| 摘要 |
PURPOSE:To ensure the smooth control of direction in a manual drive mode of an electromagnetic guiding truck by controlling the number of revolutions of right and left wheels respectively with the right-left control voltage that is set and delivered after the voltage difference is varied at a direction setting and delivering part. CONSTITUTION:In a manual drive mode a left turn is indicated for a steering mechanism 29 of a direction setting/delivering part 24. Then sliders 27 and 28 move to the left, and the input voltage to a left chopper control circuit 32 is lower than the input voltage V0 although the voltage V0 to a right chopper control circuit 33 has no change. Therefore the number of revolutions of a motor Ml for left driving wheel is decreased to produce a difference with the number of revolutions between both wheels. As a result, the electromagnetic guiding wheel is turned to the left. In this case, the left turn angle is decided by the difference of number of revolutions between left and right motors Ml and Mr. This difference of number of revolutions can be continuously varied by the left shift degrees of sliders 27 and 28 of the mechanism 29. So is with the movement of the right direction. In such a way, the direction is smoothly controlled for the electromagnetic guiding truck. |
