| 摘要 |
PURPOSE:To obtain an accurate stopping angle position of a rotor by connecting a resistor with one side winding group when exciting in two phases, thereby applying a displacement to the stopping position of the rotor. CONSTITUTION:A resistor 16 for limiting a current, for example, to approx. 3-20% is connected between the second phase and fourth phase windings B, D and a power source terminal 13. Thus, when exciting in the 2 phases, one voltage of two phase windings to be simultaneously excited becomes lower than the other voltage, and a difference occurs in the exciting currents. Thus, a deviated magnetic flux distribution occurs, and the stopping position of a rotor becomes displayed state. Even if the rotating direction of the rotor is different, the displacement of the stopping position becomes extremely small. |
