Basic study on edge supported electromagnetic levitation system for flexible steel plate

2019 ◽  
Vol 59 (3) ◽  
pp. 985-992
Author(s):  
Yoshiho Oda ◽  
Masahiro Kida ◽  
Toshiki Suzuki ◽  
Takayoshi Narita ◽  
Hideaki Kato ◽  
...  
Keyword(s):  
Steel Plate ◽  
Electromagnetic Levitation ◽  
Basic Study ◽  
Levitation System

Basic study on effect of transport acceleration in electromagnetic levitation system for thin steel plate

2020 ◽  
Vol 64 (1-4) ◽  
pp. 597-605
Author(s):  
Yasuaki Ito ◽  
Yoshiho Oda ◽  
Taro Kato ◽  
Xiaojun Liu ◽  
Ayato Endo ◽  
...  
Keyword(s):  
Steel Plate ◽  
Electromagnetic Levitation ◽  
Steel Plates ◽  
Horizontal Direction ◽  
Basic Study ◽  
Electromagnetic Actuators ◽  
Positioning Control ◽  
Levitation System ◽  
Thin Steel ◽  
Thin Steel Plate

Thin steel plates are widely used in various industrial products. However, because of the deterioration of surface quality and metal plating that occurs during transport, some problems exist. As a solution to these problems, a noncontact transport of steel plate using electromagnetic force has been proposed. However, side slip or the dropping of the plate may occur. Therefore, we proposed the addition of electromagnetic actuators to control the horizontal motion of levitated steel plates. In this study, we examined the change in the levitation stability during noncontact transport with the addition of positioning control in the horizontal direction or changed transport conditions. As a result, the application of a magnetic field in the horizontal direction improved the levitation stability of transported thin steel plates in different transport conditions.

A basic study on levitation characteristics of metal foil by edge-supported electromagnetic levitation system

2020 ◽  
Vol 64 (1-4) ◽  
pp. 1191-1198
Author(s):  
Takayoshi Narita ◽  
Yoshiho Oda ◽  
Yasuaki Ito ◽  
Hideaki Kato
Keyword(s):  
Frictional Force ◽  
Electromagnetic Force ◽  
Steel Plate ◽  
Flexural Rigidity ◽  
Vertical Direction ◽  
Electromagnetic Levitation ◽  
Steel Plates ◽  
Metal Foil ◽  
Basic Study ◽  
Levitation System

The grasping and conveying of an object by utilizing the frictional force generated by contact are performed during various steps in the process of manufacturing industrial products. Deterioration of the surface quality due to these contacts is a problem. A noncontact way to transport steel plates using electromagnetic force has been proposed as a solution to these problems. In such applications to date, electromagnets are installed in the vertical direction. However, if the steel plate is thin and lacks sufficient flexural rigidity, it is difficult to exert enough suspension force to levitate the entire steel plate. To solve this problem, we propose an edge-supported electromagnetic levitation system suitable for flexible steel plates using electromagnets installed in the horizontal direction. In this paper, we report on levitation experiments to verify the effectiveness of the proposed system and discuss characteristics of the horizontal positioning of electromagnets and levitation suspension.

Optimal Placement of Permanent Magnet in Electromagnetic levitation System for Thin Steel Plate

2021 ◽  
Vol 2021.27 (0) ◽  
pp. 11F03
Author(s):  
Atsuki SHIINA ◽  
M. N. N. ◽  
Kazuki OGAWA ◽  
Takayoshi NARITA ◽  
Hideaki KATO
Keyword(s):  
Permanent Magnet ◽  
Steel Plate ◽  
Electromagnetic Levitation ◽  
Optimal Placement ◽  
Levitation System ◽  
Thin Steel ◽  
Thin Steel Plate

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

2018 ◽  
Vol 2018 (0) ◽  
pp. YC2018-071
Author(s):  
Yasuaki ITO ◽  
Yoshiho ODA ◽  
Kengo OKUNO ◽  
Takayoshi NARITA ◽  
Hideaki KATO
Keyword(s):  
Permanent Magnet ◽  
Steel Plate ◽  
Electromagnetic Levitation ◽  
Levitation System ◽  
Thin Steel ◽  
Thin Steel Plate

scholarly journals Electromagnetic Levitation Control for Bending Flexible Steel Plate: Experimental Consideration on Disturbance Cancellation Control

Actuators ◽  
2018 ◽  
Vol 7 (3) ◽  
pp. 43 ◽  
Author(s):  
Kazuki Ogawa ◽  
Makoto Tada ◽  
Takayoshi Narita ◽  
Hideaki Kato
Keyword(s):  
Plastic Deformation ◽  
Steel Plate ◽  
External Disturbance ◽  
Electromagnetic Levitation ◽  
Bending Angle ◽  
Levitation Performance ◽  
Levitation System ◽  
Disturbance Cancellation

When an ultrathin and flexible steel plate is to be levitated, levitation control becomes difficult because the ultrathin steel plate undergoes increased flexure. We herein propose a levitation method for an ultrathin steel plate that is bent to an extent that does not induce plastic deformation. In this study, to investigate the levitation stability of an ultrathin steel plate, we applied disturbance cancellation control in the bending levitation system. The object of electromagnetic levitation was a rectangular zinc-coated ultrathin steel plate (SS400) of length 800 mm, 600 mm, and thickness 0.19 mm. The vibrator was attached below the three frames, in which the electromagnet unit was installed so that the frames could be vibrated up and down. We conducted experiments on the levitation performance when the electromagnet was displaced by the frame vibration in the bending levitation system. The results showed that a stable levitation can be achieved even with an input of external disturbance when levitating at the optimum bending angle.

scholarly journals Effect of Optimal Placement of Permanent Magnets on the Electromagnetic Force in the Horizontal Direction

Actuators ◽  
2018 ◽  
Vol 7 (3) ◽  
pp. 54
Author(s):  
Yasuaki Ito ◽  
Yoshiho Oda ◽  
Takayoshi Narita ◽  
Hideaki Kato
Keyword(s):  
Permanent Magnets ◽  
Steel Plate ◽  
Electromagnetic Levitation ◽  
Steel Plates ◽  
Horizontal Direction ◽  
Optimal Placement ◽  
Positioning Control ◽  
Levitation System ◽  
The Magnetic Field

The surface quality of steel plates is deteriorated as they contact rollers while being conveyed during manufacturing processes. To solve this problem, we previously proposed a hybrid electromagnetic levitation system comprising electromagnets, permanent magnets, and a horizontal positioning control system for steel plates. Moreover, to increase stability, we proposed integrating these levitation systems. In this study, we aim to determine the optimal placement of permanent magnets in the levitation system to suppress the deflection of a levitated steel plate for cases where the magnetic field in the horizontal direction changes. Using a genetic algorithm, the optimal gap, number, and placement of permanent magnets in the system are obtained.

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