| 摘要 |
PURPOSE:To smoothly accelerate or decelerate a motor and to control the motor at a constant speed by reducing the reduction rate of a motor drive signal when the driving amount of the motor enters the prescribed driving amount range. CONSTITUTION:A microcomputer 1 outputs an instruction pulse CP which contains the total rotation amount of a DC motor 2 and speed information and potentiodata P0, -P0 which indicate the driving mount range for reducing the reduction rate of the drive signal of the motor 2. A deviation counter 3 produces a deviation amount DS between the number of pulses of the pulse signal CP and the number of pulses of a feedback signal FP from a pulse generator 5. When the rotating amount of the motor 2 enters the preset rotating amount range, only an analog switch 10 closes, and the reduction rate of the reference input of a servo amplifier 12 decreases. Accordingly, even if the rotating amount of the motor 2 approaches the target value, necessary torque can be obtained. |
