JESSICA部落格

1.Definition of hybrid stepper motor

Hybrid stepper motor is a stepper motor designed by combining the advantages of permanent magnet and reactive stepper motors. It combines the high torque of permanent magnet stepper motor and the high precision of reactive stepper motor, and realizes the complementary advantages of the two through specific structural design. Hybrid stepper motors can be divided into two-phase, three-phase and five-phase according to the number of phases. Among them, the two-phase step angle is generally 1.8 degrees, the three-phase step angle is generally 1.2 degrees, and the five-phase step angle can reach 0.72 degrees, showing a higher step angle resolution.

2.Characteristics of hybrid stepper motors
High precision: Hybrid stepper motors have a higher step angle resolution and can achieve higher positioning accuracy. Its two-phase, three-phase and five-phase design makes the step angle more refined, meeting the needs of high-precision control.
High torque: The rotor of the hybrid stepper motor itself is magnetic, so the torque generated under the same stator current is greater than that of the reactive stepper motor. This enables hybrid stepper motors to drive larger loads and meet the needs of various application scenarios.
High reliability: The hybrid stepper motor has a simple structure and no wearing parts such as brushes and commutators, so it has a long life. At the same time, the vibration and noise generated during its operation are small, which further improves its reliability.
Stable speed regulation: The operating speed of the hybrid stepper motor can be adjusted by the pulse signal frequency in the control circuit to achieve precise speed regulation requirements. This makes the hybrid stepper motor perform well in application scenarios that require precise speed control.
Complex structure: Although the hybrid stepper motor has many advantages, its structure is relatively complex, especially the design of the hybrid rotor increases the difficulty and cost of manufacturing. In addition, due to the large rotor inertia, its speed is lower than that of the reactive stepper motor.

3.Working principle of hybrid stepper motor

The working principle of the hybrid stepper motor is based on its unique structural design. Its stator and rotor are divided into two sections, and small teeth are distributed on the pole surface. The two sections of the stator are not misaligned, and windings are arranged on them. The two tooth slots of the rotor are staggered by half a tooth pitch and connected in the middle by a ring permanent magnet. When the winding is energized in a specific power-on sequence (such as A-B-A-B-A or A-B-A-B-A), the stepper motor can achieve continuous rotation.

4.Application of hybrid stepper motors

Hybrid stepper motors have been widely used in many fields due to their high precision, high torque and high reliability.

Automation equipment: Hybrid stepper motors are widely used in automation equipment, such as 3D printers, robots, automatic doors and windows, etc. Its positioning accuracy and torque output capacity can meet the requirements of these devices for high precision and high reliability.
Digital equipment: In digital cameras, camcorders and other devices, hybrid stepper motors are used to adjust the focal length and focus of the lens. Its high precision and stable speed regulation enable the equipment to achieve accurate shooting effects.

Communication equipment: In communication equipment, such as wavelength selectors in optical fiber equipment and directors in antenna equipment, hybrid stepper motors also play an important role. Its stable torque output and high reliability can ensure the normal operation of the equipment.
Packaging machinery: In the production of packaging bags, tasks such as precise positioning and fixed length of sub-plastic film of packaging bags, whether intermittent or continuous supply, can be accurately controlled by hybrid stepper motors.
Manufacturing: In the manufacturing industry, hybrid stepper motors are used to drive various mechanical equipment, such as gear oil pumps. Its rotation position and speed can be accurately controlled by programmable controllers to meet various needs in the production process.

5.Conclusion

In summary, hybrid stepper motors have shown strong application value in many fields such as industrial automation, digital equipment, communication equipment and manufacturing industry due to their high precision, high torque and high reliability. With the continuous development of science and technology, the performance of hybrid stepper motors will be further improved, and the application field will continue to expand.