Electromagnetic Levitation System for Thin Steel Plate Using Electromagnet and Permanent Magnet

(Basic Consideration on Deflection of Thin Steel Plate)

Abstract

Thin steel plates widely used in various industrial products are contacted with rollers in a production line. There is a problem in that the quality of the surface is deteriorated, such as scratches and peeling of the plated layer of the thin steel plate, by this conveyance method. We have proposed a magnetic levitation system that uses electromagnets and permanent magnets in combination, utilizing static attraction of permanent magnets to assist levitation. We used the genetic algorithm to search for the optimal placement of permanent magnets in order to improve the deflection of the steel plate during levitation. In this report, the weighting factors of the evaluation function are changed, and the placement results of permanent magnets obtained from GA are discussed.