Community Research and Development Information Service - CORDIS

Abstract

In this paper we describe the application of an H(?) System Identification procedure to a Tokamak. The work is motivated by the need to create linear models which are suitable for controller design and which may be used to validate different models derived from physics principles. The paper develops an H(?) System Identification algorithm and demonstrates its successful application to the Tokamak Ó Configuration Variable (TCV). Each of the required steps is detailed, from the design of identification experiments through to the creation of low-order models from a combination of Hankel model reduction and Chebycheff approximation. The method described in this paper is a worst-case identification technique, in that it aims to minimize the H(?) error between the identified model and the true plant. Such a model is particularly well suited for robust controller design. The identified model of TCV is compared with various physics-based models.

Additional information

Authors: COUTLIS A, Centre for Process Systems Engineering and Department of Electrical Engineering, Imperial College, London (GB);LIMEBEER DJN, Centre for Process Systems Engineering and Department of Electrical Engineering, Imperial College, London (GB);WAINWRIGHT JP, Centre for Process Systems Engineering and Department of Electrical Engineering, Imperial College, London (GB);LISTER JB, Centre de Recherches en Physique des Plasmas, cole Polytechnique FÚdÚrale de Lausanne, Association EURATOM-ConfÚdÚration Suisse (CH);VYAS P, Centre de Recherches en Physique des Plasmas, cole Polytechnique FÚdÚrale de Lausanne, Association EURATOM-ConfÚdÚration Suisse (CH)
Bibliographic Reference: Report: LRP 667/00 EN (2000) 12 pp.
Availability: Available from cole Polytechnique FÚdÚrale de Lausanne (CH)
ISBN: ISSN 0458-5895
Follow us on: RSS Facebook Twitter YouTube Managed by the EU Publications Office Top