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2014 | OriginalPaper | Chapter

5. A Prototype 2N-Legged (insect-like) Robot. A Non-Linear Dynamical System Approach

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Abstract

A nonlinear closed lattice or ring is proposed as a central pattern generator (CPG) for controlling hexapodal robots. We show that the ring composed of six anharmonically interacting units coupled to the limb actuators permits to reproduce typical hexapod gaits. We provide an electronic circuit implementation of the CPG providing the corresponding gaits. Then we propose a method to incorporate the actuator (motor) and leg dynamics in the units of the CPG. With this electro-mechanical device we close the loop CPG—environment—CPG, thus obtaining a decentralized approach for the leg control that does not require higher level CPG intervention during locomotion in a non-smooth hence non flat landscape. The gaits generated by our CPG are not rigid, but adapt to obstacles faced by the robot.

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Metadata
Title
A Prototype 2N-Legged (insect-like) Robot. A Non-Linear Dynamical System Approach
Authors
E. del Rio
M. G. Velarde
Copyright Year
2014
DOI
https://doi.org/10.1007/978-3-319-02362-5_5