Stepper motor in the following cases using reducer (1)Stepper motor stator phase current switching frequency, such as changes the input pulse of the stepper motor drive circuit, make it become a pain at low speed. Stepper motor at low speed when waiting for step by step instructions, the rotor in a stop state, when low speed step by step, will speed fluctuation is very big, at this point as to high speed running, can firmly speed fluctuation problem, but the torque is insufficient. Will the low speed torque ripple and high speed and torque. (2)Small (Below 50 mm)Step type PM stepping motor is apart from the Angle of 7. 5°, such opportunity arises changes in the position control accuracy. (3)Stepper motor output shaft with the method of direct driving load, when the load Liang Dashi, accelerating torque is insufficient phenomenon. (4)Hope big brake torque at low speed.
