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Design of an Electromagnetic Actuator Suitable for Production by Rapid Prototyping

[+] Author Affiliations
Matthew S. Moses, Gregory S. Chirikjian

Johns Hopkins University, Baltimore, MD

Paper No. DETC2011-48602, pp. 491-497; 7 pages
  • ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 3: 2011 ASME/IEEE International Conference on Mechatronic and Embedded Systems and Applications, Parts A and B
  • Washington, DC, USA, August 28–31, 2011
  • Conference Sponsors: Design Engineering Division and Computers and Information in Engineering Division
  • ISBN: 978-0-7918-5480-8
  • Copyright © 2011 by ASME


This paper presents a design for an electric motor that can potentially be produced by a personal 3D printer. The concept of a Cyclic Fabrication System — a network of tools, machines, and processes capable of producing all of its constituent components — is discussed in order to provide context for the various factors influencing the design. The motor is an axial-airgap permanent-magnet motor with a flat 2-layer coil. The coil pattern makes minimal use of crossovers or vias, and is well-suited to several methods for fabricating conductive structures that are currently under development. A versatile MATLAB script is presented which is used to generate the coil pattern. Coil geometry is controlled parametrically, and it is straightforward to generate a wide variety of coils, corresponding to different arrangements of magnets and desired coil spacings. The motor uses plastic roller bearings that are easily fabricated.

Copyright © 2011 by ASME



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