| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to use a motor efficiently. SOLUTION: A temperature-detecting part TH detects the ambient temperature of a motor 40, while a temperature determining part 12 determines whether or not the detected temperature is lower than a preset reference temperature. If the detected temperature is lower than the reference temperature, a motor control selecting part 13 selects low speed as a driving speed for the motor 40, while high speed is selected as a driving speed for the motor 40, if it is equal to or higher than the reference temperature. Then, a motor driver part 14 drives the motor 4 at the selected driving speed. |
