mechanical wear, no lubrication, potential for high rotor speed, accuracy, and high dynamic performance, new constructional solutions to a classical problem in machine dynamics. The realization of such bearings is in rapid progress. Examples for application areas are turbomachinery, centrifuges, vacuum techniques, machine tool spindles, chemical industry, medical devices, robotics, high speed drives, spacecraft equipment, con tactless actuators, vibration isolation. The Symposium is demonstrating the current state of the art in this developing field of mechatronics, showing actual research efforts, reporting on applications in the various areas, and discussing open questions. The main purpose of the Symposium has been to establish a common information basis for people working on magnetic bearings. It will point to promising areas, and it will help to facilitate decisions on research and development projects, and on investments for applications.

Author : Anonim
Publisher : CRC Press
Page : 376 pages
File Size : 42,9 Mb
Release : 1997-08-12
Category : Technology & Engineering
ISBN : 1566765994

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Magnetic Bearings, Magnetic Drives and Dry Gas Seals Conference by Anonim Pdf

A pre-conference collection of 30 papers that contribute to the event's purpose of promoting the use of magnetic bearings in industrial applications. They cover applications in pumps, turbines, machining, textile spindles, compressors, and fans; auxiliary bearings; magnetic suspension; controls; mod

Author : Virginie Kluyskens
Publisher : Presses univ. de Louvain
Page : 253 pages
File Size : 55,9 Mb
Release : 2011-10-20
Category : Science
ISBN : 9782875580184

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Dynamical Electromechanical Model of Magnetic Bearings Subject to Eddy Currents by Virginie Kluyskens Pdf

This thesis proposes a phenomenological electromechanical model aimed to explain the physical consequences of the forces due to eddy currents in any type of rotating magnetic bearing.

Author : Se Young Yoon,Zongli Lin,Paul E. Allaire
Publisher : Springer Science & Business Media
Page : 292 pages
File Size : 40,6 Mb
Release : 2012-06-19
Category : Technology & Engineering
ISBN : 9781447142409

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Control of Surge in Centrifugal Compressors by Active Magnetic Bearings by Se Young Yoon,Zongli Lin,Paul E. Allaire Pdf

Surge Control of Active-magnetic-bearing-suspended Centrifugal Compressors sets out the fundamentals of integrating active magnetic bearing (AMB) rotor suspension technology in compressor systems, and describes how this relatively new bearing technology can be employed in active control of compressor surge initiation. The authors provide a self-contained and comprehensive review of rotordynamics and the fundamentals of AMB technology. The active stabilization of compressor surge employing AMBs in a machine is fully explored, from modeling of instability and controller design, to the implementation and experimental testing of the control algorithm in a specially-constructed, industrial-size centrifugal compression system. The results of these tests demonstrate the great potential of the new surge control method suggested in this text. This book will be useful for engineers in industries that involve turbocompressors and magnetic bearings, as well as for researchers and graduate students in the field of applied control. Whatever their level of experience, engineers working in the fields of turbomachinery, magnetic bearings, rotordynamics and controls will find the material in this book absorbing as all these important aspects of engineering are integrated to create a multi-disciplinary solution to a real-life industrial problem and the book is a suitable introduction to the area for newcomers.

Author : Avraham Harnoy
Publisher : CRC Press
Page : 664 pages
File Size : 41,7 Mb
Release : 2002-09-25
Category : Technology & Engineering
ISBN : 0203909070

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Bearing Design in Machinery by Avraham Harnoy Pdf

Covering the fundamental principles of bearing selection, design, and tribology, this book discusses basic physical principles of bearing selection, lubrication, design computations, advanced bearings materials, arrangement, housing, and seals, as well as recent developments in bearings for high-speed aircraft engines. The author explores unique solutions to challenging design problems and presents rare case studies, such as hydrodynamic and rolling-element bearings in series and adjustable hydrostatic pads for large bearings. He focuses on the design considerations and calculations specific to hydrodynamic journal bearings, hydrostatic bearings, and rolling element bearings.

Author : Cornelius T. Leondes
Publisher : CRC Press
Page : 370 pages
File Size : 47,7 Mb
Release : 2000-08-08
Category : Technology & Engineering
ISBN : 9056996789

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Electromechanical Systems by Cornelius T. Leondes Pdf

The technical committee on mechatronics formed by the International Federation for the Theory of Machines and Mechanisms, in Prague, Czech Republic, adopted the following definition for the term: Mechatronics is the synergistic combination of precision mechanical engineering, electronic control and systems thinking in the design products and manufacturing process.Due to developments in powerful computers, including microprocessors and Application Specific Integrated Circuits (ASICS), computational techniques, diverse technologies, advances in the design process of products and other factors, the field of mechatronics has evolved as a highly powerful and most cost effective means for product realization.

Author : Heinz P. Bloch,Claire Soares
Publisher : Gulf Professional Publishing
Page : 532 pages
File Size : 48,5 Mb
Release : 2001-06-15
Category : Business & Economics
ISBN : 0884155099

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Turboexpanders and Process Applications by Heinz P. Bloch,Claire Soares Pdf

Why Turboexpanders Are Applied; Overview Of Turboexpander Fundamentals; Application Of Cryogenic Turboexpanders: Processes; Applications Of Hot Gas Turboexpanders; Overview Of Turboexpander Construction Features; Rotor Dynamics; Construction Materials; Fabrication Issues; Installation Guides; Turboexpander Maintenance; Failure Analysis And Troubleshooting.

