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What Is Stepping Motor (2)

Time: 2011-12-05 09:50:04

 

   
Variable Reluctance
 
  The Variable Reluctance Hybrid Stepping Motor is the oldest type of stepper motor. It looks like two wheels, with one large wheel housing a smaller wheel. The larger wheel is the stator, and when the stator is energized by the pulses it serves as a magnet for the rotor, which is inside of the stator and made of iron. The teeth of the rotor are attracted to the stator, which prompts the motor to start running.
  
Permanent Magnet
 
  The Permanent Magnet Hybrid Stepping Motor employs permanent magnets and a toothless rotor. The rotor in this engine is magnetized at the north and south end and runs parallel to the rotor shaft. Because of this, the PM motor generates more magnetic force and more torque than the Variable Reluctance motor. A PM motor is also called a “tin can” or “canstock” motor and moves at anywhere from 24 to 48 steps per revolution.
 
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