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Dynamic Effects of Obstacles on Two-Wheeled Inverted-Pendulum Transporters

[+] Author Affiliations
John Harber, Christopher Adams, Arnoldo Castro, William Singhose

Georgia Institute of Technology, Atlanta, GA

Paper No. DETC2015-47479, pp. V006T10A080; 8 pages
  • ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 6: 11th International Conference on Multibody Systems, Nonlinear Dynamics, and Control
  • Boston, Massachusetts, USA, August 2–5, 2015
  • Conference Sponsors: Design Engineering Division, Computers and Information in Engineering Division
  • ISBN: 978-0-7918-5716-8
  • Copyright © 2015 by ASME


Two-wheeled inverted pendulums can be used as personal transporters. Their maneuverability and small footprint give them some desirable properties for this application. However, given the unstable mechanical design and the complicated control system that is required, inverted pendulums make complex and unexpected motions in response to both movements of the rider and disturbances from the operating environment. These complex motions lead to dynamic hazards that may cause the rider to fall off or the device to fall over. To better understand some of the complex motions, the response of a two-wheeled inverted-pendulum transporter traveling over bumps of various sizes is studied. Three effects of riding over bumps are demonstrated through an experimental investigation. When striking a bump, the transporter may bounce in the vertical direction, depending on the approach speed and size of the bump. Bumps also cause the transporter to pitch forward. When striking a bump with one wheel, the transporter turns towards the bump. All three effects can act to destabilize the machine and rider.

Copyright © 2015 by ASME
Topics: Pendulums



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