کد:
function [ret,x0,str,ts,xts]=COLAS_Nonlin(t,x,u,flag);
%COLAS_NONLIN is the M-file description of the SIMULINK system named COLAS_NONLIN.
% The block-diagram can be displayed by typing: COLAS_NONLIN.
%
% SYS=COLAS_NONLIN(T,X,U,FLAG) returns depending on FLAG certain
% system values given time point, T, current state vector, X,
% and input vector, U.
% FLAG is used to indicate the type of output to be returned in SYS.
%
% Setting FLAG=1 causes COLAS_NONLIN to return state derivatives, FLAG=2
% discrete states, FLAG=3 system outputs and FLAG=4 next sample
% time. For more information and other options see SFUNC.
%
% Calling COLAS_NONLIN with a FLAG of zero:
% [SIZES]=COLAS_NONLIN([],[],[],0), returns a vector, SIZES, which
% contains the sizes of the state vector and other parameters.
% SIZES(1) number of states
% SIZES(2) number of discrete states
% SIZES(3) number of outputs
% SIZES(4) number of inputs
% SIZES(5) number of roots (currently unsupported)
% SIZES(6) direct feedthrough flag
% SIZES(7) number of sample times
%
% For the definition of other parameters in SIZES, see SFUNC.
% See also, TRIM, LINMOD, LINSIM, EULER, RK23, RK45, ADAMS, GEAR.
% Note: This M-file is only used for saving graphical information;
% after the model is loaded into memory an internal model
% representation is used.
% the system will take on the name of this mfile:
sys = mfilename;
new_system(sys)
simver(1.3)
if (0 == (nargin + nargout))
set_param(sys,'Location',[303,71,1011,435])
open_system(sys)
end;
set_param(sys,'algorithm', 'RK-45')
set_param(sys,'Start time', '0.0')
set_param(sys,'Stop time', '50')
set_param(sys,'Min step size', '0.01')
set_param(sys,'Max step size', '1')
set_param(sys,'Relative error','1e-5')
set_param(sys,'Return vars', '')
set_param(sys,'AssignWideVectorLines','on');
add_block('built-in/Clock',[sys,'/','Clock'])
set_param([sys,'/','Clock'],...
'position',[85,10,105,30])
add_block('built-in/To Workspace',[sys,'/','time'])
set_param([sys,'/','time'],...
'mat-name','t',...
'position',[485,12,535,28])
add_block('built-in/Constant',[sys,'/','F'])
set_param([sys,'/','F'],...
'orientation',1,...
'Value','1.01',...
'position',[179,65,211,80])
add_block('built-in/Constant',[sys,'/','zF'])
set_param([sys,'/','zF'],...
'orientation',1,...
'Value','0.5',...
'position',[122,65,148,80])
add_block('built-in/Constant',[sys,'/','V'])
set_param([sys,'/','V'],...
'Value','3.2063',...
'position',[75,150,130,170])
add_block('built-in/Constant',[sys,'/','D'])
set_param([sys,'/','D'],...
'Value','0.5',...
'position',[75,185,130,205])
add_block('built-in/Constant',[sys,'/','B'])
set_param([sys,'/','B'],...
'Value','0.5',...
'position',[75,220,130,240])
add_block('built-in/Demux',[sys,'/','Demux'])
set_param([sys,'/','Demux'],...
'outputs','[1,1,1,1,41]',...
'position',[380,116,435,184])
add_block('built-in/To Workspace',[sys,'/','Comp.'])
set_param([sys,'/','Comp.'],...
'mat-name','Comp',...
'position',[495,237,545,253])
add_block('built-in/To Workspace',[sys,'/','y_D'])
set_param([sys,'/','y_D'],...
'mat-name','y1',...
'position',[495,112,545,128])
add_block('built-in/To Workspace',[sys,'/','x_B'])
set_param([sys,'/','x_B'],...
'mat-name','y2',...
'position',[495,142,545,158])
add_block('built-in/To Workspace',[sys,'/','M_D'])
set_param([sys,'/','M_D'],...
'mat-name','y3',...
