As an actuator, a stepper motor is one of the key products of electromechanical integration and is widely used in various automation equipment. Stepper motors are open-loop control elements that convert electrical pulse signals to angular or linear displacements. When the step driver receives a pulse signal, it drives the stepper motor to rotate in a set direction by a fixed angle (ie, a step angle). The amount of angular displacement can be controlled by controlling the number of pulses to achieve accurate positioning. So what is the difference between a hybrid stepper motor, a hybrid stepper motor, and a reactive stepper motor? Follow the small series in detail to understand the hybrid stepper motor. The hybrid stepper motor is a stepper motor designed to combine the advantages of a permanent magnet type and a reactive type. It is divided into two phases, three phases and five phases. 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 is generally 0.72 degrees. The rotor of the hybrid stepping motor is magnetic, so the torque generated at the same stator current is larger than the reactive stepper motor, and the step angle is usually small. Therefore, the economical CNC machine tool generally needs to use a mixture. Stepper motor drive. However, the structure of the hybrid rotor is complex and the rotor inertia is large, and its rapidity is lower than the reactive stepper motor. 1, the output torque, high speed. 2, the motor heat is small, low noise, high efficiency. 3, high-speed stop stable and rapid, no zero-speed oscillation running smoothly, vibration and noise. 4, fast response, suitable for frequent start and stop occasions. The structure of the hybrid stepping motor is different from that of the reactive stepping motor. The stator and the rotor of the reactive stepping motor have an integral structure, and the stator and the rotor of the hybrid motor are divided into two sections as shown in the figure below. There are also small teeth on the surface. The two slots of the stator are in a good position and there are windings on it. Shown on the above is a two-phase four-pole motor, where l, 3, 5, and 7 are A-phase winding poles, 2, 4, 6, and 8 are B-phase winding poles. The adjacent pole windings of each phase are wound in the opposite direction to produce the closed magnetic circuit shown in the x, y direction view in the above figure. Phase B is similar to phase A. The two tooth slots of the rotor are offset from each other by half a pitch (see Figure 5.1.5). The middle is connected by a ring-shaped permanent magnet, and the poles of the two rotors have opposite magnetic poles. According to the same principle of the reactive motor, the motor can be continuously rotated counterclockwise or clockwise as long as the motor is energized in the order of A-B-A-B-A or A-B-A-B-A. Obviously, all the teeth on the same piece of rotor have the same polarity, and the two pieces of rotor pieces have opposite polarities. The biggest difference between a hybrid stepper motor and a reactive stepper motor is that when the magnetized permanent magnetic material is demagnetized, there will be an oscillation point and a step-out zone. The rotor of the hybrid stepper motor is magnetic, so the torque generated at the same stator current is larger than the reactive stepper motor and the step angle is usually smaller. Therefore, the economical CNC machine tool generally needs to use the hybrid. Stepper motor drive. However, the structure of the hybrid rotor is complex and the rotor inertia is large, and its rapidity is lower than the reactive stepper motor. 1, standard two-phase stepping motor 2, standard three-phase stepping motor 3, economical two-phase stepping motor 4, economical three-phase stepping motor 1. Different in structure and material, the hybrid motor has permanent magnetic material inside, so the hybrid motor has self-resistance (that is, there is a certain self-locking force when the motor is not powered), and the reactive motor has no self-resistance. . 2. There is a difference in the running performance. The hybrid motor is relatively stable during operation, the output torque is relatively large, and the running sound is small. 3. There are differences in the price of the two motors, and the reactive motor is cheaper than the hybrid motor. "Detailed structure and working principle of HB type hybrid stepper motor" "One article to understand the relationship between HB hybrid stepping motor and the number of phases, the number of teeth of the rotor, the number of the main pole"
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March 26, 2023