Design, Modeling and Control of a Biped Line-Walking Robot

39 ISSN 1729‐8806, pp. 41‐50 Design, Modeling and Control of a Biped Line-Walking Robot Ludan Wang1, Fei Liu1, Shaoqiang Xu1, Zhen Wang1, Sheng Cheng1 and Jianwei Zhang1,2 1Laboratory of Intelligent Robot Engineering, Kunshan Institute of Industry Research, Kunshan, China 2TAMS, Department of Informatics, University of Hamburg, Hamburg, Germany [email protected] Abstract: The subject of this paper is the design and analysis of a biped line walking robot for inspection of power transmission lines. With a novel mechanism the centroid of the robot can be concentrated on the axis of hip joint to minimize the drive torque of the hip joint. The mechanical structure of the robot is discussed, as well as forward kinematics. Dynamic model is established in this paper to analyze the inverse kinematics for motion planning. The line‐walking cycle of the line‐walking robot is composed of a single‐support phase and a double‐support phase. Locomotion of the line‐walking robot is discussed in details and the obstacle‐navigation process is planed according to the structure of power transmission line. To fulfill the demands of line‐walking, a control system and trajectories generation method are designed for the prototype of the line‐walking robot. The feasibility of this concept is then confirmed by performing experiments with a simulated line environment.