Stepper motor at low speed to increase torque method 1)Choose step torque Angle smaller stepper motor at low speed when the larger with the increase of rotor teeth. Choose small step torque Angle stepper motor can obtain high torque. Actually utilized the rotor teeth like 50 tooth, permanent magnet magnetic flux leakage will increase, but not in proportion, this conclusion in 100 teeth of the following are valid. From 1 type three-phase HB stepping motor. 2 c 50 tooth rotor to 0. About 1 6 degrees. 4 to 1. Eight times torque at low speed. 2)Bipolar connection 2 times can improve efficiency. It is easy to buy on the market two phase unipolar or bipolar stepper motor, but the driver of the bipolar power tube is larger than that of unipolar.
