Kinematic Analysis and Experimental Verification on the Locomotion of Gecko

doi:10.1016/S1672-6529(08)60121-3

Abstract

Abstract:

This paper presents a kinematic analysis of the locomotion of a gecko, and experimental verification of the kinematic model. Kinematic analysis is important for parameter design, dynamic analysis, and optimization in biomimetic robot research. The proposed kinematic analysis can simulate, without iteration, the locomotion of gecko satisfying the constraint conditions that maintain the position of the contacted feet on the surface. So the method has an advantage for analyzing the climbing motion of the quadruped mechanism in a real time application. The kinematic model of a gecko consists of four legs based on 7-degrees of freedom spherical-revolute-spherical joints and two revolute joints in the waist. The motion of the kinematic model is simulated based on measurement data of each joint. The motion of the kinematic model simulates the investigated real gecko’s motion by using the experimental results. The analysis solves the forward kinematics by considering the model as a combination of closed and open serial mechanisms under the condition that maintains the contact positions of the attached feet on the ground. The motions of each joint are validated by comparing with the experimental results. In addition to the measured gait, three other gaits are simulated based on the kinematic model. The maximum strides of each gait are calculated by workspace analysis. The result can be used in biomimetic robot design and motion planning.

Key words: kinematic analysis, locomotion of gecko lizard, gait simulation, various gaits, workspace analysis

Woochul Nam, TaeWon Seo, Byungwook Kim, Dongsu Jeon, Kyu-Jin Cho, Jongwon Kim. Kinematic Analysis and Experimental Verification on the Locomotion of Gecko[J].J4, 2009, 6(3): 246-254.

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