to remove the error in this line of code "[T,Y] = ode45(@(t,y) intgrl(t,y​,u),tspan,​yo,options​);"

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Muhammad Umer
Muhammad Umer 2015-8-31
评论： Walter Roberson 2015-8-31
i am trying to solve the optimization problem by using function but i am getting an error in it.
function f=bench_func(x)
[ps,d]=size(x);
% The optimal control of a non-linear stirred tank reactor.
tol=1.0e-01;
tspan=[0 0.78];
yo =[0.09 0.09]';
u=x; %u should be passed here.
options = odeset('RelTol',tol);
[T,Y] = ode45(@(t,y) intgrl(t,y,u),tspan,yo,options);
f=sum(sum(Y.^2,2)+(0.1)*(u).*(u));
error
Error in bench_func (line 141)
[T,Y] = ode45(@(t,y) intgrl(t,y,u),tspan,yo,options);
please help me to solve this error.

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Walter Roberson
Walter Roberson 2015-8-31
It appears that intgrl might be http://www.mathworks.com/matlabcentral/fileexchange/2268-projects-for-scientists-and-engineers/content/penland/intgrl.m from the File Exchange. Have you installed that package and added it to your MATLAB path?
We need the full error message that you received.
  2 个评论
Muhammad Umer
Muhammad Umer 2015-8-31
编辑：Muhammad Umer 2015-8-31
thanks for your response. i have not installed this "intgrl" package. how can i install this package to run this code?
Walter Roberson
Walter Roberson 2015-8-31
Go to the above link and on the upper right side of the page click on Download ZIP. Save that file and unzip the contents into a user directory. Then go into MATLAB and use pathtool to add that directory to the MATLAB path.

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