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% Verbal description for system itwolink (itwolink_desc.tex)
% Generated by MTT on Mon Nov 17 10:42:48 GMT 1997.
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %% Version control history
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %% $Id$
% %% $Log$
% %% Revision 1.2 1998/01/19 09:57:26 peterg
% %% Added a discussion of the relevance of G(s).
% %%
% Revision 1.1 1997/12/09 16:53:27 peterg
% Initial revision
%
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
The acausal bond graph of system \textbf{itwolink} is
displayed in Figure \Ref{itwolink_abg} and its label
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Such diagrams can be used for actuator sizing in terms of torque,
velocity and power.
This non-linear system can be linearised (about the various
configurations) and small-signal frequency response methods applied.
For example, the four transfer functions $G_11$ to $G_22$ in Section
\Ref{sec:itwolink_tf} (representing the system linearised about zero
\Ref{sec:itwolink_tf}, give the small-signal relations between the two
spec. torques and the required system torques. Used together with
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