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Walking Control Algorithm of Biped Humanoid Robot on Uneven and Inclined Floor

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Abstract

This paper describes walking control algorithm for the stable walking of a biped humanoid robot on an uneven and inclined floor. Many walking control techniques have been developed based on the assumption that the walking surface is perfectly flat with no inclination. Accordingly, most biped humanoid robots have performed dynamic walking on well designed flat floors. In reality, however, a typical room floor that appears to be flat has local and global inclinations of about 2°. It is important to note that even slight unevenness of a floor can cause serious instability in biped walking robots. In this paper, the authors propose an online control algorithm that considers local and global inclinations of the floor by which a biped humanoid robot can adapt to the floor conditions. For walking motions, a suitable walking pattern was designed first. Online controllers were then developed and activated in suitable periods during a walking cycle. The walking control algorithm was successfully tested and proved through walking experiments on an uneven and inclined floor using KHR-2 (KAIST Humanoid robot-2), a test robot platform of our biped humanoid robot, HUBO.

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Authors and Affiliations

  1. HUBO Laboratory, Humanoid Robot Research Center, Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, 373-1 Guseong-dong Yuseong-gu, Daejeon, 305-701, South Korea

    Jung-Yup Kim, Ill-Woo Park & Jun-Ho Oh

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  1. Jung-Yup Kim
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  2. Ill-Woo Park
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  3. Jun-Ho Oh
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Correspondence to Jung-Yup Kim.

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Kim, JY., Park, IW. & Oh, JH. Walking Control Algorithm of Biped Humanoid Robot on Uneven and Inclined Floor. J Intell Robot Syst 48, 457–484 (2007). https://doi.org/10.1007/s10846-006-9107-8

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  • DOI: https://doi.org/10.1007/s10846-006-9107-8

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