The machine is divided into two kinds, not servo motor is the step motor, the servo is better, but the price is higher, choosing the right step to the motor according to the precision can save the cost.
The step motor is an open loop controlling element which converts the electrical pulse signal into angular displacement or line displacement. In the case of the overload, motor speed, stop position depends only on the pulse signal frequency and pulse number, and not affected by load change, when the stepper driver receives a pulse signal, it is driving a stepper motor according to set the direction of a fixed Angle, known as the "step Angle", its rotation is based on the Angle of the fixed step by step. It can control the amount of angular displacement by controlling the number of pulses, so as to achieve accurate positioning. At the same time, the speed and acceleration of the motor can be controlled by controlling the pulse frequency to achieve the goal of speed adjustment.
Stepper motor is a kind of can in open loop control condition, achieve precise position control of the motor, has the characteristics of high cost performance, and is mainly used in low speed high torque in the situation. But it requires a professional drive controller to run, control mode, such as resai M542, and full digital control, such as innast EZM552.
