| 摘要 |
PROBLEM TO BE SOLVED: To provide a control device that performs accurate advance control on a stepping motor at an arbitrary speed on the basis of information on correspondence between an advance and a driving speed within a predetermined range of the driving speed.SOLUTION: A control device 100 is configured to generate a detection signal of a rotational position of a rotor of a stepping motor 101 and control a rotational speed of the stepping motor 101 at a timing matching the detection signal. The control device 100 calculates an advance value of a control waveform depending on a specified rotational speed as a desired advance on the basis of information on correspondence between an advance and a rotational speed of the rotor in a predetermined range of the rotational speed stored in storage means, and controls the advance of the control waveform to the desired advance. The control device 100 further detects the rotational speed of the rotor at the generation period of the detection signal of the rotational position, and controls a driving voltage to the stepping motor 101 such that a speed deviation between the specified rotational speed and the detected rotational speed enters a threshold range on the basis of the correspondence information in the storage means. |
