chapp

PURPOSE

CHAPP Charef approximation of an implicit transfer function.

SYNOPSIS

function H = chapp(T, alpha, y, wmax)

DESCRIPTION

CHAPP Charef approximation of an implicit transfer function.
 
 The function is in form   G(s) = (1 + Ts)^alpha.

 Usage: H = CHAPP(T, ALPHA, Y, WMAX)

   where   H - resulting approximation ZPK,
         
           T, ALPHA - parameters such that (1+T*s)^ALPHA is
                         approximated,
           Y - deviation from the desired response in the
               frequency range in dB,
           WMAX - desired system bandwidth in rad/s.

CROSS-REFERENCE INFORMATION

This function calls:

inv INV Fractional-order transfer function inverse
zpk ZPK Return Z(s) of the fractance circuit in form of a zero-pole-gain model

This function is called by: