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직관적인 방법에 의한 평면형 2족 로봇의 보행

Walking of a Planar Biped with an Intuitive Method

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This work deals with an intuitive method for a planar biped to walk, which is named Relative Trajectory Control (RTC) method. A key feature of the proposed RTC method is that feet of the robot are controlled to track a given trajectory, which is specially designed relative to the base body of the robot. The trajectory of feet is presumed from analysis of the walking motion of a human being. A simple method to maintain a stable posture while the robot is walking is also introduced in RTC method. In this work, the biped is modeled as a free-floating robot, of which dynamic model is obtained in the Cartesian space. Using the obtained dynamic model, the robot is controlled by a model-based feedback control scheme. The author shows a preliminary experimental result to verify that the biped robot with RTC method can walk on the even or uneven surfaces.

Abstract

This work deals with an intuitive method for a planar biped to walk, which is named Relative Trajectory Control (RTC) method. A key feature of the proposed RTC method is that feet of the robot are controlled to track a given trajectory, which is specially designed relative to the base body of the robot. The trajectory of feet is presumed from analysis of the walking motion of a human being. A simple method to maintain a stable posture while the robot is walking is also introduced in RTC method. In this work, the biped is modeled as a free-floating robot, of which dynamic model is obtained in the Cartesian space. Using the obtained dynamic model, the robot is controlled by a model-based feedback control scheme. The author shows a preliminary experimental result to verify that the biped robot with RTC method can walk on the even or uneven surfaces.

참고문헌 (9)

  1. M. Vukobratović, "Zero-moment point- Thirty-five years of its life", Int. J. Human. Robot., 1(1), pp.157~173 (2004)
  2. S. Kajita, "ZMP-based biped running control", IEEE Robot. and Autom. Magaz., 14(2), pp.63~72 (2007)
  3. J. Y. Kim, "Walking control algorithm of biped humanoid robot on uneven and inclined floor", J. Intell. Robot. Syst., 48(4), pp.457~484 (2007)
  4. Tao Geng, "Fast Biped Walking with a Sensor-driven Neuronal Controller and Real-time Online Learning", Int. J. Robot. Res., 25(3), pp.243~259 (2006)
  5. J. Morimoto, "Learning Biped Locomotion", IEEE Robot. Autom. Magaz., 14(2), pp.41~51 (2007)
  6. C. Chevallereau, "RABBIT: A testbed for advanced control theory", IEEE Control Systems Magazine, 23(5), pp.57~79 (2003)
  7. G. Chung, "Disturbance observer-based robust control for underwater robotic systems with passive joints", 15(5), pp.575~588 (2001)
  8. O. Khatib, "A Unified Approach for Motion and Force Control of Robot Manipulators: The Operational SpaceFormulation", IEEE J. Robot. Autom., RA-3(1), pp.43~53 (1987)

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