ffid

FFID Frequency-domain identification of fractional-order models

 This function uses methods from NINTEGER toolbox by Duarte Valerio.

 Usage: [A, NA, B, NB, G, J] = FFID(IDATA, Q, ORD, METHOD)

 where   A, NA, B, NB, G, J - identified model coefficients/exponents,
                               corresponding FOTF object and J error index

         IDATA - FFIDATA structure with observed magnitude, phase and 
                 frequencies at which the observations were made
         Q     - commensurate order of model
         ORD   - orders of pole and zero polynomials: [N; M]; for
                 'hartley' method only the pole polynomial N is required.
         method- identification method: 'h' - Hartley, 'l' - Levy or 'v' -
                 Vinagre (default). Please consult the NINTEGER toolbox
                 documentation for details about each method.