The biologically inspired Sprawl family of hexapedal robots has shown that fast and stable running is possible with only open-loop control. Proper design of the passively self-stabilizing leg structure has enabled these robots to run at speeds of up to 15 bodylengths/s and over uneven terrain. Unlike other running robots built to date, the Sprawl robots’ front and rear legs are designed to preform distinct functional roles. Like the cockroaches that inspired them, the front legs of the robots act to lift and decelerate, while the rear legs provide the primary forward thrust. This paper uses a dynamic simulation to investigate the effect that changing the robot’s leg structure and posture has on its performance. The simulation results support our hypothesis that the use of a differential leg function induced through postural adjustments effectively trades efficiency for stability.
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March 2006
Technical Papers
The Effect of Leg Specialization in a Biomimetic Hexapedal Running Robot
Jonathan E. Clark,
Jonathan E. Clark
Department of ESE,
e-mail: jonclark@seas.upenn.edu
University of Pennsylvania
, Philadelphia, PA 19104
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Mark R. Cutkosky
Mark R. Cutkosky
Department of Mechanical Engineering,
Stanford University
, Stanford, CA 94305
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Jonathan E. Clark
Department of ESE,
University of Pennsylvania
, Philadelphia, PA 19104e-mail: jonclark@seas.upenn.edu
Mark R. Cutkosky
Department of Mechanical Engineering,
Stanford University
, Stanford, CA 94305J. Dyn. Sys., Meas., Control. Mar 2006, 128(1): 26-35 (10 pages)
Published Online: December 1, 2005
Article history
Received:
April 1, 2005
Revised:
December 1, 2005
Citation
Clark, J. E., and Cutkosky, M. R. (December 1, 2005). "The Effect of Leg Specialization in a Biomimetic Hexapedal Running Robot." ASME. J. Dyn. Sys., Meas., Control. March 2006; 128(1): 26–35. https://doi.org/10.1115/1.2168477
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