oustapid

OUSTAPID Obtain Oustaloup approximation of the fractional-order PID controller

         This function generates an Oustaloup filter approximation of a
         fractional PID controller with special consideration for integrator
         and differentiator realization.

  Usage: GC = OUSTAPID(KP, KI, LAM, KD, MU, WB, WH, N, TYPE, RED)

  where  KP, KI, LAM, KD, MU - fractional PID parameters in
                       
                        Gc = Kp + Ki/s^lam + Kd*s^mu

         and WB, WH, N and TYPE (optional) are Oustaloup filter
         approximation parameters (defaults will be used if these
         parameters are omitted).

         It is also possible to invoke model reduction via BALRED()
         function of the Control System toolbox to obtain a lower order of
         the controller.

  See also: fpid, oustapp