Design News is part of the Informa Markets Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them. Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

Brushless dc motor fine tunes itself while running

Brushless dc motor fine tunes itself while running

A newly patented invention avoids the cumbersome procedure of "fine tuning" electric motors. At NASA's Marshall Space Flight Center, Ann M. Casper designed a brushless dc motor that dynamically times the commutation between the rotor and stator--without disassembling its housing. She put Hall-effect sensors on the commutation board to provide feedback on the rotor position. A tool inserted into the endcap, while the motor runs, "tunes" the motor for maximum operating efficiency. invention received United States Patent 5654599.

Hide comments


  • Allowed HTML tags: <em> <strong> <blockquote> <br> <p>

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.