A Humanoid Robot Gait Planning and Its Stability Validation


Gait planning based on linear inverted pendulum (LIPM) on structured road surface can be quickly generated because of the simple model and definite physical meaning. However, over-simplifi- cation of the model and discontents of zero velocity and acceleration boundary conditions when robot starts and stops walking lead to obvious difference between the model and the real robot. In this paper, parameterized gait is planned and trajectories’ smoothness of each joint angle and centroid are ensured using the 3-D LIPM theory. Static walking method is used to satisfy zero velocity and acceleration boundary conditions. Besides, a multi-link model is built to validate the stability. Simulation experiments show that: despite of some deviation from the theoretical solution, the actual zero-moment point (ZMP) is still within the support polygon, and the robot walks steadily. In consequence, the rationality and validity of model simplification of LIPM is demonstrated.

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Zeng, J. , Chen, H. , Yin, Y. and Yin, Y. (2014) A Humanoid Robot Gait Planning and Its Stability Validation. Journal of Computer and Communications, 2, 68-74. doi: 10.4236/jcc.2014.211009.

Conflicts of Interest

The authors declare no conflicts of interest.


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