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http://dx.doi.org/10.7736/KSPE.2013.30.1.32

A New Wheel Design for Miniaturized Terrain Adaptive Robot  

Kim, Yoo Seok (School of Mechanical and Aerospace Engineering, Seoul National University)
Kim, Haan (School of Mechanical and Aerospace Engineering, Seoul National University)
Jung, Gwang Pil (School of Mechanical and Aerospace Engineering, Seoul National University)
Kim, Seong Han (School of Mechanical and Aerospace Engineering, Seoul National University)
Cho, Kyu Jin (School of Mechanical and Aerospace Engineering, Seoul National University)
Chu, Chong Nam (School of Mechanical and Aerospace Engineering, Seoul National University)
Publication Information
Journal of the Korean Society for Precision Engineering / v.30, no.1, 2013 , pp. 32-38 More about this Journal
Abstract
Small mobile robots which use round wheels are suitable for driving on a flat surface, but it cannot climb the obstacle whose height is greater than the radius of wheels. As an alternative, legged-wheels have been proposed by many researchers due to its better climbing performance. However, driving and climbing performances have a trade-off relationship so that their driving performance should be sacrificed. In this study, in order to achieve both driving and climbing performances, a new transformable wheel was developed. The developed transformable wheel can have a round shape on a flat surface and change its shape into legged-wheel when it makes a contact with an obstacle. For design of the transformable wheel, the performance of legged-wheel was analyzed with respect to the number and curvature of the leg, and then the new transformable wheel was designed based on the analysis. Contrary to the existing transformable wheels that contain additional actuators for the transformation, the developed transformable wheel can be unfolded without any additional actuator. In this study, in order to validate the transformable wheel, a simple robot platform was fabricated. Consequently, it climbed the obstacle whose height is 2.6 times greater than the wheel radius.
Keywords
Wheel Design; Legged-wheel; Climbing Performance; Driving Performance; Transformable Wheel;
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