MODIFIED MODEL REFERENCE ADAPTIVE CONTROL FOR PLANTS WITH UNMODELLED HIGH FREQUENCY DYNAMICS

L. Yang, S. A. Neild, D. J. Wagg

Abstract

In this paper we develop a modified MRAC strategy for use on plants with unmodelled high frequency dynamics. The MRAC strategy is made up of two parts, an adaptive control part and a fixed gain control part. The adaptive algorithm uses a combination of low and high pass filters such that the frequency range for the adaptive part of the strategy is limited. This reduces adaptation to unexpected high frequency dynamics and removes low frequency gain wind-up. In this paper we consider two examples of plants with unmodelled high frequency dynamics, both of which exhibit unstable behaviour when controlled using the standard MRAC strategy. By using the modified strategy we demonstrate that robustness is significantly improved.

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Paper Citation


in Harvard Style

Yang L., A. Neild S. and J. Wagg D. (2007). MODIFIED MODEL REFERENCE ADAPTIVE CONTROL FOR PLANTS WITH UNMODELLED HIGH FREQUENCY DYNAMICS . In Proceedings of the Fourth International Conference on Informatics in Control, Automation and Robotics - Volume 3: ICINCO, ISBN 978-972-8865-84-9, pages 196-201. DOI: 10.5220/0001617101960201


in Bibtex Style

@conference{icinco07,
author={L. Yang and S. A. Neild and D. J. Wagg},
title={MODIFIED MODEL REFERENCE ADAPTIVE CONTROL FOR PLANTS WITH UNMODELLED HIGH FREQUENCY DYNAMICS},
booktitle={Proceedings of the Fourth International Conference on Informatics in Control, Automation and Robotics - Volume 3: ICINCO,},
year={2007},
pages={196-201},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0001617101960201},
isbn={978-972-8865-84-9},
}


in EndNote Style

TY - CONF
JO - Proceedings of the Fourth International Conference on Informatics in Control, Automation and Robotics - Volume 3: ICINCO,
TI - MODIFIED MODEL REFERENCE ADAPTIVE CONTROL FOR PLANTS WITH UNMODELLED HIGH FREQUENCY DYNAMICS
SN - 978-972-8865-84-9
AU - Yang L.
AU - A. Neild S.
AU - J. Wagg D.
PY - 2007
SP - 196
EP - 201
DO - 10.5220/0001617101960201