Why am I getting error : "Line: 21 Column: 1 Illegal use of reserved keyword "variables".

Question

KAJAL KUMARI 2021-7-26

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/885804-why-am-i-getting-error-line-21-column-1-illegal-use-of-reserved-keyword-variables

回答： Marcel Kreuzberg 2021-7-27

I am trying to model a Tablet coater thermodynamic model to account for the change in thermodynamic properties with temperature of moist air and thermal liquid (water). For this, I want to make a costumized block which will solve the balanced equation relating inlet temperature and exhaust temp. i.e., Taout = (Mai*Cpa*Tai+Xw*Mcoat*Cpw*Tcoat-Xw*Mcoat*Hlv+Xorg*Mcoat*Cporg*Tcoat-Xorg*Mcoat*Hvorg+HLF*Trt)/(Mai*Cpa+Xw*Mcoat*Cpw+Xorg*Mcoat*Cporg +HLF)

I am new to simscape. Please help me in solving this error.

component Tablet_coater
% This is a thermodynamic model of tablet film coater
% which gives the relationship between inlet temperature and exhaust 
%temperature
parameters
   % Add parameters here
    HLF = { 150 , 'cal/min*C' }; % Heat Loss Factor 
    Trt = { 25 , 'degree celcius'}; % Ambient temperature 
end
nodes
    b = foundation.moist_air.moit_air; % b:left
    c = foundation.thermal_liquid.thermal_liquid; %c:left
end
outputs
    Taout = { 0 , 'deg'}; %exhaust temperature:right
    
variables
    Tin_b = {value={0,'deg'},imin={0,'deg'},imax={100,'deg'}};
    Tcoat_c = {value={0,'deg'},imin={0,'deg'},imax={100,'deg'}};
end
variables (balancing = true)
         Mai_b = { 0 , 'g/min' };
         Cpa_b = { 0 , 'cal/g*C' };
         Xw_c = 0;
         Xorg_c = 0;
         Cporg_c = { 0 , 'cal/g*C' };
         Cpw_c = {0 , 'cal/g*C' };
         Mcoat_c = { 0 , 'g/min' };
         Hlv_c = { 0 , 'cal/g' };
         Hvorg_c = {0 , 'cal/min*C' };
end
branches
    Mai_b : b.Mai -> *;
    Cpa_b : b.Cpa -> *;
    Xw_c : c.Xw -> *;
    Xorg_c : c.Xorg -> *;
    Cporg_c : c.Cporg -> *;
    Cpw_c : c.Cpw -> *;
    Mcoat_c : c.Mcoat -> *;
    Hlv_c : c.Hlv -> *;
    Hvorg_c : c.Hvorg -> *;
    
end
equations
   % Add equations here
    
     
    Taout == fcn(Mai,Cpa,Xw,Xorg,Cporg,Cpw,Mcoat,Tcoat,Tai,Hlv,Hvorg);
    
    Taout == (Mai*Cpa*Tai+Xw*Mcoat*Cpw*Tcoat-Xw*Mcoat*Hlv+Xorg*Mcoat*Cporg*Tcoat-Xorg*Mcoat*Hvorg+HLF*Trt)/(Mai*Cpa+Xw*Mcoat*Cpw+Xorg*Mcoat*Cporg +HLF);
end
end