T railway technology today 12 edited by kanji wako. Maglev railway technical research institute transrapid urban maglev shanghai maglev train how stuff works article. The passengers would need to activate a manual release mechanism and then the. Magnetic levitation rail system free pdf file sharing.
These principles govern the levitation of maglev trains. Maglev 1 magnetic levitation experiment quanser consulting inc. Magnetic levitation definition of magnetic levitation by. With maglev, a vehicle is levitated a short distance away from a guide way using magnets to.
Magnetic levitation is a process by which a magnet over a piece of a metal causes electrical current to flow in the metal that, in turn, produce forces that push the magnet upward. The first patents for magnetic levitation maglev technologies were filed by frenchborn american engineer emile bachelet all the way back in the early 1910s. T railway technology today 12 edited by kanji wako magnetic. 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. General science and technology buffs will find this accessible book fascinating and might be tempted to try a little levitation themselves. Between the train and the rails there is magnetic repulsion bound by two transparent plates attached to the train.
Measurements of the magnetic field, at ground level directly under the standard 8mhigh elevated guideway show a magnetic field of only 0. It has a stationary piece, the stator, which surrounds a rotating piece, the rotor. Speed, pollutionfree and quiet, magnetic levitation express is tomorrows technology being used today. A region in the space around a magnet where the magnetic force can be felt.
The big difference between a maglev train and a conventional train is that maglev trains do not have an engine at least not the kind of engine used to pull typical train cars along steel tracks. Mls consists of the electromagnet, the suspended hollow steel sphere, the sphere position. Lateral guidance basic principle of maglev trains 8. Maglev trains are a necessity for modern time transportation needs and vital for the future. The interaction between electromagnetic force and gravity will always keep a dynamic balance, levitating the maglev train above the rail.
Levitation filetype pdf earnshaws theorem states that a collection of point charges cannot be maintained in a stable earnshaws theorem forbids magnetic levitation in many. All structured data from the file and property namespaces is available. Earnshaws theorem forbids magnetic levitation in many common situations. Maglev short for magnetic levitation trains can trace their roots to technology pioneered at brookhaven national laboratory. The name maglev is derived from magnetic levitation. Magnetic levitation track construction instruction manual august 2012 page 1 this document is intended to be used by science olympiad teams to assist them in building a magneticallylevitated track that will meet all specifications in the event rules for magnetic levitation. Maglev derived from magnetic levitation is a system of train transportation that uses two sets of magnets, one set to repel and push the train up off the track, and another set to move the elevated train ahead, taking advantage of the lack of friction. The book describes howmajor advancements in linear motor and magnet technologies have enabledthe development of the linearmotorpowered maglev train, which has a highspeed advantage over. Describe how the magnets for magnetic repulsion are used differently than the magnets that are used for magnetic attraction.
Mar 18, 2020 the trains are made up of wagons that are coupled together and transported by a first car called a locomotive. Maglev derived from maglev could be a conveyance technology that uses magnetic levitation to move vehicles while not creating contact with the bottom or an electrical pickup. This current then induces a magnetic field that levitates the train. 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. The method realizes stable and welldamped levitation. The common point in all applications is the lack of contact and thus no wear and friction. Former physicist at ge and lecturer at mit, james d.
Maglev train, also called magnetic levitation train or maglev, a floating vehicle for land transportation that is supported by either electromagnetic attraction or repulsion. Dowling magnets, the maker of the magic bullet train kit, has a. Today, thanks to technology, some are moved on tracks designed for magnetic levitation trains. This project is a continuation of work done by paul friend in 2004. First, the trains velocity induces a current in the track. Simple magnetic levitation train seminar reportpdf ppt download. Magnetic levitation is a way of using electromagnetic fields to levitate objects without any noise. Jan 31, 2016 the operation is not exactly the same as the real maglev but a little like us. Magnetic levitating trains electrical and computer. Magnetic levitation maglev is a system of train transportation that uses two sets of magnets, one set to repel and push the train up off the track as in levitation, then another set to move the floating train ahead at great speed taking advant. Maglev trains have to perform the following functions to operate in high speeds 1. Propulsion is the force that drives the train forward. This increases efficiency, reduces maintenance costs, and increases the useful life of the system. Magnetic levitation simple english wikipedia, the free.
