Principle stepper motor driver

1, the stepper motor is a special motor used as a control, it is a fixed angle of rotation (referred to as "step angle") running step, which is characterized not accumulated error (accuracy of 100%), it is widely used in various open-loop control. Stepper motor operation for driving an electronic device must be such that the stepper Voltage stabilizer, which is the control system sends a pulse signal into the angular displacement of the stepper motor, or: The control system send a pulse air circuit breaker, through the driver causes the rotation of the stepper motor step angle. Therefore, the stepper motor speed is proportional to the frequency of the pulse signal. Therefore, the frequency of the control pulse signal, the motor can be accurately governor; controlled mcb circuit breaker of pulses, the motor can be precise positioning purposes;
2, stepper motor driven drive by subdividing its smaller step angle, such as the driver operates in 10 segments state, the step angle only for the 'intrinsic motor step angle' of the tenth, but also say: 'when the drive operates in full-step breakdown of the state, the control system each made a step pulse, motor rotation 1.8 °; while working with sub-drive breakdown in 10 states, the motor just turned 0.18 ° ', which is the breakdown of the basic concept. Feature is completely broken by the precisely controlled by the drive current generated by the motor phase, the motor has nothing to do.