Simulation of Open-loop Plasma Vertical Movement Response in the Damavand Tokamak Using Closed-loop Subspace System Identification

摘要

A formulation of a multi-input single-output closed-loop subspace method forsystem identification is employed for the purpose of obtaining control-relevantmodel of the vacuum-plasma response in the Damavand tokamak. Such a model isparticularly well suited for robust controller design. The accuracy of theestimate of the plant dynamics is estimated by different experiments. Themethod has been described in this paper is a worst-case identificationtechnique, that aims to minimize the error between the identified model and thetrue plant. The fitness of the identified model around defined operating pointis more than 90% and compared with physical-based model it has better root meansquare measure of the goodness of fit.