The impact of acceleration and deceleration settings on the normal operation of stepper motors

Stepper motors are generally controlled by PLC, and the acceleration and deceleration of the controller are controlled by the slope method. The slopes of acceleration and deceleration are symmetrical. During use, you only need to set the acceleration and deceleration time to make the slope change. Most PLCs also have the function of segmented pulse frequency control, that is, the rotation speed is divided into acceleration, uniformity and deceleration, so that acceleration and deceleration can be asymmetric to meet the requirements of certain equipment.

The stepper motor is controlled by digital signals. If the pulse signal changes quickly, the magnetic response between the rotor and the stator of the stepper motor will follow the change of the electrical signal due to the damping effect of the internal counter electromotive force, which may cause the rotor to lock. On the other hand, the faster the angular acceleration is, the greater the load inertia must be overcome. If the torque is insufficient, the motor flow will be large, and acceleration and deceleration can solve this problem.

Currently, stepper motors are controlled by microcontrollers, which have the advantages of small size and low price. When the stepper motor starts, the pulse frequency gradually increases, and when the stepper motor decelerates, the pulse frequency gradually decreases. This is what we call "acceleration and deceleration". The motor has excellent performance and can effectively avoid clogging and out-of-step.

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