| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve conveying efficiency of a track cart by reducing stops for switching a branch roller. <P>SOLUTION: When a ceiling traveling vehicle 20 travels from a start point 60 to a destination point 62, it is required to switch a branch roller at a branch part 46. A switchable section of the branch roller with a longest required time is found in a range upstream from the branch part 46 to a branch part 44 branchable in an upstream direction, so as to switch the branch roller. There is no need for a stop for switching the branch roller. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
