Timeline for Difficulties in tuning magnetic levitation system on Arduino and MATLAB?
Current License: CC BY-SA 4.0
12 events
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| Oct 20 at 12:03 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Jun 20 at 21:01 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Apr 1, 2022 at 4:19 | answer | added | Real Magnetics | timeline score: 1 | |
| Mar 31, 2022 at 21:27 | comment | added | Thanos | The mass of the neodymium magnet is 9.46grams, the current is 1A and the distance it needs to be levitated at is 8mm, plugging those values in resulted in the above transfer function. This was then simulated on Simulink to get some suitable PID gain values. This, unfortunately, did not work, as the values were so large and did not work at all with my system. Now it feels like I'm out of options because apart from trying on simulink, it feels like im running in the dark with tuning this on just the Arduino | |
| Mar 31, 2022 at 21:24 | comment | added | Thanos | Thus after getting the results within Figure 0 equation 4 of that post, I then equalled it to mx" again, laplace transformed it, and solved to get X(s)/I(s). The above transfer function are the results of me inputting data into the model. | |
| Mar 31, 2022 at 21:22 | comment | added | Thanos | Thanks for that @Nedd. I made sure to make this easier for myself by first making a mechanical model of my system using the second order equation of motion. I basically got mx" = mg(object) - f(x, i) (electromagnetic force as function of distance and current). I followed some papers about electromagnetic levitation which used Faraday's inductive energy storage law to represent the force of the electromagnet. To summarise, I ended up getting the contents within this post electronics.stackexchange.com/questions/613288/… | |
| Mar 31, 2022 at 21:05 | comment | added | Nedd | In addition to the mass of the magnet the strength and shape of it will also determine some of the control parameters. Note that even in the video the user needs to make an adjustment when trying to balance the cylindrical shaped magnet. | |
| Mar 31, 2022 at 20:12 | comment | added | Thanos | Yeah it's a ratiometric one fortunately enough, can detect/output a range of values depending on the distance of the magnetic field | |
| Mar 31, 2022 at 18:07 | comment | added | jsotola | maybe the hall-effect sensor is not the linear type | |
| Mar 31, 2022 at 18:04 | comment | added | Thanos | It's weak, when the electromagnet is turned off, the neodymium magnet does not fly up to the electromagnet unless it gets turned on. | |
| Mar 31, 2022 at 17:48 | comment | added | jsotola |
neodymium magnet's weight. ... what about the force of the magnet's attraction to the electromagnet core?
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| Mar 31, 2022 at 17:31 | history | asked | Thanos | CC BY-SA 4.0 |