Hybrid Stepper Motor Working

Stepper motors work on the principle of electromagnetism.

Hybrid stepper motor working. Unlike a brushless dc motor which rotates continuously when a fixed dc voltage is applied to it a step motor rotates in discrete step angles the stepper motor can be controlled with or without feedback. A hybrid stepper motor is a combination of the variable reluctance and permanent magent type motors. The motor s position can then be commanded to move and hold at one of these steps without any position sensor for feedback an open loop controller as long as the motor is carefully sized to the application in respect to torque and speed. Hybrid synchronous stepper motor.

To illustrate how these motors work consider a 1 8 hybrid stepper. The vr and pm stepper motors are the most common type of stepper motors. Hybrid stepper motor the word hybrid means combination or mixture. So the poles of the rotor will be changed from one direction to another.

It is magnetized to produce a pair of poles as north n and south s as shown in the figure below. The word hybrid means combination or mixture. 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. Once the xx is stimulated using dc supply then yy cannot excite.

Hybrid stepper motor working. A hybrid stepper motor or a hb stepper motor is a combination of the features of the variable reluctance stepper motor and permanent magnet stepper motor the shaft of a stepper motor rotates in discrete step increments when electrical command pulses are applied to it in the proper sequence. A stepper motor also known as step motor or stepping motor is a brushless dc electric motor that divides a full rotation into a number of equal steps. The hybrid stepper motor as the name suggest is a motor designed to provide better efficiency by combining the pros of both the permanent magnet stepper motor and variable reluctance stepper motor.

Hybrid stepper motors are named because they use a combination of permanent magnet pm and variable reluctance vr. Variable reluctance stepper motor. In the above motor diagram it has two phases four poles and six tooth rotor. There is a.

Working of hybrid stepper motor now if the phase b b is excited keeping a a switched off in such a way that upper pole becomes north and lower becomes south then the rotor will align to a new position by moving through counterclockwise direction. The teeth of one ring are offset from those on the other ring by 3 6. A stepper motor or a step motor is a brushless synchronous motor which divides a full rotation into a number of steps. The working principle of the hybrid stepper motor is similar to the permanent magnet motor.