Permanent magnet based magnetic levitation kit

Subtitle:

Article type: Research Article

Authors: Coelho, Marco Antonio Egito

Affiliations: Department of Electrical Engineering, Universidade de Brasilia, Campus Darcy Ribeiro, 70910-900, Brasilia, Brazil. Tel.: +55 61 31075571; E-mail: [email protected]

Abstract: This paper describes a new type of magnetic levitation kit designed for teaching in undergraduate control laboratory at Universidade de Brasilia-Brazil. The kit can achieve stable levitation of a relatively heavy weight with very low power consumption and can also be used to teach on open-loop stable systems. The design allows good linear models and clearly shows to the student the power of feedback, because levitation is only possible in closed-loop. The transfer function of the magnetic part and the full block diagram are also proposed.

Keywords: Electromagnetic forces, feedback, magnetic levitation, stability

DOI: 10.3233/JAE-140106

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 47, no. 4, pp. 963-973, 2015