Biped walking control using a trajectory library

Publisher: Cambridge University Press

E-ISSN: 1469-8668|31|2|311-322

ISSN: 0263-5747

Source: Robotica, Vol.31, Iss.2, 2013-03, pp. : 311-322

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Abstract

This paper presents biped walking control using a library of optimal trajectories. Biped walking control is formulated as an optimal control problem. We use a parametric trajectory optimization method to find the periodic steady-state walking trajectory. As a second stage, we use Differential Dynamic Programming to generate a library of optimal trajectories and locally linear models of the optimal control law, which are used to construct a more global control law. The proposed controller is compared with a trajectory tracking controller using optimal gains. The utility and performance of the proposed method are evaluated using simulated walking control of a planar five-link biped robot.