Study on Bended Magnetic Levitation Control Device for Ultra-Thin Steel Plate

在薄钢板生产线的运输系统中，由于板材经常与滚筒接触，存在着板材表面质量随时间推移而恶化的问题。为了解决这一问题，人们开展了电磁悬浮技术的研究。然而，当以厚度小于0.3 mm的柔性薄钢板为悬浮目标时，由于薄板挠曲度增加，使悬浮控制变得困难。我们建议将一块弯曲到不会引起塑性变形的柔性薄钢板悬浮起来。在本研究中，我们使用滑模控制来研究薄钢板的悬浮性能。将所得结果与最优控制结果进行了比较。验证了滑模控制对扰动的抑制效果是充分的。

In the transport system of a thin-steel-plate production line, there is a problem that the quality of the plate surface deteriorates over time because the plate is usually in contact with rollers. To solve this problem, studies of electromagnetic levitation technology have been carried out. However, when a flexible thin steel plate with a thickness of less than 0.3 mm is targeted for levitation, levitation control becomes difficult because the thin plate undergoes increased flexure. We propose the levitation of a flexible thin steel plate that is bent to an extent that does not induce plastic deformation. In this study, we examine the levitation performance of a thin steel plate using sliding mode control. The obtained results were compared with the optimal control results. As a result, it was verified that the suppressive effect of the sliding mode control on disturbance is sufficient.