'position',[495,172,545,188])
add_block('built-in/To Workspace',[sys,'/','M_B'])
set_param([sys,'/','M_B'],...
'mat-name','y4',...
'position',[495,202,545,218])
% Subsystem 'Graph'.
new_system([sys,'/','Graph'])
set_param([sys,'/','Graph'],'Location',[0,59,274,252])
add_block('built-in/Inport',[sys,'/','Graph/x'])
set_param([sys,'/','Graph/x'],...
'position',[65,55,85,75])
add_block('built-in/S-Function',[sys,'/',['Graph/S-function',13,'M-file which plots',13,'lines',13,'']])
set_param([sys,'/',['Graph/S-function',13,'M-file which plots',13,'lines',13,'']],...
'function name','sfuny',...
'parameters','ax, color,dt',...
'position',[130,55,180,75])
add_line([sys,'/','Graph'],[90,65;125,65])
set_param([sys,'/','Graph'],...
'Mask Display','plot(0,0,100,100,[90,10,10,10,90,90,10],[65,65,90,40,40,90,90],[90,78,69,54,40,31,25,10],[77,60,48,46,56,75,81,84])',...
'Mask Type','Graph scope.')
set_param([sys,'/','Graph'],...
'Mask Dialogue','Graph scope using MATLAB graph window.\nEnter plotting ranges and line type.|Time range:|y-min:|y-max:|Line type (rgbw-:*). Seperate each plot by ''/'':')
set_param([sys,'/','Graph'],...
'Mask Translate','color = @4; ax = [0, @1, @2, @3]; dt = -1;')
set_param([sys,'/','Graph'],...
'Mask Help','This block plots to the MATLAB graph window and can be used as an improved version of the Scope block. Look at the m-file sfuny.m to see how it works. This block can take scalar or vector input signal.')
set_param([sys,'/','Graph'],...
'Mask Entries','50\/0.98\/1\/''y-/g--/c-./w:/m*/ro/b+''\/')
% Finished composite block 'Graph'.
set_param([sys,'/','Graph'],...
'position',[575,76,605,114])
add_block('built-in/Constant',[sys,'/','L'])
set_param([sys,'/','L'],...
'Value','2.7063',...
'position',[75,110,130,130])
add_block('built-in/S-Function',[sys,'/',['Distillation',13,'column',13,'(nonlinear)']])
set_param([sys,'/',['Distillation',13,'column',13,'(nonlinear)']],...
'function name','colas',...
'position',[290,117,360,183])
add_block('built-in/Mux',[sys,'/','Mux'])
set_param([sys,'/','Mux'],...
'inputs','7',...
'position',[230,116,270,184])
add_block('built-in/Constant',[sys,'/','qF'])
set_param([sys,'/','qF'],...
'orientation',1,...
'position',[229,65,261,80])
add_line(sys,[135,120;225,120])
add_line(sys,[135,195;175,195;175,140;225,140])
add_line(sys,[135,230;185,230;185,150;225,150])
add_line(sys,[440,120;490,120])
add_line(sys,[440,150;460,150;460,180;490,180])
add_line(sys,[440,165;450,165;450,210;490,210])
add_line(sys,[440,180;439,180;439,245;490,245])
add_line(sys,[195,85;195,100;165,100;165,160;225,160])
add_line(sys,[135,160;145,160;145,130;225,130])
add_line(sys,[135,85;135,100;155,100;155,170;225,170])
add_line(sys,[110,20;480,20])
add_line(sys,[365,150;375,150])
add_line(sys,[440,135;475,135;475,150;490,150])
add_line(sys,[275,150;285,150])
add_line(sys,[440,120;440,95;570,95])
add_line(sys,[245,85;245,105;205,105;205,180;225,180])
drawnow
% Return any arguments.
if (nargin | nargout)
% Must use feval here to access system in memory
if (nargin > 3)
if (flag == 0)
eval(['[ret,x0,str,ts,xts]=',sys,'(t,x,u,flag);'])
else
eval(['ret =', sys,'(t,x,u,flag);'])
end
else
[ret,x0,str,ts,xts] = feval(sys);
end
else
drawnow % Flash up the model and execute load callback
end