Hybrid Stepper Motor Ppt

Variable reluctance stepper motor.

Hybrid stepper motor ppt.

Introduction to stepper motors slide 11 types of stepper motors zpermanent magnet magnetic rotor zvariable reluctance non magnetic geared rotor zhybrid combines characteristics from pm and vr magnetic geared rotor the first type we have already seen in this web seminar the permanent magnet stepper motor. You can visit our website to find out all the major stepper motor manufacturers. Two soft iron cups sport teeth to guide the flux from a permanent magnet to the rotor stator air gap. Hybrid stepper motors are named because they use a combination of permanent magnet pm and variable reluctance vr.

It is magnetized to produce a pair of poles as north n and south s as shown in the figure below. Construction the construction details of a 5 phase 10 pole hsm with 50 rotor teeth shown in figure. Hybrid stepper motor the word hybrid means combination or mixture. Servo motor types construction working applications what is a stepper motor.

The hybrid stepper motor is a combination of the features of the variable reluctance stepper motor and permanent magnet stepper motor in the center of the rotor an axial permanent magnet is provided. The stator poles are offset by 90 and. The rotor of a hybrid stepper motor is axially magnetized like a permanent magnet stepper motor and the stator is electromagnetically energized like a variable reluctance stepper motor. A hybrid stepper motor is a combination of the variable reluctance and permanent magent type motors.

To illustrate how these motors work consider a 1 8 hybrid stepper. The shaft of the motor rotates through a fixed angle for each discrete pulse. Hsm is the best choice for the application where small step angles and high starting torque are essential. Shown here are the rotor and stator of a hybrid stepper motor.

Variable reluctance vr motors have a plain iron rotor and operate based on the principle that minimum reluctance occurs with minimum gap hence the rotor points are attracted toward the stator magnet poles. The word hybrid means combination or mixture. The teeth of one ring are offset from those on the other ring by 3 6. The stepper motor driver energizes each pole in sequence so that the rotor turns in a series of increments or steps.

Hybrid synchronous stepper motor. Because of the very high pole count the motion appears to be continuous.