Today, automation control systems are widely used and developed in various industries, and DC drive control, as the main direction of power transmission, plays an important role in modern production. For a long time, DC motors have dominated the field of transmission because of their flexible speed adjustment, simple method, easy stepless speed adjustment over a wide range, and good control performance. It is widely used in manufacturing automation equipment such as CNC machines and industrial robots. With the continuous expansion of the scale of modern production, the demand for DC motors in various industries is increasing, and higher requirements are put forward on its characteristics.