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Repulsive Electromagnetic Levitation by 4 coils

bfulmind

Hi everybody

I'm a Mechanical engineering student but interested in Electronics so I am somehow beginner.

I'm working on magnetic levitation, both attractive(from top) and repulsive(from bottom). levitating from top was successful since there are so many articles and videos available but there isn't any article or guide about repulsive levitation!! I need to understand the fundamental of this type of levitation.

It would be greatly appreciated if you share any article, Arduino code and schematic.

 

Thanks so much

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  • Sorry to bump this post--Have you made any progress? I recently decided I wanted to build a slightly larger version of this for my high school Senior Project. I'd be happy to collaborate with you to share ideas.

     

    From my current understanding, you would need the 4 electromagnets in the center repelling the levitated object, and a ring of attracting magnets (permanent, not electromagnets) around the outside. Then, in the very center of the base with all of these magnets, you'd have 3 Ratiometric Hall Effect sensors (not normal Hall Effect sensors) to sense the X, Y, and Z position of the levitated object. This is because Ratiometric Hall Effect sensors detect the strength of magnetic fields, and that somehow can be used to figure out the position. (still trying to figure out how that works.)

     

    Then, you have to build some sort of analog circuit that constantly modulates the 4 electromagnets to balance the levitated object. It's like tug of war but with 4 ropes in a + shape. I don't know how to build such a circuit, but I'm doing research on that too. What are your thoughts?

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  • Sorry to bump this post--Have you made any progress? I recently decided I wanted to build a slightly larger version of this for my high school Senior Project. I'd be happy to collaborate with you to share ideas.

     

    From my current understanding, you would need the 4 electromagnets in the center repelling the levitated object, and a ring of attracting magnets (permanent, not electromagnets) around the outside. Then, in the very center of the base with all of these magnets, you'd have 3 Ratiometric Hall Effect sensors (not normal Hall Effect sensors) to sense the X, Y, and Z position of the levitated object. This is because Ratiometric Hall Effect sensors detect the strength of magnetic fields, and that somehow can be used to figure out the position. (still trying to figure out how that works.)

     

    Then, you have to build some sort of analog circuit that constantly modulates the 4 electromagnets to balance the levitated object. It's like tug of war but with 4 ropes in a + shape. I don't know how to build such a circuit, but I'm doing research on that too. What are your thoughts?

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