DC servo motors can be used in spark machines, manipulators, precision machines, etc. It can be equipped with a standard encoder and a speed tester with high analysis of 2500P/R at the same time, and can be equipped with a reducer, so that the mechanical equipment can bring reliable accuracy and high torque. The speed regulation is good, and the output power per unit weight and volume is the highest, which is greater than that of AC motors and far more than stepper motors. The moment fluctuations of the multi-level structure are small.