Question

What does stepper drive subdivision technology mean? What does stepper motor subdivision mean?

Answer 1

1. The subdivision technology of the stepper motor is essentially an electronic damping technology, the main purpose of which is to weaken or eliminate the low-frequency vibration of the stepper motor, and improving the running accuracy of the motor is only an incidental function of the subdivision technology. The actual step angle when the motor is running after subdivision is a fraction of the basic step angle.

2. The basic step angle of the two-phase stepper motor is 1.8°, that is, a pulse goes 1.8°, if there is no subdivision, it is 200 pulses to go a circle 360°, the subdivision is generated by the drive by accurately controlling the phase current of the motor, and has nothing to do with the motor.

3. If it is 10 subdivisions, it comes from a pulse motor to go 0.18 °, that is, 2000 pulses to go 360 °, whether the accuracy of the motor can reach or approach 0.18 °, but also depends on the subdivision current control accuracy of the subdivision driver and other factors.

Stepper motor subdivision drive technology

42 series stepping motor - NEMA 17 stepper motor with double shaft

Stepper motor subdivision drive technology is a drive control technology developed in the mid-seventies that can significantly improve the comprehensive performance of stepper motors.

It is by controlling the current in the windings of each phase to make them rise or fall according to a certain law, that is, a plurality of stable intermediate current states are formed between zero current and maximum current, and the direction of the corresponding synthetic magnetic field vector will also have a plurality of stable intermediate states, and rotate according to the subdivision step.

Among them, the amplitude of the synthetic magnetic field vector determines the size of the rotational torque of the stepper motor, and the direction of the synthetic magnetic field vector determines the size of the step angle after subdivision. The subdivision drive technology further improves the angle accuracy and running smoothness of the stepper motor.

Answer 2

What does the number of subdivisions on a stepper motor drive mean? What does it do? Is there with pulses?
Yes.

The stepper driver transmits the subdivision pulse to the stepper motor, in fact, the step angle becomes smaller in this process, for example, the stepper drive is in the subdivision state of 20, and the real step angle is only one-twentieth.

It can solve the vibration of the stepper motor at low speed: this problem can be solved well by subdividing the stepper drive, so that the vibration that the stepper motor will not have at low speed can also be solved well in the resonance zone.

Answer 3

Notes:

The supply voltage should be appropriate, the +/- polarity of the DC input must not be wrong, and the current setting value of the drive controller should be appropriate.

The control signal line is firmly connected, and the shielding problem should be considered in industrial environments.

Do not connect all the wires at the beginning, you can connect the most basic system first, confirm that it is working well, and then complete all the connections.

The ground and floating terminals must be confirmed in advance.

At the beginning of operation, carefully observe the sound and temperature rise of the motor, and stop and adjust immediately if it is found to be abnormal.