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Topic: Magnetic levitation (Read 26 times) previous topic - next topic

ea123

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I forwarded the tube to a teacher at a technical school this afternoon and he was so enthousiastic he thinks about adding it as a exercise in the semester.

Thanks again (also for the code),


good! It' a nice didactical project indeed.

ea123

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Any chance of a picture?


Hi, look at the attachment. As you can see the connections are done on a breadboard...it's just an experiment.

GaryP

Time for a contest! Who can create longest gap!!!

Two of these and I could hang a painting on the air?

Cheers,
Kari
The only law for me; Ohms Law: U=R*I       P=U*I
Note to self: "Damn! Why don't you just fix it!!!"

PatrickM

Thanks much for sharing.  I have a very similar project, but I'm driving the magnet through a D/A and then an opamp instead of with a PWM signal.  I'm wondering if you ran into problems with the hall effect picking up both the field of the electromagnet and the field of the levitated magnet.  I was planning on using two hall effect sensors (one at each pole of the electromagnet) and looking at the difference in the signals.  This should give a good reading on the levitated magnet.

Also, how did you come up with your PID values?  Did you model the system in Matlab or something similar?  Or did you just experimentally come up with the values?

-Patrick

NI$HANT

PID Values? ,How you managed them?
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