誘導電動機で駆動される台車の停止位置制御 : 制動時検出法

概要

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It is the purpose that a wagon driven by a squirrel-cage induction motor is controlled to stop at the given position on a rail. The wagon is driven on the rail and arrives at the brake-start point. From this point, the motor should be braked corresponding to the load of the wagon. Therefore, the distance from brake-start point to the stop position must be constant. The brake of the 3 phase squirrel-cage induction motor is various method; dynamic braking, regenerative braking, plugging and single-phase braking etc. DC exciting method, so called dynamic braking, was used for this experiment. The peculiarity of this experiment is that the load was detected during the braking and braking current was decided. The method of this detection is as follows. At the first step, dynamic braking of which braking current is small was given on the motor from the brake-start point. In response to the ratio of speed down, the pulses were gained by phototransister which respond to light through the hole of disk installed on motor. The distance of pulse was converted into position stepping in the second dynamic braking of which braking current is large. This way was termed the second-step dynamic braking. By such a way, as the value of load increased, the braking quantity increased. Hence the difference of the given position and the stop position was small value in spite of the load variation.
山口大学の論文
1974-03-30