Battery-powered wheelchairs require accurate and reliable range prediction to offer the maximum visibility of the current battery state to users, and to help them schedule future trip plans as well as fulfill the maximum battery economy potential. It is also one of the most critical parameters of wheelchairs to ensure the safety of users. However, range prediction is a very complicated issue by the fact that batteries are subject to current profiles, external influences, history of battery use, and aging. The prediction is even more challenging with unknown future driving conditions. The aim of this paper is to use a preview of a 3-D map, geographic information systems, and global positioning systems to develop an accurate range estimation system for battery-powered wheelchairs. This allows range prediction based on previewed driving road conditions. The nonlinearity of Li-ion batteries is also taken into consideration by using a circuit based battery model. Altogether, this methodology offers robustness and accuracy under varying operating conditions. Simulation results are presented to validate the proposed estimation method.
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ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
August 12–15, 2012
Chicago, Illinois, USA
Conference Sponsors:
- Design Engineering Division
- Computers and Information in Engineering Division
ISBN:
978-0-7918-4503-5
PROCEEDINGS PAPER
Accurate Range Estimation Using Terrain Preview for Power Wheelchairs
Xiaoli Zhang,
Xiaoli Zhang
Wilkes University, Wilkes-Barre, PA
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Wei Zhang
Wei Zhang
Lanzhou Jiaotong University, Lanzhou, Gansu, China
Search for other works by this author on:
Xiaoli Zhang
Wilkes University, Wilkes-Barre, PA
Wei Zhang
Lanzhou Jiaotong University, Lanzhou, Gansu, China
Paper No:
DETC2012-70920, pp. 825-831; 7 pages
Published Online:
September 9, 2013
Citation
Zhang, X, & Zhang, W. "Accurate Range Estimation Using Terrain Preview for Power Wheelchairs." Proceedings of the ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 4: 36th Mechanisms and Robotics Conference, Parts A and B. Chicago, Illinois, USA. August 12–15, 2012. pp. 825-831. ASME. https://doi.org/10.1115/DETC2012-70920
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