Author : Maurice L. Adams
Publisher : CRC Press
Page : 293 pages
File Size : 53,5 Mb
Release : 2018-04-19
Category : Technology & Engineering
ISBN : 9781351689991

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Bearings by Maurice L. Adams Pdf

Bearings: from Technoloogical Foundations to Practical Design Applications provides a modern study of bearing types, design factors, and industrial examples. The major classes of bearings are described, and design concepts are covered for rolling elements, surfaces, pivots, flexures, and compliance surfaces. Fluid film lubrication is presented, and the basics of tribology for bearings is explained. The book also looks at specific applications of bearing technology, including bearings in vehicles, rotating machinery, machine tools, and home appliances. Case studies are also included.

Author : Andrzej Krawczyk,S. Wiak
Publisher : IOS Press
Page : 588 pages
File Size : 40,8 Mb
Release : 2002
Category : Science
ISBN : 1586032321

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Electromagnetic Fields in Electrical Engineering by Andrzej Krawczyk,S. Wiak Pdf

This volume includes contributions on: field theory and advanced computational electromagnetics; electrical machines and transformers; optimization and interactive design; electromagnetics in materials; coupled field and electromagnetic components in mechatronics; induction heating systems; bioelectromagnetics; and electromagnetics in education.

Author : H. Weinstock
Publisher : Springer Science & Business Media
Page : 695 pages
File Size : 41,7 Mb
Release : 2013-03-09
Category : Technology & Engineering
ISBN : 9789401707527

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Applications of Superconductivity by H. Weinstock Pdf

This book, in essence the proceedings of a NATO Advanced Study Institute with the same title, is designed to provide in-depth coverage of many, but not all, of the major current applications of superconductivity, and of many that still are being developed. It will be of value to scientists and engineers who have interests in the research and production aspects of the technology, as well as in the applications themselves. The ftrst three chapters (by Clarke, Vrba and Wikswo) are devoted to an understanding of the principles, fabrication and uses of SQUID magnetometers and gradiometers, with the greatest emphasis on biomagnetism and nondestructive evaluation (NDE). For the most part, traditional low-temperature superconductor (LTS) SQUIDs are used, but particularly for NDE, high-temperature superconductor (HTS) SQUIDs are proving useful and often more convenient. The succeeding three chapters (by Przybysz, Likharev and Chaloupka) cover broader aspects of superconducting electronics. The ftrst two of these deal primarily with digital L TS circuits, while the third discusses in great detail passive component applications using HTS materials. Currently, HTS ftlters are undergoing intense J3-site testing at cellular telephone base stations. While it is clear that HTS ftlters outperform conventional ftlters in reducing signal loss and allowing for more channels in a given bandwidth, it isn't yet certain that the cellular telephone industry sees sufficient economic beneftts to make a ftrm decision to use HTS ftlters universally in its systems. If this application is generally adapted, the market for these ftlters should be quite large.

Author : Rajiv Tiwari
Publisher : CRC Press
Page : 1153 pages
File Size : 55,7 Mb
Release : 2017-11-22
Category : Science
ISBN : 9781351863636

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Rotor Systems by Rajiv Tiwari Pdf

The purpose of this book is to give a basic understanding of rotor dynamics phenomena with the help of simple rotor models and subsequently, the modern analysis methods for real life rotor systems. This background will be helpful in the identification of rotor-bearing system parameters and its use in futuristic model-based condition monitoring and, fault diagnostics and prognostics. The book starts with introductory material for finite element methods and moves to linear and non-linear vibrations, continuous systems, vibration measurement techniques, signal processing and error analysis, general identification techniques in engineering systems, and MATLAB analysis of simple rotors. Key Features: • Covers both transfer matrix methods (TMM) and finite element methods (FEM) • Discusses transverse and torsional vibrations • Includes worked examples with simplicity of mathematical background and a modern numerical method approach • Explores the concepts of instability analysis and dynamic balancing • Provides a basic understanding of rotor dynamics phenomena with the help of simple rotor models including modern analysis methods for real life rotor systems.

Author : Philip A. Studer
Publisher : Unknown
Page : 24 pages
File Size : 48,7 Mb
Release : 1978
Category : Electronic
ISBN : NASA:31769000540172

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Magnetic Bearings for Instruments in the Space Environment by Philip A. Studer Pdf

Author : Heinz P. Bloch
Publisher : John Wiley & Sons
Page : 592 pages
File Size : 49,6 Mb
Release : 2006-09-18
Category : Science
ISBN : 9780471929529

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A Practical Guide to Compressor Technology by Heinz P. Bloch Pdf

A Complete overview of theory, selection, design, operation, and maintenance This text offers a thorough overview of the operating characteristics, efficiencies, design features, troubleshooting, and maintenance of dynamic and positive displacement process gas compressors. The author examines a wide spectrum of compressors used in heavy process industries, with an emphasis on improving reliability and avoiding failure. Readers learn both the theory underlying compressors as well as the myriad day-to-day practical issues and challenges that chemical engineers and plant operation personnel must address. The text features: Latest design and manufacturing details of dynamic and positive displacement process gas compressors Examination of the full range of machines available for the heavy process industries Thorough presentation of the arrangements, material composition, and basic laws governing the design of all important process gas compressors Guidance on selecting optimum compressor configurations, controls, components, and auxiliaries to maximize reliability Monitoring and performance analysis for optimal machinery condition Systematic methods to avoid failure through the application of field-tested reliability enhancement concepts Fluid instability and externally pressurized bearings Reliability-driven asset management strategies for compressors Upstream separator and filter issues The text's structure is carefully designed to build knowledge and skills by starting with key principles and then moving to more advanced material. Hundreds of photos depicting various types of compressors, components, and processes are provided throughout. Compressors often represent a multi-million dollar investment for such applications as petrochemical processing and refining, refrigeration, pipeline transport, and turbochargers and superchargers for internal combustion engines. This text enables the broad range of engineers and plant managers who work with these compressors to make the most of the investment by leading them to the best decisions for selecting, operating, upgrading, maintaining, and troubleshooting.