| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem associated with a motor driving device which carries out square wave driving by an inverter circuit and a rotor position detecting means, that, when transistors are controlled by a commutation signal from the rotor position detecting means to switch phases, transistors in two phases are simultaneously brought into conduction and malfunction is caused by dV/dt noise. <P>SOLUTION: Direct-current power from a direct-current power supply 1 is converted into alternating-current power through the inverter circuit 2, and the alternating-current power is applied to a motor 3. When phases of the motor 3 are switched by a power switching means, an idle period is prepared by a control means 5 according to a position signal from the rotor position detecting means 4. <P>COPYRIGHT: (C)2004,JPO |
