Resumo

RONDON, ELIANA; CARRILLO, JULIO  e  CORREA, RODRIGO. MAGNETIC LEVITATION IN FLUIDS OF HIGH VISCOSITY AND DENSITY. Dyna rev.fac.nac.minas [online]. 2010, vol.77, n.162, pp.387-395. ISSN 0012-7353.

This article describes the design of a magnetic levitation prototype that suspends a metallic shell submerged in a dielectric oil of substantial higher viscosity and density compared to air. A closed-loop control system was implemented using a phase lag compensator with the purpose of positioning a metallic spherical shell in a specific point. The behavior of the system was analyzed with different changes in the oil viscosity; the system became unstable when its viscosity was decreased due to the oil temperature increasing. Similarly, it shows the results of the system simulation and how they were contrasted with the experimental results.

Palavras-chave : magnetic levitation; phase lag compensator; control systems; modeling..

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