Journal of Northeastern University Natural Science ›› 2016, Vol. 37 ›› Issue (9): 1305-1310.DOI: 10.12068/j.issn.1005-3026.2016.09.019

• Mechanical Engineering • Previous Articles     Next Articles

Design and Analysis of Running Quadruped Robots’ Leg Structure

MA Zong-li, LIU Yong-chao, ZHU Yan-fang, WANG Jian-ming   

  1. Key Laboratory of High-Efficiency and Clean Mechanical Manufacture of Ministry of Education, Shandong University, Jinan 250061, China.
  • Received:2015-05-11 Revised:2015-05-11 Online:2016-09-15 Published:2016-09-18
  • Contact: WANG Jian-ming
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Abstract: In order to meet the requirements of quadruped robots’ leg structure with high cushion performance in running movements, a leg structure of running quadruped robots was designed, which was based on the bone-muscle biomechanical properties of dog forelegs. The leg structure has three joints and three DOFs. The hip joint and knee joint have active pitching-DOF, and the ankle joint has passive pitching-DOF. The dynamics and stiffness characteristics of the leg structure were analyzed, and the simulation of bound gait was done. The simulation results showed that a quadruped robot with this leg structure can run rapidly and stably while the joint drive torque is low. It was proven that this leg structure has the feasibility and rationality of making quadruped robots run in bound gait.

Key words: quadruped robot, running, leg structure, dynamics analysis, simulation

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