Pseudolevitation of two permanent magnets on a guide rod. The engine for maglev trains is rather inconspicuous. Jun 14, 2016 maglev short for magnetic levitation trains can trace their roots to technology pioneered at brookhaven national laboratory. The stator is used to generate a rotating magnetic field. This results in the following differential equation for the ball dynamics. Richard post from lawrence livermore national labs llnl. Magnetic levitation the need for fast and reliable transportation is increasing throughout the world. The magnetic levitation system mls is a complete after assembling and software. Magnetic levitation trains have a lot of applications and ad vantages like they are fast exceeding the speed of 300 mph. Files are available under licenses specified on their description page. Magnetic levitation, maglev, or magnetic suspension is a method by which an object is suspended with no support other than magnetic fields.
Magnetic levitation driving without wheels presentation outline 1. Maglev magnetic levitation train magnetic games youtube. Magnetic levitation is a highly advanced technology. Maglev derived from magnetic levitation uses magnetic levitation to propel vehicles. The trains are made up of wagons that are coupled together and transported by a first car called a locomotive. Laser sensors provide noncontacting position feedback and incorporate proprietary conditioning to electronics for signal noise reduction and ambient light rejection. Maglev uses an electric linear motor to achieve propulsion. This signal is fed back through a levitation constant that is defined by properties of the levitation halbach array and the track design.
Simple magnetic levitation train seminar reportpdf ppt. A diagram of the model train you will build in this science project is shown in figure 2 below. James powell and gordon danby of brookhaven received the first patent for a magnetically levitated train design in the late 1960s. Simple magnetic levitation train seminar report pdf ppt download the answer to this transportation problem lies in the world of electro magnetism and superconducting magnets. Imagine that instead of cars, people had small passenger vehicles that used propulsion and levitation magnets. Learn about the maglev track and see a diagram of a magelev track. Maglev research and development began in germany and japan during the early 1970s. Instead of using fossil fuels, the magnetic field created by the electrified coils in the guideway walls and the track combine to propel the. Additional effects that allow maglev trains to remain at a steady height above the filetye include the meissner effect, and magnetic flux trapping. The magnetic levitation express is the best choice for children to experiment how maglev trains are built and work. On may 14, the brookings institution hosted a forum to address both the challenges and opportunities for magnetic levitation technology maglev in the u. The operation is not exactly the same as the real maglev but a little like us. Magnetic levitation track construction instruction manual august 2012 page 1 this document is intended to be used by science olympiad teams to assist them in building a magneticallylevitated track that will meet all specifications in the event rules for magnetic levitation and allow students to calibrate a maglev car in preparation for.
It employs diamagnetism, which is an intrinsic property of many materials referring to their. A second train set was completed at the end of 1997, making it possible to conduct various tests with two trains. Vol 2, no 1 2016, status and research progress of the linear rail transit system in china. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. The goal of the magnetic levitation train maglev project is to develop a small scale magnetic levitation train based on inductrack technology developed by dr. Magnetic force is used to counteract the effects of the gravitational acceleration and any other accelerations. These superfast trains float above their rails, darting from place to place at remarkable speeds. Highspeed maglev trains promise dramatic improvements for human travel widespread adoption occurs. A dialogue window will pop up, asking you to enter file name to. With their new insights into the science of magnets, students will use the. Maglev train transportation systems and technology. A new strategy for improving the tracking performance of magnetic. Maglev technology and applications hyungsuk han, dongsung kim auth.
One electromagnet pole faces a black post upon which a 2. A piece of iron, iron ore, or compound containing iron in which the atoms are arranged to display a magnetic field. With maglev, a vehicle is levitated a short distance away from a guide way using magnets to create both lift and thrust. The maglev project consists of two construction phases. Some highspeed trains actually use magnetic levitation, meaning they float above the track using magnets, and do not actually use wheels. This book provides a comprehensive overview of magnetic levitation maglev technologies, from fundamental principles through to the stateoftheart, and describes applications both realised and under development. If the force is large enough, the moving magnet can levitated. Procedures for safety and risk assessment of maglev systems. They run on fixed rails and transport passengers or goods. In it, railroading technology will away with moving components, permitting vehicles to maneuver additional swimmingly and more. The magnetic levitation technology can be used as an efficient technology in. Today, maglev trains are able to move nearly as fast as a plane. In this process an object is suspended above another with no other support but magnetic fields. Magnetic levitation track construction instruction manual.
