| 摘要 |
THE INVENTION PROVIDES APPARATUS AND METHOD FOR DRIVING A MOTOR WITH REDUCED CURRENT FLOWING IN THE MOTOR AS WELL AS REDUCED VIBRATIONS OF THE MOTOR AT A START-UP. THE MOTOR DRIVING APPARATUS COMPRISES A POSITION DETECTOR (17) FOR DETECTING A POSITION OF A ROTOR (12A) OF A BRUSHLESS DC MOTOR (12), A DC/AC CONVERTER (13) FOR CONVERTING A DC VOLTAGE DERIVED FROM A DC POWER SUPPLY INTO AN AC VOLTAGE, AND A CONTROLLER (19) FOR CONTROLLING THE DC/AC CONVERTER (13) TO CONTROL THE CONDUCTION OF A STATOR WINDING (12B) OF THE MOTOR. FOR A START-UP OF THE MOTOR, THE CONTROLLER (19) POSITIONS THE ROTOR (12A) BY SUPPLYING CURRENT TO A FIRST CONDUCTION PHASE OF THE STATOR WINDING (12B), AND THEN ONCE TURNS OFF THE CONDUCTION. AFTER THAT, THE CONTROLLER (19) CONTROLS THE DC/AC CONVERTER (13) TO ROTATE THE ROTOR BY SUPPLYING CURRENT TO A SECOND CONDUCTION PHASE OF THE STATOR WINDING (12B), AND TO START A POSITION DETECTING OPERATION AFTER A SPECIFIED TIME ELAPSES SINCE THE ROTOR (12A) STARTS ROTATION. |
