Stepper Motors
Stepper motors are a special case of Brushless DC Motors. Construction is identical except that they contain no position sensors. Excitation is sequentially applied to the windings, creating the rotating field to produce torque.
- Uses:
- Low torque applications
- Open loop micropositioning
- Timer switching
- Advantages
- Simplicity
- Compatability with digital control schemes
- Disadvantages
- High continuous power dissipation
- High ripple torque
- Advantages
Used for noncritical, low power applications, since positional information is easily lost if acceleration or velocity limits are exceeded.
See also: Brush DC Motors, Brushless DC Motors, Electric Motors.
Subjects: Electronics