| 摘要 |
PROBLEM TO BE SOLVED: To suppress resonant oscillation occurring to a motor at a particular rotation speed.SOLUTION: A motor controller 100 controls electric conduction to a motor 110 in which a plurality of coils U1-W2 giving torque to a rotor are arranged circularly. The motor controller 100 comprises a rotation speed detection sensor 120 for detecting rotation speed of the motor 100 and an electric conduction control unit 130 for controlling electric conduction to the plurality of coils U1-W2 by using the detected rotation speed. The electric conduction control unit 130 applies electricity to the plurality of coils U1-W2 sequentially by all electric conduction patterns if the detected rotation speed is out of a predetermined condition, and on the other hand, applies electricity to the plurality of coils U1-W2 sequentially by remaining electric conduction patterns (for example, U phase → V phase, V phase → W phase, V phase → U phase, W phase → U phase, and W phase → V phase) excluding a part of the conduction patterns (for example, U phase → W phase) from all electric conduction patterns if the detected rotation speed is within the predetermined condition. |
