Title :
A gait planning approach for locomotion stability of four-legged robots
Author :
Wen, Jintao ; Wang, Jianhua ; Chen, Weihai ; Zhang, Jingbing
Author_Institution :
Sch. of Autom. Sci. & Electr. Eng., BeiHang Univ., Beijing, China
Abstract :
In this paper, we present a method to plan gait for a four legged robot that we specially design for realizing stability locomotion. Gait is crucial to the four legged robot locomotion, especially when the robot intends to get through irregular terrains adaptively. Compare to six legged robot or more leg robot, four legged robot easily loses its stability and slip up. We firstly analyze the locomotion of four legged animal and get six typical gaits that animal frequently uses. Then, we propose an algorithm to get the first and second hip joint angle, knee joint angle according to the relation between foot workplace and gait which robot walk is used. Especially we analyze the stability margin of walk gait and give a method to change the stability margin when robot uses walk gait, this method can easily make four legged robot walk stability. Finally, we successfully demonstrate our method by a simulation.
Keywords :
legged locomotion; mechanical stability; motion control; path planning; foot workplace; four legged robot locomotion; gait planning approach; hip joint angle; knee joint angle; six legged robot; stability locomotion; stability margin; Foot; Hip; Joints; Legged locomotion; Robot kinematics; Stability analysis;
Conference_Titel :
Industrial Electronics and Applications (ICIEA), 2012 7th IEEE Conference on
Conference_Location :
Singapore
Print_ISBN :
978-1-4577-2118-2
DOI :
10.1109/ICIEA.2012.6360745