步进电机是将电脉冲信号转变为角位移或线位移的开环控制元件。在非超载的情况下，电机的转速、

停止的位置只取决于脉冲信号的频率和脉冲数，而不受负载变化的影响，即给电机加一个脉冲信号，电机

则转过一个步距角。这一线性关系的存在，加上步进电机只有周期性的误差而无累积误差等特点。使得在

速度、位置等控制领域用步进电机来控制变的非常的简单。为此， 51测试网在腾龙开发套件中首次引入

了步进电机技术，方便用户应用掌握。-Stepper motor is the electrical pulse signal into an angular displacement or linear displacement of the open-loop control components. In the case of non-overloaded, the motor speed, and stop depending on the location of only the frequency of pulses and pulse a few, and not subject to the impact of changes in load, that is, to add an electrical pulse signal, a step motor is turned angle. The existence of this linear relationship, together with the stepper motor without error only cyclical characteristics of the accumulated error. Made in terms of speed, position control, such as stepper motor to control the use of very simple changes. To this end, the 51 test network development kit Tenglong first introduced the stepper motor technology, applications and user-friendly hands.