This system uses an electromagnet to levitate a small magnet in midair. The small magnet levitates in the air indefinitely without any disturbance. The air gap is about 2 cm (3/4"). The supply voltage is 5 V and the supply current is about 0.3 A. The vertical position of the levitating magnet is measured using a linear Hall effect sensor and the current in the electromagnet is actively controlled using a dspic30f3012 digital signal processor. Three push buttons are included to adjust the vertical position of the levitating magnet and to apply a sinusoidal, square or sawtooth reference signal. Both the amplitude and frequency of the reference signal can be adjusted using the push buttons. questions or comments? contact us at damla1967@gmail.com
Electromagnetic Levitation System
By admin in how to magic tricks
Jan
30
Comments
@kmztan
Thank you.
@BayesianMan
Why do you think it is fake?
@foupana
Thank you.
Very cool experiment,thanks for share
@BayesianMan
It isn’t fake, idiot. I bought one of their magnetic levitation kits and it’s working perfectly. This is one of the best magnetic levitation systems that I’ve ever seen. If I were you, I wouldn’t open my mouth for things that I have no idea about.
fake.
The force applied by the electromagnet is adjusted based on the vertical position of the levitating magnet to balance its weight.
How are you getting it to balance? Is it balanced between gravitational and magnetic forces? or do I just sound like an idiot xD.
@cr99991
Thank you very much. I highly value your opinion.
1. I used a simple lowpass filter in this system but decided not to use it in my later designs to get rid of the delay.
2. The sampling rate is about 8 kHz.
3. As you have guessed, it is just a ferrite inductor. I could not find a suitable coil and wound that coil by hand. We are now using custom coils supplied by a manufacturer.
4. We have done some work on repulsive system. It is not robust enough yet and we are still working on it.
@FilmBorne
I have not.
Wonderful design. I studied your design a good bit and it was actually very important in convincing me that digital control can be used with good results.
I have many questions:
Do you use frequency compensation between your hall effect sensor and your micro’s input?
What is your ADC sample rate?
I take it your electromagnet is just a large ferrite inductor? Where did you buy it?
Have you considered building a more complex, possibly repulsive controller?
has anyone every tried to invented a real life UFO for 2012?
Oh, in that case, I do not know the answer to your question, as it is out of my area of expertise. However, I do not believe that this technology could be used for that purpose.
Actually i was refering to real ufos and how long it will take this tech to make them possible
Thank you for your patience and sorry for the unexpected delay. They will be available either later this week or at the latest the first week of January. Please visit zeltom(dot)com for updates.
So when do we get ufos?
@tonyrosam
It is possible to increase the distance a little further but the maximum achievable distance is inherently limited by the force applied by the electromagnet and the resolution of the sensor.
so can this device be used at large distances?
Thank you. Yes, it is the same technology.
This is a pretty nice magnetic levitation device. Is this the same technology used in maglev trains?
Unfortunately, I cannot disclose the circuit diagram since a manufactured version is commercially available as a kit or fully assembled unit. Please check out zeltom(dot)com for more info.
hi sky!
your project seems to me amazing. I am of Mexico. it would want to know if you have the diagram of the circuit., since I want to make one equal, is that I am beginning with this of the circuits. thank you very much of all heart
thanks for your info.
According to Wikipedia, levitation (from Latin levitas “lightness”) is the process by which an object is suspended against gravity, in a stable position, without physical contact. Thus, electromagnetic levitation is the appropriate terminology. This is also the standard terminology used in the (control) literature.
No, it does not spin. For the magnet to spin, there must be a tangential force acting on the magnet and such a tangential force can be the result of a radial current in the magnet. Thank you for the links. I watched both videos.