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WebFeb 1, 2024 · The motor used by the steel strip rolling device is a bru shless DC motor, ... on the system mathematical model and the LQR (linear quadratic ... of the overhead hoist transport ... WebAug 13, 2013 · The present invention relates to an overhead hoist conveying device, and more particularly, to an overhead hoist conveying device for cleaning foreign substances such as dust on a rail. Overhead hoist transfer (OHT) is used to efficiently transport wafers, panels, and materials in semiconductor and display processes that produce … WebIn 300 mm semiconductor factories, overhead transport (OHT) systems used for safe and fast transportation of wafers. These systems consist of a rail network and OHT vehicles. … intrinsic high school