| 摘要 |
PROBLEM TO BE SOLVED: To provide a movable body system capable of recognizing the position even in the interval of a curve with few affection of noise from the feeder. SOLUTION: The detection plate 14 to be detected keeps the permanent magnets 48 to 50 arranged in the running direction on the rail side. The overhead travelling truck keeps the coils 54 arranged in a running direction. The linear sensor 12 provided with the optical sensors 51 to 53 is made to oppose to the detection plate 14 in vertical direction. The optical sensors 51 to 53 discriminate between the linear interval and the curved interval, for changing the effective range of the linear sensor. COPYRIGHT: (C)2007,JPO&INPIT
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