Sc thesis 5 in 1990 on the design of magnetic induction bearings, the author continued to develop these bearings, also known as electrodynamic bearings, for skf and later also for the german vacuum industry until 1994. Magnetic levitation is a process by which a magnet over a piece of a metal. Ppt magnetic levitation powerpoint presentation free. Due to the lack of mechanical contact, magnetic levitation systems are free of problems caused by friction, wear, sealing and lubrication. Apr 10, 2011 magnetic levitation theory and application based on levitation such as train,toy,turbine etc. Magnetic levitation has been a keen area of research, especially in the field of automotive where low losses due to friction and low energy consumption are important considerations. Modelling and design of magnetic levitation systems for. With maglev, a vehicle is levitated a short distance. Magnetic levitation wikimili, the free encyclopedia. One electromagnet pole faces a black post upon which a 2. The basic idea behind an electromagnet is extremetric ly simple, by running elec current through a wire. Magnetic levitation is a method by which an object is suspended in air by means of magnetic force. A free powerpoint ppt presentation displayed as a flash slide show on id. Colorado intermountain fixed guideway authority cifga sandia national laboratories snl maglev transit group mtg.
I understand that my thesis may be made electronically available to the public. Magnetic levitation is a highly advanced technology. Human levitation occur s when the physical bod y rises into the air and then hovers or moves around, seemingly in defiance of the force of gravity. Controller design for magnetic levitation system ethesis. Since then, japans shinkansen network has expanded considerably, and its success has prompted rapid development of highspeed railways in other countries. Highspeed rail has been the solution for many countries. The exception comes in case of diamagnetic and superconducting materials and by controlling magnetic field by control method. Applying a voltage between the tip and sample leads to a tunneling current.
Magnetic levitation principles introduction magnetic fields are used to describe forces at a distance from electric currents. The name maglev is derived from magnetic levitation. This is to certify that the work in the thesis entitled controller design for magnetic levitation system by abhishek nayak is a record of an original research work carried out by him under my supervision and guidance in partial fulfillment of the requirements for the. A theorem due to earnshaw proves that it is not possible to achieve static levitation using any combination of fixed magnets and electric charges. The levitation force per unit volume of the body is given by. Due to these special characteristics of superconductors, no electrical energy is lost while flowing and since magnetic levitation above a superconductor is possible. When assembled as described, the system exhibits high sensitivity to initial conditions and considerable visible wobble of the object. The use of magnetic fields to suspend an object above another object without solid mechanical support.
Magnetic levitation theory and application based on levitation such as train,toy,turbine etc. Electromagnets and superconducting magnets have allowed us to create a magnetic levitation train nicknamed maglev that floats on the track instead of being directly on it. Magnetic levitation the need for fast and reliable transportation is increasing throughout the world. Simple magnetic levitation train seminar reportpdf ppt download the answer to this transportation problem lies in the world of electro magnetism and superconducting magnets. Magnetic levitation a seminar report submitted in partial fulfillment of the requirements for the degree of bachelor of technology in electrical engineering submitted by. Examples of magnetic levitation systems can be found throughout academia and industry. T railway technology today 12 edited by kanji wako. This book provides a comprehensive overview of magnetic levitation maglev technologies, from fundamental principles through to the stateoftheart, and describes applications both realised and.
If huma n levitatio ins ever proved to exist, and if it involves an energy that. Earnshaw stated that static arrangements of magnet cannot levitate a body. Magnetic levitationbased electromagnetic energy harvesting. This kit is based on a lowcost design developed in 4, which uses proportional. The term levitation refers to a class of technologies that uses magnetic levitation to propel vehicles with magnets rather than with wheels, axles and bearings. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Introduction magnetic levitation is becoming widely applicable in magnetic bearings, highspeed. The magnetic levitation technology can be used as an efficient technology in. Ppt magnetic levitation powerpoint presentation free to. Magnetic levitation of liquid metals journal of fluid. Magnetisation of materials due to a set of isolated atoms.
Some of these applications include semiconductor fabrication 1, production of steel 2, high speed commuter trains 3, bearing design 4 and machine tools 5 in which magnetic levitation, in various forms has played a key role. Maglev derived from magnetic levitation uses magnetic. The physics of magnetic levitation university of alaska. Magnetic force is used to counteract the effects of the gravitational acceleration and any other accelerations the two primary issues involved in magnetic levitation are lifting forces.
I certify that this thesis does not, to the best of my knowledge and belief. The passengers would need to activate a manual release mechanism and then the. This thesis presents the design of two magnetically levitated high precision positioning systems based on permanent magnet linear synchronous motors pmlsms. Modelling and design of magnetic levitation systems for vibration. In other words, they are repelled by magnetic fields. Levitating bearings using superconductor technology. Permanent magnet levitation requires either passive or active stabilisation. Magnetic levitation maglev or magnetic suspension is a method by which an object is suspended with no support other than magnetic fields. Magnetic levitation based on pmlsms requires the motors to operate with a variable airgap length but. Feedback with electromagnets can be divided into magnetic suspension and levitation. The common point in all applications is the lack of contact and thus no wear and friction.
