| 摘要 |
PURPOSE:To enable giving a braking force to a linear motor-driven carrier through a simple constitution by arranging a plurality of stators in a decelerating position of said carrier and by generating several types of braking force differing from each other between respective stators and a secondary conductor of said carrier. CONSTITUTION:First and second stators 8, 9 of a linear motor are adjacently arranged in a decelerating position of a carrier 2, and the first stator 8 is connected with an AC power 6 via a drive circuit 10 and the second stator 9, with said drive circuit 10 via a change-over switch 11. Also, two phases of the second stator 9 are connected with a DC power 7. If the carrier 2 approaches the first stator 8, said stator 8 is driven by the drive circuit 10 and a negative-phase braking force or regenerative braking force is generated between the stator 8 and a secondary conductor 3 of the carrier 2. If the carrier 2 approaches the second stator 9, the change-over switch 11 is opened and a DC voltage is applied to the second stator 9 to generate a DC braking force. |
