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Comment:Added comment about linearisation point
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SHA3-256: c5b3d1485b00eb8aeb17fdebf623550806d824e2e388c3b4cd76b19c77ceba87
User & Date: gawthrop@users.sourceforge.net on 1998-01-19 10:08:21
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Context
1998-01-19
14:20:07
Initial revision check-in: 8014feb043 user: gawthrop@users.sourceforge.net tags: origin/master, trunk
10:08:21
Added comment about linearisation point check-in: c5b3d1485b user: gawthrop@users.sourceforge.net tags: origin/master, trunk
09:57:26
Added a discussion of the relevance of G(s). check-in: 359bab5f7b user: gawthrop@users.sourceforge.net tags: origin/master, trunk
Changes

Modified mttroot/mtt/lib/examples/Inverse/iTwoLink/itwolink_desc.tex from [6ab02e3a86] to [1a4b6d91b5].

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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
angles and velocities), give the small-signal relations between the
two spec. torques and the required system torques. Used together with
$G_31$ and $G_42$ (relating the spec. torques and the joint
velocities) gives, in principle, a method for evaluating actuator
requirements (for small signals) as a function of frequency.


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