Stepper motors can be divided into open - loop stepper motors and closed - loop stepper motors. So the question is, what is the difference between an open-loop stepper motor and a NEMA17 closed loop stepper motor?

Open ring stepper motor can be commonly understood as the previous to send a flat letter, the content of the other party to execute. No feedback.The closed-loop stepper motor is the equivalent of sending a registered letter, which needs to be executed and reported to you. Give feedback.That is to say, the fundamental difference between the open-loop stepper motor and the NEMA17 closed loop stepper motor is whether it can feedback the state signal of the current operation.

The open-loop stepper motor has no feedback signal and only executes sequentially. On the contrary, NEMA17 closed loop stepper motor feedback signal, according to the signal stepper motor driver to take the corresponding action measures or signal feedback to PLC, by PLC to determine the next step of the program.

Sometimes, some people call a closed-loop stepper motor a hybrid servo motor. Next, analyze the advantages of closed-loop stepper motor.

Advantages of NEMA17 closed loop stepper motor one, the closed-loop control improves the torque-frequency characteristics. The second advantage of the NEMA17 closed loop stepper motor is that the output power/torque curve is improved under closed-loop control, and the current value is determined by the motor load, so that the current can be fully converted into torque even at low speeds. The advantages of closed-loop stepper motor two, using closed-loop control, the stepper motor can automatically and effectively be accelerated and decelerated. So the question is, what is the difference between an open-loop stepper motor and a closed-loop stepper motor?

Open ring stepper motor can be commonly understood as the previous to send a flat letter, the content of the other party to execute. No feedback. The NEMA17 closed loop stepper motor is the equivalent of sending a registered letter, which needs to be executed and reported to you. Give feedback.