| 摘要 |
PURPOSE:To accurately decelerate and stop a linear motor type conveying truck. CONSTITUTION:A linear motor-driven air-cushioned or magnetic levitation type conveyor has a levitation type conveying truck W having a secondary conductor LP, a traveling passage in which linear motor stators LA, LB are arranged in the vicinity before and after a stopping point O, a position detecting sensor of the truck, and a linear motor stator excitation controller, and comprises laser type displacement sensors S1, S2 which can directly measure moving distances of the conductors to detect a position to control the deceleration and stop of the truck. Accordingly, since the laser type sensor can steplessly and continuously measure a moved distance and a moving direction of a matter to be measured on a flat surface, it can accurately control to stop the truck by the stator. |
