| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a motor control device and a control method capable of preventing discontinuous change of output torque and stably selecting a proper lead angle. <P>SOLUTION: A stepping motor includes a rotor 3, a first sensor 6a, a second sensor 6b, and a controller 12. The controller 12 changes a lead angle to 30°(a second lead angle) when the number of revolutions of the rotor 3 is equal to or larger than a first high-speed side threshold, and changes the lead angle to 0°(a first lead angle) when the number of revolutions of the rotor 3 is equal to or smaller than a first low-speed side threshold. The controller 12 changes the lead angle to 50°(a third lead angle) when the number of revolutions of the rotor 3 is equal to or larger than a second high-speed side threshold, and changes the lead angle to 30°(the second lead angle) when the number of revolutions of the rotor 3 is equal to or smaller than a second low-speed side threshold. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
