Gait Transition Between Simple and Complex Locomotion in Humanoid Robots
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Abstract
In this paper, we present the gait transition between rhythmic and non-rhythmic behaviors during walking of a humanoid robot Nao. In biological studies, two kinds of locomotion were observed in cat during walking on a flat terrain and on a ladder (simple and complex walking). Both behaviors were obtained on the robot thanks to the multi-layers multi-patterns central pattern generator model. We generate the rhythmic behavior from the non-rhythmic one based on the frequency of interaction between the robot feet and the ground surface during the complex locomotion. Although the complex locomotion requires a sequence of descending control signals to drive each robot step, the simple one requires only a triggering signal to generate the periodic movement. The overall system behavior fits with the biological findings in cat locomotion.
Keywords
Complex Locomotor Gait Transition Central Pattern Generator (CPG) Complex Walking Robot StepReferences
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