| 摘要 |
PROBLEM TO BE SOLVED: To provide a control device configured to perform advance control on a stepping motor and speed control by driving voltage control as well which implements high accuracy speed control even on a stepping motor with characteristic variations.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 controls an advance value of a control waveform depending on a specified rotational speed as a desired advance. The control device 100 detects a rotational speed of the rotor, 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. If the driving voltage control cannot control the speed deviation into the threshold range, the control device 100 corrects the desired advance by a correction value depending on the speed deviation. |
