Fractional order Multiple Modeling for Plasma Vertical Position in Damavand tokamak

In this research paper, modeling of plasma vertical position (PVP) in Damavand tokamak is discussed. Due to complexity and nonlinearity of this machine, conventional linear methods of modeling and system identification cannot satisfy expected performance. In this research paper, the fractional order multiple model (FOMM) is proposed for modeling of plasma position in total operating regions of tokamak machine. By using the experimental data, several fractional order local simple models were constructed based on error criterion to cover all possible operating points. Then the obtained model bank is evaluated and validated using experimental data. The results of validation and comparison with previous models on the same machine show improvement of modeling performance.