oustapp

PURPOSE

OUTSAPP Obtain a integer-order approximation of a fractional-order system.

SYNOPSIS

function [fractf] = oustapp(G, wb, wh, N, method)

DESCRIPTION

OUTSAPP Obtain a integer-order approximation of a fractional-order system.

 Usage: TF = OUSTAPP(G, wb, wh, N, method) 
        
        where G - fotf object,
              wb, wh - lower and higher frequency bounds
              N - approximation order
              method - 'oust' for Oustaloup's method (default) or 
                       'ref' for the refined Oustaloup method

              (defaults: wb = 0.001, wh = 1000, N=5, method='oust')

        See also: fsparam

CROSS-REFERENCE INFORMATION

This function calls:

fotfparam FOTFPARAM get FOTF object parameters
new_fod NEW_FOD Creates a new FO transfer function approximation in ZPK
oustafod OUSTAFOD Oustaloup's approximation of a s^r operator
fix_s FIX_S Extract integer part from a given number by using sprintf

This function is called by:

step STEP Step response of fractional-order dynamic systems.
oustapid OUSTAPID Obtain Oustaloup approximation of the fractional-order PID controller
fpid_optimfun FPID_OPTIMFUN Optimal FPID Design helper function
fpid_optimize FPID_OPTIMIZE Obtain optimized settings for fractional PID controller
fpid_optimnlc FPID_OPTIMNLC Non-linear constraints for FPID_OPTIMIZE
fotf_gui FOTF_GUI Fractional-order transfer function analysis tool
fpid FPID Fractional-order PID controller design tool.
fpid_optim FPID_OPTIM Fractional-order PID optimization tool.
fotf2io FOTF2IO Identify fractional-order tranfer function as integer-order model
fracidfun FRACIDFUN Compute fractional time-domain identification cost function.
oustapp OUSTAPP Oustaloup approximation for FSPARAM object