| 摘要 |
PURPOSE:To reduce the vibration by alternately repeating exciting phases in forward and reverse directions several time to excite, and exciting the next exciting phase when a rotor approaches the stable point, thereby reducing the displacing the rotor toward the target position. CONSTITUTION:A step pulse of the prescribed frequency applied to a terminal 5 is detected by a step pulse detector 6 of a controller 1, and a reverse phase rota- tion control unit 7 sets a reverse phase exciting number per one step pulse. Then, a data control unit 8 inputs the leading address of the exciting data corresponding to the forward and reverse exciting times, the prescribed exciting data stored in a memory 9 is produced, and inputted to a forward exciter 10 and a reverse exciter 11. When the exciting phase is switched, the switched phase is alternately and repeatedly excited to apply torque in forward and reverse directions. |
