Electric motors play an important role in production and daily life, especially in electric motors. According to statistics, electric motors consume over 60% of the electricity consumption. However, due to the frequent exposure of electric motors to harsh environments such as high temperature, high pressure, toxic, harmful, corrosive, humid, and dusty conditions, they are prone to malfunctions, which in turn affect the normal operation and safety of production equipment.

There are various types of motors, which can be divided into AC motors and DC motors according to the different forms of electrical energy. AC motors can be divided into single-phase AC motors and three-phase AC motors. In addition, motors can also be divided into synchronous motors and asynchronous motors based on different slip rates.