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Effects of Miniaturisation on Electromagnetic Motors for Micro Mechatronic Systems

[+] Author Affiliations
Samir Mekid

King Fahd University of Petroleum & Minerals, Dhahran, Saudi Arabia

Paper No. IMECE2010-38651, pp. 177-183; 7 pages
doi:10.1115/IMECE2010-38651
From:
  • ASME 2010 International Mechanical Engineering Congress and Exposition
  • Volume 10: Micro and Nano Systems
  • Vancouver, British Columbia, Canada, November 12–18, 2010
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4447-2
  • Copyright © 2010 by ASME

abstract

This paper explores the possibilities and the limitations of scaling down DC motors needed for micro mechatronic systems. It is observed that power and torque decrease with the volume of the motor i.e. diameter and length. Hence producing powerful micro-motors with high torque is currently not possible with direct miniaturisation. Alternative ways of improving the performance are crucial. Background discussion is suggested in this paper. Yet, rotational speed increases when the motors become smaller. They can reach very high speed ranges (in the order of 100,000 rpm) due to the reduction in inertia and friction but with lower torques though. A general behaviour trend between the motor size and its characteristics are discussed. It is expected in order to reach the full potential of micro motors that innovative principles should be considered to generate rotational motion suitable for miniaturisation.

Copyright © 2010 by ASME

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