Stepper motor is an open-loop control element which Converts Electric Pulse Signal Into Angular or linear displacement. In the case of no overload, the speed and stop position of the motor only depend on the frequency and number of pulse signal, but not affected by the load change, that is, add a pulse signal to the motor, the motor turns a step angle. This linear relationship exists, plus the stepper motor only periodic error and no cumulative error and so on. Make in the speed, position and other control areas with stepper motor to control become very simple. Although stepper motor has been widely used, but stepper motor can not be like ordinary DC motor, AC motor in the conventional use. It must be made up of double loop pulse signal, power drive circuit and so on. Therefore, it is not easy to use a good stepper motor, which involves mechanical, electrical, electronic and computer expertise. Today, the production of stepper motor manufacturers is indeed many, but with professional and technical personnel, can develop their own, the development of manufacturers is very few, most manufacturers only one or 20 people, even the most basic equipment is not. It's just a kind of blind imitation. This gives the customer in the product selection, the use of a lot of trouble. In view of the above, we have decided to take a wide range of induction sub-stepping motor as an example. Describe its basic working principle. Hope to be able to the majority of users in the selection, use, and improve the whole machine when helpful.
