1. Stator: The stator is the static part of the stepper motor, usually composed of a set of electromagnetic coils. These coils are fixed to the outside of the motor to form a structure surrounding the rotor.
2. Rotor: The rotor is the rotating part of the stepper motor, usually made of magnetic material. There is a set of permanent magnets inside the rotor, which interacts with the electromagnetic coils of the stator through the electromagnetic field to achieve rotation.
3. Stepper Driver Circuit: Stepper motors require a special driver circuit to control their rotation. The stepper driver circuit controls the energization sequence and timing of the stator coils according to the input pulse signal, so that the motor rotates according to the predetermined step angle.
4. Encoder: Some advanced stepper motors are equipped with encoders to detect the position and rotation angle of the motor. The encoder can provide feedback signals to help the control system accurately control the position and speed of the motor.
5. Mechanical structure: Stepper motors are usually used in conjunction with mechanical devices, such as transmissions, guides, etc. The mechanical structure can convert the motor's rotational motion into useful mechanical work, such as linear motion or rotational motion.
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