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function  structure = AE_eqn(name,bond_number,bonds,direction,cr,args, ...
                            structure,eqnfile);
% AE_eqn. Equation generation for effort amplifier.

% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %% Version control history
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %% $Id$
% %% $Log$




% %% Revision 1.2  1996/08/30 13:23:11  peter
% %% Added bond number check
% %%
% %% Revision 1.1  1996/08/22 13:12:34  peter
% %% Initial revision
% %%
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%









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function  structure = AE_eqn(name,bond_number,bonds,direction,cr,args, ...
                            structure,eqnfile);
% AE_eqn. Equation generation for effort amplifier.

% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %% Version control history
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %% $Id$
% %% $Log$
% %% Revision 1.3  1996/08/30 19:03:10  peter
% %% Added argument check.
% %% Added extra name argument.
% %%
% %% Revision 1.2  1996/08/30 13:23:11  peter
% %% Added bond number check
% %%
% %% Revision 1.1  1996/08/22 13:12:34  peter
% %% Initial revision
% %%
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% Flow on port 1 is always zero
   fprintf(eqnfile, '%s := 0;\n', ...
      varname(name,bond_number(1), -1));
  
  
LHS_cause = 1;
RHS_cause = 1;

if e_2 == -1 				% Unicausal: e_2 := e_1
  LHS_number = bond_number(2);
  RHS_number = bond_number(1);


else 	                                % Bicausal: e_1 := e_2      
  LHS_number = bond_number(1);
  RHS_number = bond_number(2);


end

oneeqn(name,LHS_number,LHS_cause,RHS_number,RHS_cause,cr,args,eqnfile);




 












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% Flow on port 1 is always zero
   fprintf(eqnfile, '%s := 0;\n', ...
      varname(name,bond_number(1), -1));
  
  
outcause = 1;
incause = 1;

if e_2 == -1 				% Unicausal: e_2 := e_1
  outbond = bond_number(2);
  inbond = bond_number(1);
  outport = 2;
  inport = 1;
else 	                                % Bicausal: e_1 := e_2      
  outbond = bond_number(1);
  inbond = bond_number(2);
  outport = 1;
  inport = 2;
end


eqn =  equation(name,cr,args,outbond,outcause,outport, ...
                             inbond,incause,inport);
fprintf(eqnfile, '%s',eqn);

			  
			  
			  




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