Thus the magnetic levitation system is inherently unstable without any control action. Magnetic levitation theory synonyms, magnetic levitation theory pronunciation, magnetic levitation theory translation, english dictionary definition of magnetic levitation theory. Apr 10, 2003 the levitation force per unit volume of the body is given by. Magnetic suspension works via the force of attraction between an electromagnet and some object. Slideshare uses cookies to improve functionality and. Railway technology today 12 edited by kanji wako magnetic levitation maglev technologies the tokaido shinkansen began operations in 1964 and was an immediate success. Magnetic levitation technique is found to be the main alternative to fossil fuels to overcome its less availability. Magnetic levitation can be stabilised using different techniques, here rotation spin is used. Traditionall most y levitation reports have originated from seven groups. Magnetism ht10 rj nicholas 14 exchange interaction shifts energy levels of electrons by less than typical band widths in metals, so we have to. Collective magnetisation magnetic moments of adjacent atoms interact with each other to create a spontaneous alignment ferromagnetism, ferrimagnetism, antiferromagnetism some useful background definition of the fields.
Jens hillebrand term paper engineering industrial engineering and management publish your bachelors or masters thesis, dissertation, term paper or essay. Electromagnetic levitation works via the magnetic force of repulsion. Paulo jose da costa branco examination committee chairperson. Each of the above conditions provides solutions to the problem of magnetic levitation. It employs diamagnetism, which is an intrinsic property of many materials referring to their. Here, we use magnetic levitation principles for biological characterization and monitoring of cells and cellular events. In this thesis, a new large gap magnetic levitation system is designed, developed and successfully tested. Magnetic levitation maglev is a highly advanced technology. This particular kind of contamination occurs when free particles reach the surface. Vasav shethna bee110 tushar shingala bee111 under guidance of. The colorado department of transportation has entered into a memorandum of understanding to conduct research and development under the federal urban magnetic levitation program. From the ones on the fridge, the speakers in your car, and propelling high speed trains, magnets are being used constantly. The ball elevation from the post is measured using a sensor embedded in the post. The replacement of mechanical components by wearfree.
This thesis presents the design of two magnetically levitated high precision. This paper aims at development of non linear dynamic. Magnetic levitation article about magnetic levitation by. Neither this thesis nor any part of it has been submitted for any degree or academic. Abstract the term levitation refers to a class of technologies that uses magnetic levitation to propel vehicles with magnets rather than with wheels, axles and bearings. This increases efficiency, reduces maintenance costs, and increases the useful life of the system. Simple magnetic levitation train seminar reportpdf ppt. The ability of levitationbased harvesting systems to operate autonomously for long. The focus of this thesis is the feedback technique. Maglev monorail proceedings of 22nd irf international conference, 22nd march 2015, pune, india, isbn. Hormaz amrolia department of electrical engineering institute of technology, nirma university ahmedabad.
Magnetism ht10 rj nicholas 1 magnetic properties of materials 1. The magnets used in magnetic levitation suspend an object free of contact with any surface, making it particularly appropriate for highspeed 275300 mph435475 kmh transportation, where it greatly reduces friction and allows for fast, quiet operation. Maglev derived from magnetic levitation uses magnetic levitation to propel vehicles. Controller design for magnetic levitation system ethesis nit. The magnetic levitation technology can be used as an efficient technology in the. The physics of magnetic levitation physics 212x spring 2011 john dutton 04122011 magnets make up a huge part of our everyday lives. Colorado department of transportation magnetic levitation. This principle is employed in highspeed trains that travel at 483 kmh 300 mph while levitating on a cushion of air. Static levitation means stable suspension of an object against gravity. Design, implementation and control of a magnetic levitation. Design, implementation and control of a magnetic levitation device.
The process of levitation melting of metals is examined analytically and numerically for the case of axisymmetric toroidal highfrequency currents. B is the magnetic flux density units tesla h is the magnetic field strength units am1. T railway technology today 12 edited by kanji wako magnetic. The governing equations for the meanvelocity field and associated free surface shape are derived under the assumption of low magnetic reynolds number and the neglect of thermal effects. Magnetic levitation definition of magnetic levitation by.
Kereta api maglev tidak mempunyai roda dan bergerak dengan terapung. Magnetic levitation is a way of using electromagnetic fields to levitate objects without any noise. Abstractlowcost magnetic levitation project kits are used in teaching system design in an introductory undergraduate control systems course. This thesis is submitted as partial fulfillment of the requirements for the award. The kit is easy to assemble, but initial performance of the device is intentionally poor.
This page was last edited on 7 september 2019, at 04. All structured data from the file and property namespaces is available under the creative commons cc0 license. Magnetic force is used to counteract the effects of the gravitational acceleration and any other accelerations. These advantages have made magnetic levitation systems a great candidate for clean room applications. Students receive individual kits along with assembly instructions for building a magnetic levitation device that is marginally stable, and they are then challenged to modify the system to improve. Maglev 1 magnetic levitation experiment quanser consulting inc.
The aim of this thesis was to investigate magnetic levitation and to design a working system capable of. Files are available under licenses specified on their description page. Hormaz amrolia department of electrical engineering institute of technology, nirma university ahmedabad 382481. Sample error calculation series for a nominal measurement of 30. Due to the lack of mechanical contact, magnetic levitation systems are free of. Modeling and control of a magnetic levitation system concepts emphasized. Dynamic modeling, timedomain analysis, pi and pid feedback control. There are, however, a few ways to levitate by getting around the assumptions of the theorem. Magnetic levitation has been used to implement lowcost and maintenance free electromagnetic energy harvesting. Magnetic levitation based on pmlsms requires the motors to operate with a variable airgap length but previous research in the.
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