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    Tag: stepper motor driver

    How to prevent stepper motor losing step?

    Stepper motor is an open-loop control motor which transforms electric pulse signal into angular displacement or linear displacement.  However, there are some errors occuring between the actual angle stepper motor rotates and the theoretical step distance. There are some certain errors from one step to any other step, but the step number of each cycle of the stepper motor is the same. In the case of no step loss, the step error is not accumulated for a long time.
    How to prevent step loss with stepper motor as the above mentioned? First of all, we need to know why stepper motor losses step?

    1. The rotor acceleration is slower than the rotating magnetic field of the stepper motor.
    2. The average speed of the rotor is higher than the average rotating speed of the stator magnetic field.
    3. The load inertia of stepper motor is large.
    4. The stepper motor produces the resonance.