| 摘要 |
<p>A control device has a motor and an electromagnetic brake which are electrically connected to each other and outputs a driving voltage to the motor and the electromagnetic brake. The control device comprises a PWM signal output means for outputting a PWM signal of duty ratio based on a set voltage which is set with respect to the electromagnetic brake in advance, and an electromagnetic brake driving means which receives part of a direct-current (DC) voltage used for driving the motor, converts the part of the DC voltage into a DC voltage in proportion to the duty ratio of the PWM signal outputted from the PWM signal output means, and outputs the converted DC voltage to the electromagnetic brake.</p> |
