System identification for plasma shape control on EAST

The plasma shape control plays an important role in Tokamak operation. With the purpose of improving the control capacity and performance, as well as system efficiency, we start the development of system identification on EAST (Experimental Advanced Superconducting Tokamak). On the basis of ISOFLUX principle employed on EAST, we attempt to build up a control-oriented model. By comparison, we adapt PEM (Prediction-Error-Methods). The corresponding procedure and result are presented.