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Design of topology optimized compliant legs for bio-inspired quadruped robots.


ABSTRACT: Robotic legs are an important component of the quadruped robot for achieving different motion gaits. Although the conventional rigid-link-based legs can generally perform robust motions, they still have the issues with poor sealing when operating in complex and liquid terrains. To cope with this problem, fully compliant legs with monolithic structure have been introduced in recent years to improve the system compactness and structural compliance of quadruped robots. In this article, we present a topology-optimization-based method to achieve efficient design of compliant robotic legs. In order to balance the structural stiffness and bending flexibility of the realized leg, a multi-objective optimization algorithm is utilized. A series of design cases are presented to illustrate the design principle and analytical procedure of the proposed method. In addition, experimental evaluation is also performed, and the results have demonstrated that, a quadruped robot with the optimized legs can successfully achieve stable and continuous straight-line walking motions.

SUBMITTER: Sun Y 

PROVIDER: S-EPMC10039952 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature

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Design of topology optimized compliant legs for bio-inspired quadruped robots.

Sun Yilun Y   Zong Chujun C   Pancheri Felix F   Chen Tong T   Lueth Tim C TC  

Scientific reports 20230325 1


Robotic legs are an important component of the quadruped robot for achieving different motion gaits. Although the conventional rigid-link-based legs can generally perform robust motions, they still have the issues with poor sealing when operating in complex and liquid terrains. To cope with this problem, fully compliant legs with monolithic structure have been introduced in recent years to improve the system compactness and structural compliance of quadruped robots. In this article, we present a  ...[more]

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