Abstract
Because of their outstanding climbing and motor coordination ability, geckos have provided the basis for a peculiar bionic model leading to the development of a gecko-robot. A three-dimensional locomotion observation system was constructed to measure angular orientations of joints while geckos trotted (337.1 mm/s) and walked (66.7 mm/s) on horizontal surfaces, and trotted (241.5mm/s) and walked (30.6mm/s) on vertical surfaces. Moving over horizontal surfaces, the joints rotated more quickly the greater the speed, and the swinging scope of forelimbs stayed nearly at 59 degrees when swinging forward, but extended from 72 degrees to 79.2 degrees when swinging backward. The lifting angle of forelimbs was always positive to keep the center of mass close to the surface when moving up vertical surfaces, the scope of the forward swinging forelimbs forward extended from 33.7 degrees to 36.7 degrees with increasing speed, while the scope of backward swinging forelimbs remained almost the same at 87.5 degrees. Alternative gaits had little effect on the swing angle of hindlimbs of the geckos moving on both horizontal and vertical surfaces.
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Supported by the National High Technology Research and Development Program of China (Grant No. 2007AA04Z201) and National Natural Science Foundation of China (Grant Nos. 60535020, 30700068 and 50705043)
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Li, H., Dai, Z., Shi, A. et al. Angular observation of joints of geckos moving on horizontal and vertical surfaces. Chin. Sci. Bull. 54, 592–598 (2009). https://doi.org/10.1007/s11434-009-0077-7
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DOI: https://doi.org/10.1007/s11434-009-0077-7