| 摘要 |
A controller apparatus determiners the rotational speed of a motor in accordance with a control signal supplied from an external device, switches the excitation scheme in accordance with the rotational speed, changes the peak current of the driving current to be supplied to the motor every time in accordance with the rotational speed, and controls the motor in accordance with the excitation scheme and peak current, thereby realizing optimum motor control according to the rotational speed in a wide range of rotational speed. When an object is sensed by a camera unit installed in a driving apparatus operated by the control method, a high-quality image sensing signal can be obtained.
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