| 摘要 |
PURPOSE:To improve maintainability by rotating a member from a first angle position to the second angle position by the changeover of excitation from phase A to phase B, and, when the rotation ends, by stopping the excitation of the phase B, and exciting phase -A, and giving the member specified torque in the second angle position. CONSTITUTION:When the phase A 9 of a stepping motor is excited, the member is in a first angle position, and when the excitation is exchanged from the phase A9 to phase B10, the member rotates to a second angle position and mechanically stops. At this time, specified torque works on the member and the member is pressed into the second angle position, by stopping the excitation of the phase B 10 and exciting phase -A. If the excitation of the phase -A stops, and the phase A 9 is excited, the member returns to the first angle position. Hereby, an actuator and a driving circuit can be simplified, and excellent maintainability can be obtained. |
