| 摘要 |
PURPOSE:To stably drive a motor not affected by the load variation or the irregularity of a motor in a simple construction by obtaining a signal proportional to the rotating angle of the motor by integrating counterelectromotive force. CONSTITUTION:The counterelectromotive force of a motor 4 is detected by a counterelectromotive force detector 6, the counterelectromotive force is integrated by an integrator 7 to obtain a signal proportional to the rotating angle of the motor 4. The output of the integrator 7 is inputted to a comparator 1, and the comparator 1 operates to cancel the error from a command signal. Thus, a signal proportional to the rotating angle of the motor can be readily obtained, and the motor is controlled so that the rotating angle of the motor is proportional to the amplitude of the input command signal. |
