Title
A method to learn the inverse kinematics of multi-link robots by evolving neuro-controllers
Abstract
A general method to learn the inverse kinematic of multi-link robots by means of neuro-controllers is presented. We can find analytical solutions for the most used and well-known robots in the literature. However, these solutions are specific to a particular robot configuration and are not generally applicable to other robot morphologies. The proposed method is general in the sense that it is independent of the robot morphology. The method is based on the evolutionary computation paradigm and works obtaining incrementally better neuro-controllers. Furthermore, the proposed method solves some specific issues in robotic neuro-controller learning: it avoids any neural network learning algorithm which relies on the classical supervised input-target learning scheme and hence it lets to obtain neuro-controllers without providing targets. It can converge beyond local optimal solutions, which is one of the main drawbacks of some neural network training algorithms based on gradient descent when applied to highly redundant robot morphologies. Furthermore, using learning algorithms such as the neuro-evolution of augmenting topologies it is also possible to learn the neural network topology which is a common source of empirical testing in neuro-controllers design. Finally, experimental results are provided when applying the method to two multi-link robot learning tasks and a comparison between structural and parametric evolutionary strategies on neuro-controllers is shown.
Year
DOI
Venue
2009
10.1016/j.neucom.2008.08.021
Neurocomputing
Keywords
Field
DocType
redundant robot morphology,robot morphology,particular robot configuration,multi-link robot,inverse kinematics,well-known robot,better neuro-controllers,robotic neuro-controller learning,neuro-controllers design,general method,evolutionary computing,evolutionary strategy,neural network,analytic solution,gradient descent,robot learning
Robot learning,Gradient descent,Inverse kinematics,Evolutionary robotics,Computer science,Evolutionary computation,Network topology,Artificial intelligence,Robot,Artificial neural network,Machine learning
Journal
Volume
Issue
ISSN
72
13-15
Neurocomputing
Citations 
PageRank 
References 
11
0.74
10
Authors
3
Name
Order
Citations
PageRank
José Antonio Martín H.114014.43
Javier de Lope215319.71
Matilde Santos314324.39