| 摘要 |
<p>PURPOSE:To maintain the speed of a truck constant by driving the truck by a linear motor, and providing a plurality of auxiliary stators on a traveling road to set them in a conductive state in response to a deviation between the measured value of the speed of the truck and a set value. CONSTITUTION:If the main stators 9 of a linear motor of necessary number for traveling a truck 3 provided at a suitable position of a traveling road 8 are conducted when the stators 9 are opposed to a movable element of the motor provided through a bracket on the lower face of the truck 3, a thrust is generated in the element 11 so that the truck 3 moves. A predetermined number of auxiliary stators 20 are disposed at positions to be opposed to the movable element provided in the truck 3 of the road 8, and a predetermined number of the stators 20 are electrified according to a deviation between the measured value of the speed of the truck 3 and a set value. Thus, since the insufficient thrust is supplemented, a constant speed of the truck can be maintained.</p> |
