| 摘要 |
PURPOSE:To increase the responding speed as well as to prevent the hunting generated at the time when the motor stops or runs at a slow speed by a method wherein the sine wave signal for a deviation angle (y-x) is calculated by the sine wave signal for a command angle y and the sine wave signal and a cosine wave signal for a rotatory angle x. CONSTITUTION:A positional signal generating device 3 outputs the sine wave signal sinx and the cosine wave signal corresponding to the rotational angle x from the reference position of a driving shaft 2. A command signal generating device 5 outputs the sine wave signal siny and the cosine wave signal cosy corresponding to a command rotation angle y. An arithmetic operational circuit 9 calculates the sine wave signal sin (y-x) corresponding to an angular deviation (y-x) and gives it, as a feedback voltage VF, to driver circuit 10 of the DC motor. Through these procedures, a large torque is obtained, a hunting at the time when the motor is stopped or operated at a low speed is prevented and the speed of response can be increased. |
