![]() ![]() The coils needs to be arranged to the magnets like seen above, this kind of arrangement will cerate the optimal force to the three coils. The arrangement of the coils to the magnets: At frist it sounds simple "just three coils between some magnets", but after some tests, I could say it was really hard to find the right parameters: Sadly the infomations, which are necessary to build an Ironless Linear Motor aren't descriped that well in this article, so I have written down my own experiences, while building this motor. For a better imagination, please take a look at this Wikipedia article. The coils will create a periodic moving magnetic field, which will result in a force which will drive the motor. You controll the Linear-Motor like a rotary motor by connecting a three phase sinusiodle current at each of the coils. Theoretectly a Linear Motor is just an unrolled three phase Motor. # You can see this motor live at Maker Faire Ruhr 2019 # # If you like my Instructable, please vote for me in the Epilog-Contest 10# Travel-Speed: 200mm/s (at 24V, I think there is much more possible, but my coils are getting to hot above 24V)Īccuracy: 0.3mm (remember there is just a 400pulse/rev encoder)Ĭost: < 100€ if you have all the tools like CNC-Mill and 3D-Printer at home.įast movements position is set in the Arduino-File:įixed position the Motor tries to withstand external forces to keep his position: This project helped me a lot to understand, how a Linear-Motor works in general, and how to programm a closed-loop controller for it. However there are some points which need to be improved especially in the position regulation. ![]() After one month of research and improvements I can say, I have built my own working Ironless Linear-Servo-Motor. So I started to create CAD-Drawings and Electronics. Theoretecly a Linear-Servo-Motor is just a three phase sychronous motor with a closed loop position feedback. But after some research I thought it will be possible to build my own Linear-Motor. So buying a Linear-Motor is not an option anymore. Sadly these Motors are very expensive (>1000€ per piece). ![]() I thought it would be really cool, if I could addapt these kind of motor in a Laser or 3D-Printer Application. It was quite astonishing how fast these Motors can move with an incredible precision. When I visited one of the biggest trade faires for Automation here in Germany, I saw a lot of Linear-Motors in Industry Applications. Place your ads on webportal and in Railway Supply magazine.Hi, in this Instructable I want to show you, how to build your own Linear-Servo-Motor for Linear-Movement-Applications.īut at first the story about this Instructable: The lab will now build a full-scale 60-kilometer test track in Yanggao County, with construction to be carried out in three phases, eventually reaching a top speed of 1,000 km/h.ĪBB receives $170m orders from Stadler Find the latest news of the railway industry in Eastern Europe, the former Soviet Union and the rest of the world on our page on Facebook, Twitter, LinkedIn, read Railway Supply magazine online. The speed of 129 kilometers per hour achieved over this short distance is a preliminary test result. The Vactrain has been tested on a two-kilometer tube in Shanxi Province in northern China. Actually, it is based on this type of technology that the Hyperloop project, proposed by Elon Musk back in 2013. Theoretically, such trains should be able to move faster than sound, that is, reach speeds of 500 kilometers per hour or even higher. This train is also a maglev type and is a non-contact hover train, but this time it will not encounter air resistance as it will travel in a low vacuum tube or tunnel. However, the train in question is based on a different technology. Ukraine is in difficult negotiations on the continuation of the grain agreement For example, during tests in Japan in 2015, a speed record of 603 kilometers per hour was set on a maglev. Thus, it can reach much higher speeds than conventional trains. The advantage of the train, which “floats” in the air due to the magnetic field, is that it is not subject to frictional resistance, since it does not come into contact with the rails. It is reported by Railway Supply magazine with reference to China Daily. Officials from the team that conducted the experiment explained that this was the first test of maglev in a “low vacuum tube”. The train, called the Vactrain, was able to reach 129 kilometers per hour during tests carried out in a two-kilometer tube. Chinese researchers have successfully tested a magnetically driven train in a low vacuum tube. ![]()
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