OPTIMAL CONTROL WITH ADAPTIVE INTERNAL DYNAMICS MODELS

Djordje Mitrovic, Stefan Klanke, Sethu Vijayakumar

2008

Abstract

Optimal feedback control has been proposed as an attractive movement generation strategy in goal reaching tasks for anthropomorphic manipulator systems. The optimal feedback control law for systems with non-linear dynamics and non-quadratic costs can be found by iterative methods, such as the iterative Linear Quadratic Gaussian (iLQG) algorithm. So far this framework relied on an analytic form of the system dynamics, which may often be unknown, difficult to estimate for more realistic control systems or may be subject to frequent systematic changes. In this paper, we present a novel combination of learning a forward dynamics model within the iLQG framework. Utilising such adaptive internal models can compensate for complex dynamic perturbations of the controlled system in an online fashion. The specific adaptive framework introduced lends itself to a computationally more efficient implementation of the iLQG optimisation without sacrificing control accuracy – allowing the method to scale to large DoF systems.

Paper Citation

in Harvard Style

Mitrovic D., Klanke S. and Vijayakumar S. (2008). OPTIMAL CONTROL WITH ADAPTIVE INTERNAL DYNAMICS MODELS . In Proceedings of the Fifth International Conference on Informatics in Control, Automation and Robotics - Volume 1: ICINCO, ISBN 978-989-8111-30-2, pages 141-148. DOI: 10.5220/0001484501410148

in Bibtex Style

@conference{icinco08,
author={Djordje Mitrovic and Stefan Klanke and Sethu Vijayakumar},
title={OPTIMAL CONTROL WITH ADAPTIVE INTERNAL DYNAMICS MODELS},
booktitle={Proceedings of the Fifth International Conference on Informatics in Control, Automation and Robotics - Volume 1: ICINCO,},
year={2008},
pages={141-148},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0001484501410148},
isbn={978-989-8111-30-2},
}

in EndNote Style

TY - CONF
JO - Proceedings of the Fifth International Conference on Informatics in Control, Automation and Robotics - Volume 1: ICINCO,
TI - OPTIMAL CONTROL WITH ADAPTIVE INTERNAL DYNAMICS MODELS
SN - 978-989-8111-30-2
AU - Mitrovic D.
AU - Klanke S.
AU - Vijayakumar S.
PY - 2008
SP - 141
EP - 148
DO - 10.5220/0001484501410148