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The difference between hybrid stepper motor and servo motor

A stepper motor is a discrete motion device that has a low-cost advantage over a servo motor. The motor is a device for converting mechanical and electrical energy. A motor that converts mechanical energy into electrical energy is called a “generator”; A motor that converts electrical energy into mechanical energy is called a “motor”. Stepper motors and servo motors are motion control products that can accurately locate the motion trajectory and mode of automation equipment, and are mainly used in the field of automation equipment manufacturing. According to the classification of stepper motor rotors, there are three types: reactive (VR type), permanent magnet (PM type), and hybrid (HB type). 1) Reactive (VR type): Gear with rotor teeth. 2) Permanent magnet type (PM type): A rotor with a permanent magnet. 3) Hybrid (HB type): Gear with both permanent magnet and rotor teeth. Classified according to the winding on the stator of stepper motors: there are two phase, three phase, and five equal series.

A motor with two stators is called a two-phase motor, and a motor with five stators is called a five phase motor. The more phases and beats a stepper motor has, the higher its accuracy. Hybrid stepper motors can achieve very precise small incremental step motion, while PM motors generally have low control accuracy requirements. Hybrid stepper motors can achieve complex and precise linear motion control requirements. Permanent magnet motors have relatively small torque and volume, and generally have low control accuracy requirements, making them more cost-effective. Hybrid stepper motors are mainly used in emerging industries such as photovoltaic power generation and 3D printing; Emerging industries: security monitoring; Traditional industries: textile machinery, food packaging. From the perspective of production process and motor control accuracy, hybrid stepper motors are more high-end than permanent magnet stepper motors. Both stepper motors and servo motors are motion control products, but there are differences in product performance. A stepper motor is a discrete motion device that executes a step upon receiving a command. The stepper motor converts the input pulse signal into angular displacement. When the stepper motor driver receives a pulse signal, it drives the stepper motor to rotate a fixed angle in the set direction. Servo motor refers to the conversion of electrical signals into torque and speed in a servo system to drive the control object, which can control speed and position accuracy.

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