BRAKING DEVICE FOR DC MOTOR

摘要

A braking device of a DC motor (21) has a position detecting means (41) to detect a position of a motor shaft (29), a rotational speed detecting means to detect a rotational speed of the motor and a braking means (74) to generate a braking force based on a position signal and a speed signal detected by both of the means, and stops the motor shaft (29) quickly and smoothly without making the motor shaft collide with a stopper.