Trouble while generating a 3D custom component in Simscape Environment.

2021 8 30
1 个回答
回答已采纳
更新时间：2021 9 3
3 次查看（30 天）

0 个投票

I'm facing issues while trying to generate my custom simscape component
  1. The declarations, parameters, nodes definitions etc as a prerequisites required are correctly fulfilled.
  2. I'm trying to make a 3D custom simscape component and hence using a tablelookup in one of muy equations.
  3. The data set of input values are defined using the Link provided by Mathworks.
  4. The input vectors are defined as provided in the figure below. I'm also providing the array and its sizes.
  5. The equation for fd i.e. output function is as provided below
  6. While running <ssc_build('MyComponent')> I'm getting the error as shown below
What is that I've done incorrectly and where I need to make changes in order to make the Simscape model generate MyComponent effectively

请先登录，再回答此问题。

 采纳的回答

Joel Van Sickel
Joel Van Sickel 2021-9-3
编辑：Joel Van Sickel 2021-9-3

0 个投票

Hello Mihir,
I wonder if your problem lies in how you are declaring/setting SOC, T, or Cycle. I copied your text to make a test part and everything else seems to work: You should probably share your entire part definition when looking for help.
component testPart
nodes
p = foundation.electrical.electrical; % +:left
n = foundation.electrical.electrical; % -:right
end
parameters (Size=variable)
R_LUT = {ones(5,3,9),'Ohm'};
SOC_LUT = {[0 0.1 0.5 0.9 1], '1'};
Temp_LUT = {[273.15 298.13 313.13],'K'};
Cycle_LUT = {[1 50 100 150 200 250 300 350 400],'1'};
end
equations
R == tablelookup(SOC_LUT,Temp_LUT,Cycle_LUT,R_LUT,{0.1,'1'},{273.15,'K'},{50,'1'},...
interpolation=linear,extrapolation=nearest);
v == i*R;
end
variables
i = { 0, 'A' }; % Current
v = { 0, 'V' }; % Voltage
R = { 1, 'Ohm'}; % Resistance
end
branches
i : p.i -> n.i;
end
end

3 个评论
显示 1更早的评论 隐藏 1更早的评论

MIHIR GAGLANI
MIHIR GAGLANI 2021-9-3
Hi Joel Van Sickel,
As you mentioned the ssc files doesn't had such of an issue. This is when I commented some of the lines in the matlab script. Can you explain the impact of the commented part that caused the ssc_build function to not build a custom model. The script is as follows
component Resistance_LUT
nodes
p = foundation.electrical.electrical; % +:left
n = foundation.electrical.electrical; % -:right
end
inputs
T = {293.15,'K'}; % T:left
SOC = {1,'1'}; % SOC:left
Cycle= {1,'1'}; % Cycle No:left
end
outputs
pow = {0,'W'}; % POW:right
end
parameters (Size=variable)
R_LUT = {1e-3*ones(5,9,3),'Ohm'}; % R_table (SoC,T,Cycle.No)
SOC_LUT = {[0 0.1 0.5 0.9 1],'1'}; % SoC
Cycle_LUT ={[1 50 100 150 200 250 300 350 400],'1'}; % Cycle.No
Temp_LUT = {[273.15 298.13 313.13],'K'}; % T
end
variables(Access=private)
i = { 0, 'A' }; % Current
v = { 0, 'V' }; % Voltage
end
% function setup %#simple
% % Check parameter values
% if any(any(value(R_LUT,'Ohm')<=0))
% pm_error('simscape:GreaterThanZero','Matrix of resistance values, R(SOC,T)');
% end
% if any(value(SOC_LUT,'1')<0)
% pm_error('simscape:GreaterThanOrEqualToZero','State of charge (SOC) breakpoints');
% end
% if any(value(Temp_LUT,'K')<0)
% pm_error('simscape:GreaterThanOrEqualToZero','Temperature (T) breakpoints');
% end
% if any(value(Cycle_LUT,'1')<0)
% pm_error('simscape:GreaterThanOrEqualToZero','Cycle (No) breakpoints');
% end
% end
branches
i : p.i -> n.i;
end
equations
v == p.v - n.v;
let
% Perform the table lookup
R = tablelookup(SOC_LUT,Cycle_LUT,Temp_LUT,R_LUT,SOC,Cycle,T,...
interpolation=linear,extrapolation=nearest)
in
% Electrical Equations
v == i*R;
pow == v*i;
end
end
end
Joel Van Sickel
Joel Van Sickel 2021-9-3
you need a third any() function for your Resistance lookup table
MIHIR GAGLANI
MIHIR GAGLANI 2021-9-3
Thanks for the answer. Highly grateful for your response sir.

请先登录，再进行评论。

更多回答（0 个）

类别

在 帮助中心 和 File Exchange 中查找有关 Choose and Parameterize Blocks 的更多信息

产品

版本

R2021a

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by