| 摘要 |
PURPOSE:To make it possible for a rotor to make a given rotary displacement and to be fixed with facility, by providing the rotor with a permanent magnet in a multipolar configuration and allowing winding impression voltage to make phase rotation by 90 deg. by DC excitation of a 2-phase winding of a driving motor. CONSTITUTION:The driving motor is composed of a rotor, which is provided with a bi-polar or quadruple-polar permanent magnet, and a stator, which has a slot in which 2-phase windings 3 and 4 are arranged. Exciting system of a driving circuit 1 is 2-phase excitation, and both the first phase winding 3 and the second phase winding 4 are so designed as to change polarity of impression voltage by combinations of operations of switches SW1-SW8. Switches SW1 and SW4 are closed to make DC excitation of the winding 3, and switches SW5 and SW8 are closed to make DC excitation of the winding 4, and then, when switches SW2 and SW3 are closed and switches SW5 and SW8 are also closed, the winding impression voltage makes phase rotation by 90 deg.. |
