PhD Defense by Morris Huang

Event Details
  • Date/Time:
    • Thursday September 21, 2017
      11:00 am - 1:00 pm
  • Location: 5029 EBB
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Summaries

Summary Sentence: DEVELOPMENT OF COMPONENT AND SYSTEM-LEVEL TEST METHODS TO CHARACTERIZE MANUAL WHEELCHAIR PROPULSION COST

Full Summary: No summary paragraph submitted.

Morris Huang

BioE PhD Defense Presentation

Date: Monday, September 11th, 2017

Time: 1:00 PM

Location: Parker H. Petit Institute for Bioengineering and Bioscience - Suddath Seminar Room 1128

 

Advisor:

Stephen H. Sprigle, PhD, PT (School of Mechanical Engineering, Georgia Institute of Technology)

 

Committee:

Aldo A. Ferri, PhD (School of Mechanical Engineering, Georgia Institute of Technology)
Jun Ueda, PhD (School of Mechanical Engineering, Georgia Institute of Technology)
Young-Hui Chang, PhD (School of Biological Sciences, Georgia Institute of Technology)

Maysam Ghovanloo, PhD (School of Electrical and Computer Engineering, Georgia Institute of Technology)

Mark Greig (Vice President of R&D Engineering, Sunrise Medical LLC)

 

DEVELOPMENT OF COMPONENT AND SYSTEM-LEVEL TEST METHODS TO CHARACTERIZE MANUAL WHEELCHAIR PROPULSION COST


The current approach to manual wheelchair design lacks a sound and objective connection to metrics for wheelchair performance.  Wheelchair performance directly impacts propulsion effort, which is a strong determinant of user health and mobility.  The objective of this thesis is three-fold: 1) to characterize the inertial and resistive properties of different wheelchair components and configurations, 2) to characterize the systems-level wheelchair propulsion cost, and 3) to model wheelchair propulsion cost as a function of measured component and configuration properties.  To this end, this defense presents the development of 1) a series of instruments and methodologies to evaluate the rotational inertia, rolling resistance, and scrub torque of wheelchair casters and drive wheels on various surface types, and 2) a wheelchair-propelling robot capable of measuring propulsion cost across a collection of maneuvers representative of everyday wheelchair mobility.  Using this collection of devices, I demonstrate the variance manifested in the resistive properties of 8 casters and 4 drive wheels, and the impact of these components (as well as mass and weight distribution) on system-level wheelchair propulsion cost.  Coupling these findings with a theoretical framework describing wheelchair dynamics, I define two empirical models linking system propulsion cost to component resistive properties.  The outcomes of this research empower clinicians and users to make a more informed choice in wheelchair selection by means of a standard, scientifically-motivated performance metric.  Furthermore, the empirical models offer manufacturers a basis by which to optimize their future wheelchair designs, thus motivating a better product for all wheelchair stakeholders.

 

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Graduate Studies

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Phd Defense
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  • Created By: Tatianna Richardson
  • Workflow Status: Published
  • Created On: Aug 28, 2017 - 3:42pm
  • Last Updated: Sep 18, 2017 - 3:22pm