The driver samples similar to the servo control principle, unique circuit design, superior software algorithm processing, so that the motor can run smoothly even under low subdivision, almost no vibration and noise, smooth and accurate current control technology greatly reduces the motor heat, external 16 speed equal Angle constant torque subdivision, up to adjustable subdivision 51200 pulse/revolution, Optical coupling isolation differential signal input, strong anti-interference ability, with overvoltage, undervoltage, overcurrent protection and other error protection functions. In the terminal machine, laser engraving and other medium and low speed applications, its stability, vibration, noise performance advantages are obvious, can greatly improve the performance of the equipment.