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Variable Reluctance Stepper Actuators

Variable Reluctance Stepper Actuators

Variable Reluctance Stepper Actuators are known for having soft iron multiple rotors and a wound stator. Variable Reluctance stepper actuators generally operate in step angles from 5 to 15 degrees, at relatively high step rates. They also possess no detent torque. In Figure 5, when phase A is energized, four rotor teeth line up with the four stator teeth of phase A by magnetic attraction. The next step is taken when A is turned off and phase B is energized, rotating the rotor clockwise 15 degrees; Continuing the sequence, C is turned on next and then A again. Counterclockwise rotation is achieved when the phase order is reversed.


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