2018 年 26 巻 1 号 p. 191-197
Thin steel plates are generally conveyed while in contact with rollers in the conveyance process. This leads to deterioration in the quality of the plate surface, such as flaws and peeling of the plated layer. The researchers in our laboratory have been involved in examining noncontact magnetic levitation control of the conveyance of a rectangular thin steel plate. We proposed hybrid electromagnetic levitation system which consists of electromagnets for levitation and horizontal positioning control and permanent magnets. In this study, the gap, number and optimal position of permanent magnets for suppressing the displacement of a magnetically levitated thin steel plate were investigated using thin steel plates by genetic algorithm. After that we examine effectiveness of optimal position of permanent magnets.
