The step angle can be varied as per the design of the motor. We thank our patrons for making LE's educational service sustainable. The stepping angle of 2-phase is generally 1.8°, that of 3-phase 1.2° and that of 5-phase is 0.72°. VR stepper motor is generally 3-phase，high torque output can be realized; the stepping angle is generally 1.5, but the noise and vibration is large; the rotor magnetic circuit of VR stepper motor is made of soft magnetic materials. An example of a multi-pole stepper motor is illustrated here. Disadvantage of stepper motor is that if not properly controlled resonance can occur and stepper motor is not easy to operate at extremely high speeds hence causing vibrations. The magnetic stator field moves the permanent magnet. PrinciPle of stePPer motor A stepper motor is an electromechanical device which converts electrical pulses into discrete mechanical movements. This principle is used in the stepper motor, composed of a fixed part (the stator) made of cyclically energized coils and a moving part (the rotor) made of ferromagnetic mate- rial or magnets. The rotor and stator have poles which may be teethed or not depending upon the type of stepper. Thank you for downloading Introduction to Stepper Motors. Therefore moving to accelerate position is simply matter of sending the commends to the pole of the stepper motor. If you are looking for a Nema 17 stepper motor, Nema 23 stepper motor, Nema 34 stepper motor, ATO.com is best choice for you. The basic working principle of the stepper motor is the following: By energizing one or more of the stator phases, a magnetic field is generated by the current flowing in … Stepper Motor Working Principle Stepper motors are DC motors that move in discrete steps. In order to move the stepper motor in clock wise the top of the electromagnet pole will be deactivated. Now the top of the electromagnet will be deactivated and the right side electromagnet is activated carrying rotor to move 90 degree in clockwise and align with the active magnet as shown in position 2. it acts as a square wave generator. They will be slightly offset from right electromagnet. 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