Speed Control With Low Armature Loss for Very Small Sensorless Brushed DC Motors

@article{Scott2009SpeedCW,
  title={Speed Control With Low Armature Loss for Very Small Sensorless Brushed DC Motors},
  author={Jonathan Scott and John McLeish and W. Howell Round},
  journal={IEEE Transactions on Industrial Electronics},
  year={2009},
  volume={56},
  pages={1223-1229}
}
A method for speed control of brushed dc motors is presented. It is particularly applicable to motors with armatures of less than 1 cm3. Motors with very small armatures are difficult to control using the usual pulsewidth-modulation (PWM) approach and are apt to overheat if so driven. The technique regulates speed via the back electromotive force but does not require current-discontinuous drives. Armature heating in small motors under PWM drive is explained and quantified. The method is… CONTINUE READING