This item is only available for download by members of the University of Illinois community. Students, faculty, and staff at the U of I may log in with your NetID and password to view the item. If you are trying to access an Illinois-restricted dissertation or thesis, you can request a copy through your library's Inter-Library Loan office or purchase a copy directly from ProQuest.
Permalink
https://hdl.handle.net/2142/81067
Description
Title
Biomechanical Energy Conversion
Author(s)
Niu, Penglin
Issue Date
2007
Doctoral Committee Chair(s)
Chapman, Patrick L.
Department of Study
Electrical and Computer Engineering
Discipline
Electrical and Computer Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Engineering, Electronics and Electrical
Language
eng
Abstract
This thesis addresses the design procedure for biomechanical energy conversion systems. First, four motions---heel strike, joint motion, center-of-mass motion, and horizontal foot movement---are analyzed. Center-of-mass motion and horizontal foot movement are identified as the energetic motions. Based on the characteristics of the motions, a linear permanent magnet generator topology is proposed as the actuation topology. Magnetic equivalent circuits are developed for the linear generator. Linear generators are modeled and optimized for the maximum-power output. To transfer the energy into the battery load, a maximum-power extraction circuit is proposed as the interface between the generator and battery load. The circuit functions as a matched resistor to the generator internal resistance. A test generator for center-of-mass motion is built and tested with impedance matching circuit. Average power from 90 mW to 360 mW are measured for different walking conditions.
Use this login method if you
don't
have an
@illinois.edu
email address.
(Oops, I do have one)
IDEALS migrated to a new platform on June 23, 2022. If you created
your account prior to this date, you will have to reset your password
using the forgot-password link below.
