What is the difference between the stepper motor and the servo motor?
Step by step with encoder just have one more position compensation link, accuracy will be a little higher, but the moment ring cannot be compensated, so can't completely accurate positioning, with servo is not a class, also won't become rice is like a barnyard grass farewell
This is not likely to be similar to the servo performance, choosing servo is mainly the high accuracy and the constant torque output is better than the step motor. This gap is mainly determined by the physical structure of servo and stepper, although stepper positioning accuracy will be improved after adding the encoder, but recommend suite stepper motor torque output and high speed down very fast problem still cannot be solved, servo when in rated 3000 turn, for instance can still maintain its rated torque output, step might be to 1500 turn when the moment is only he remained one of the three points of the torque. So the step plus encoder has limited performance improvements, mostly just a publicity stunt.
Stepper motor with encoder just raised some performance, high precision positioning is raised, moment didn't get promoted, basic can be ignored, and so will be lost. The servo motor must have a coder, and if a servo motor has no coder, it cannot be a servo motor. In high precision control, the servo motor can be accurately positioned, and it is not possible to step forward. 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 point of view, called "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.
