What is stepper motor ?



What is stepper motor ?

Stepper Motor

  • Stepper motors are DC motors that move in discrete steps. They have multiple coils that are organized in groups called "phases". By energizing each phase in sequence, the motor will rotate, one step at a time. With a computer controlled stepping you can achieve very precise positioning and/or speed control.

Types of Stepper Motor

  1. Permanent magnet stepper
  2. Hybrid synchronous stepper
  3. Variable reluctance stepper

Permanent magnet stepper

  • Permanent magnet motors use a static magnet (PM) within the rotor and operate the attraction or repulsion between the rotor PM and also the stator coil electromagnets.

Hybrid synchronous stepper

  • Hybrid stepper motors are named because they use a mixture of static magnet (PM) and variable reluctance (VR) techniques to attain most power in an exceedingly little package size.

Variable Reluctance stepper

  • Variable Reluctance (VR) motors have a comprehensible iron rotor and operate supported the principle that minimum reluctance happens with minimum gap, hence the rotor points are attracted toward the mechanical device magnet poles.

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