What are the basic precautions in stepper motor applications?

Stepper motors are open-loop control elements that convert electrical pulse signals to angular or linear displacements. In the case of non-overloading, the speed of the motor, the position of the stop depends only on the frequency and number of pulses of the pulse signal, and is not affected by the load change, ie, a pulse signal is applied to the motor, and the motor rotates through a step angle. The existence of this linear relationship, plus the stepper motor only periodic errors without cumulative error and other characteristics. It is very easy to control with a stepper motor in the speed, position, and other control areas.

1. Stepper motors are used in low-speed applications-the speed per minute does not exceed 1000 rpm, and it is best to use between 150-450 RPM. This can be done by means of a deceleration device. In this case, the motor has high working efficiency and low noise.

2. The stepper motor does not use the full-step state, and the vibration in the full-step state is great.

3. due to historical reasons, only the nominal 12V voltage of the motor uses 12V, the voltage value of other motors is not the driving voltage, according to the driver to select the driving voltage (recommended: 42 motor DC 12V-24V, 57 motor DC 24-36V), of course, the voltage of 12 volts in addition to 12V constant voltage drive can also be used other drive power, but to consider the temperature rise.

4. The large-sized motor should be selected for the large inertial load.

5. When the motor is under high-speed or large inertia load, it is generally not started at the working speed, but it adopts gradual up-conversion speed-increasing, one motor is not out of step, and secondly, noise can be reduced and positioning accuracy of stopping can be improved at the same time.

6. When it is high-precision, it should be solved by mechanical deceleration, increasing motor speed, or using a high-division number of drivers.

7. the motor should not work in the vibration area, if necessary, can be solved by changing the voltage, current or adding some damping.

8. the motor works under 90RPM, should use a small current, large inductance, low voltage to drive.

9. should follow the principle of selecting the motor after the election drive.