Maglev train propulsion and levitation may involve the use of superconducting materials, electromagnets, diamagnets, and rareearth magnets. Two different types of maglev trains have been built and demonstrated at full scale at speeds up to 500 kmhr magnetic attraction ems electromagnetic suspension systems, using servocontrolled electromagnets on the train car, attracted upward to a ironplate rail. Aug 10, 2019 additional effects that allow maglev trains to remain at a steady height above the filetye include the meissner effect, and magnetic flux trapping. Even before that, in 1904, american professor and inventor robert goddard had written a paper outlining the idea of maglev levitation source. Current projects nclusion introduction maglev, or magnetic levitation, is a system of transportation. This signal is fed back through a levitation constant that is defined by properties of. The magnetized coil running along the track, called a guideway, repels the large magnets on the train s undercarriage, allowing the train to levitate between 0. Innovative maglev or magnetic levitation trains move by using magnets instead of wheels.
The magnetic levitation technology can be used as an efficient. Magnetic levitation maglev or magnetic suspension is a method by which an object is suspended with no support other than magnetic fields. Magnetic levitation is used in a new generation of train that will have cruising speeds. Along certain mediumrange routes usually 320 to 640 km 200 to 400 mi, maglev can compete favorably with highspeed rail and airplanes. Maglev trains were conceptualized during the early 1900s by american professor and inventor robert goddard and frenchborn american engineer emile bachelet and have been. The technological innovation behind these trains comes alive for students in this transportation engineering unit. Magnetic levitation principles introduction magnetic fields are used to describe forces at a distance from electric currents. The idea came to powell as he sat in a traffic jam, thinking that there must be a. The use of magnetic fields to suspend an object above another object without solid mechanical support. Download the seminar report for magnetic levitation. The raising of an object into the air without physically supporting the object. The earths core is believed to be a mix of iron and nickel, giving the earth its own magnetic field.
This is a classic control problem used in many practical applications such as transportation magnetic levitated trains, using both analogue and digital solutions to maintain a metallic ball in an electromagnetic field. Manipulating magnetic fields and controlling their forces can levitate an object. The ball elevation from the post is measured using a sensor embedded in the post. Magnetic levitation is the use of magnetic fields to levitate a usually metallic object.
Magnetic levitation and propulsion maglev trains science fair projects and experiments. But though magnetically levitated trains have been the focus of much of the worldwide interest in maglev, the technology is not limited to train. Magnetic levitation methods and modeling in maglev trains, 2014 issn. The principle difficulties encountered when applyingmaglev technology to different systems, namely air gap control andstabilization, are addressed in detail. Maglev trains sound like the stuff of science fiction, but it s yet another scientific marvel that engineers have made a reality. This page was last edited on 4 october 2019, at 11. Students will send magnets sailing, help magnets hover, and poke around magnetic fields. Maglev trains use the physical forces of magnetism and electromagnetism to not only levitate the train, but to push and. Magnetic levitation theory and application based on levitation such as train,toy,turbine etc. The maglev track allows the train to float above the track through the use of repelling magnets. Maglev train download ebook pdf, epub, tuebl, mobi.
Pdf this paper involves the design, hardware, technology, application and future uses of magnetic levitation trains. May 04, 2015 maglev trains have to perform the following functions to operate in high speeds 1. All structured data from the file and property namespaces is available under the creative commons cc0 license. Levitation the passing of the superconducting magnets through levitation coils on the side of the track induces a current in the coils and creates a magnetic field. Publishers weekly 20110812 if you thought magnetic levitation was mostly about flying trains, then read rising force. Apr 10, 2011 magnetic levitation theory and application based on levitation such as train,toy,turbine etc. Highspeed rail has been the solution for many countries.
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