The working principle of AC stepper motor: AC stepper motor is a type of motor that utilizes electronic technology to control AC power, and its working principle is based on the principles of electromagnetic induction and reluctance rotation. The rotor of an AC stepper motor is composed of multiple magnetic poles, which are alternately excited by a single winding. When the winding is connected with current, a rotating magnetic field is generated in the motor. This rotating magnetic field generates magnetic resistance with the rotor poles, causing the motor to rotate at a fixed angle. As the excitation signal of the winding changes, the motor will continue to rotate at a certain angle to achieve precise positioning control. The application fields of AC stepper motors: 1. In the field of automated production lines: small AC motors are suitable for various nodes in automated production lines, such as conveyor belts, robotic arms, belt conveyors, etc. 2. Industrial automation field: small AC motors can be applied to various equipment in the field of industrial automation, such as machine tools (CNC stepper motors), winding machines, dyeing machines, etc. 3. Electronics: small AC motors can be applied in various human-computer interaction devices, such as 3D printers, holographic displays, and web automatic positioning controllers. 4. Medical equipment field: small AC motors are suitable for some precision medical equipment, such as CT machines, nuclear magnetic resonance machines, etc. Advantages: 1.The angle of motor rotation is proportional to the number of pulses. 2.When the motor stops rotating, it has the maximum torque. 3.Due to the accuracy of each step ranging from 3% to 5% and not accumulating errors from one step to the next, it has good positional accuracy and motion repeatability. 4.Excellent start stop and reverse response. 5.Due to the lack of brushes and high reliability, the lifespan of the motor only depends on the lifespan of the bearings. 6.The response of the motor is determined only by digital input pulses. Defects: 1.If not properly controlled, resonance may occur. 2.Difficulty in running to higher speeds. 3.Difficulty in obtaining large torque. 4.There is no advantage in terms of volume and weight, and the energy utilization rate is relatively low. 5.When exceeding the load, synchronization will be disrupted, and vibration and noise will be emitted during high-speed operation.