The principle of self closing and self-locking of stepping motor
Stepper motor drive circuit is generally brake (or axle), the principle is: when you need to stop, the last step pulse, the drive circuit to output a constant current to the motor holding shaft and the shaft brake lock. This brake current is a factor in the heating of the stepper motor, so the stepper driver generally uses a half flow or less than half of the braking current (for normal drive current).
Electric motor, brake or power, brake device from the output shaft of the stepping motor, the normal operation of the motor, when power-off, hold the motor shaft brake release
Ordinary stepper motor power without self-locking, electricity will lock, to achieve self-locking, the stepper motor is installed in the tail of a brake device (brake), and in parallel with the circuit of the stepping device on
