Can the Performance Gains Won in a New Design of Magnet-Less Loudspeaker Vibration Motor be Extended to Rotation Motors? (Electric Vehicles Land, Sea & Air USA 2012)

Mr Geoff Boyd, Managing Director
Coleridge Design Associates
United States
Mar 28, 2012.


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Presentation Summary

  • ML-VCA - The magnet-less voice coil actuator
  • Updating the venerable 1925 Rice-Kellogg loudspeaker motor leveraging;
  • - Advances in modern materials eg SMCs, metamaterial topologies
  • - Advances in electronics devices eg smart power, DSP, PWM etc and
  • - CAD and Multiphysics simulations such as COMSOL
  • Results in a superior performance, loudspeaker vibration motor
  • Can the ML-VCA gains be extended to rotational motors?

Speaker Biography (Geoff Boyd)

Geoff, who hails from the Caribbean, is a 1970 Commonwealth Scholar and Physics and Chemistry graduate of Leeds University with post-graduate and post-doctoral research experience in Material Science at Oxford University. Leaving academia in the early eighties he co-founded Memotech, one the UK's leading first generation PC companies ( ) and then led the company that introduced the world's first computer interactive Videowall display systems which included marketing and selling these high technology display systems into Japan.
In 2010, after over 10 years at NXT plc specializing in New Business Development, Technology Innovation and Intellectual Property Licensing, Geoff rekindled his entrepreneurial activities and founded Silicon Valley based Coleridge Design Associates LLC. At its core and driven by sustainability, is Invention by Design rather than Invention by Serendipity with the skill and experience to recognize the difference between a trip to Brighton (the seaside) and a trip to Mars.
Now, with several very recent patents granted in the audio, touch and haptics fields, Geoff has established and continues to develop Coleridge Design as a formidable technology company with relevant expertise in today's mobile-centric world.