I need researches about "Bearingless Brushless DC motor" about the magnetic forces and the displacement of the rotor that will be measured by hall sensors,,,I am trying to build a matlab simulation but I cant find an appropriate equations
Is this possible? You will have to stabilise the rotor in 3 translational axes, and 3 rotational axes. Since this is impossible to do with passive magnetic circuits at least some of the axes will need active stabilisers. This is not a trivial undertaking. What level of complexity do you expect your motor to have? What advantages do you expect to get from such an arrangement? You will achieve more by attempting this project in steps, overcoming each problem as it arises. First get a passive stabilisation system to work on as many axes as you can, then add stabilisers to the others. Best wishes with your work!
Tony Maine > Sure it's possible! Here is an easy video from University of Linz: https://www.youtube.com/watch?v=GttD4jCR1CA
There are many different principles to achieve that, depending on what degrees of freedom you want to control.
Zahraa Ahmed > Papers I could recommend you to read that address your question are made from two labs in Switzerland (ETHZ and EPFL). You can type in Google or IEEEexplore "Kolar bearingless" and "Perriard bearingless" (these are the two names of professors). If you don't have access, you can find papers on ResearchGate and asks the full-text (ex: Conference Paper Passive, Active and Loss Tradeoffs in High-Speed Bearingless Motors
)Best,
Guillaume
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