PGains:

-------------------------------------------------------------------------------
   Compute the principal gains for a system of the form
       +
   ----- O ----- K - G ----- O ----
       - |                   |
         |                   |
          -------------------
-------------------------------------------------------------------------------
   Form:
   PGains( g, k, w )
-------------------------------------------------------------------------------

   ------
   Inputs
   ------
   g                   Plant model of type statespace
   k                   Controller structure of type statespace
   w                   Frequency vector

   -------
   Outputs
   -------
   None

-------------------------------------------------------------------------------

Children:

Common: Control/Series
Common: Control/WPZ
Common: Graphics/Plot2D