minimize the error between calculated values and experimental results
16 次查看(过去 30 天)
显示 更早的评论
Hello, I am writing the following code to minimize the error between calculated values and experimental results:
K=[1 2 2.8 3.3 3.5 3.6]; %some data to test
v = sym('v',[1 2]);
a = v(1); b = v(2);
e=[1 2 3 4 5 6]
eo=2
for i=1:1:6
D(i)=@(v)a*(e(i)-eo)^b
E(i)=e(i)*(1-D(i));
R(i)=(K(i)-E(i))^2;
end
RM=0
for i=1:1:6
RM=RM+R(i)
end
RMS=(RM)^(1/2)
v = [0.12 2];
c=fminsearch(RMS,v)
Its showing error. Can you please help to solve the issue.
0 个评论
采纳的回答
Guru Mohanty
2020-4-15
Hi, I understand you are trying to minimize error for given set of data. The error in your code is due the fact that the function fminsearch takes function handle as input, instead of sym. First you need to convert the ‘RMS’ to function handle using matlabFunction and then compute the minimum. Here is the modified code for it.
clear all;
clc;
K=[1 2 2.8 3.3 3.5 3.6]; %some data to test
v = sym('v',[1 2]);
a = v(1); b = v(2);
e=[1 2 3 4 5 6];
eo=2;
RM=0;
for i=1:1:6
D(i)=a*(e(i)-eo)^b;
E(i)=e(i)*(1-D(i));
R(i)=(K(i)-E(i))^2;
RM=RM+R(i);
end
RMS=(RM)^(1/2);
RMS=matlabFunction(RMS,'Vars',{[v(1),v(2)]});
v = [0.12 2];
c = fminsearch(RMS, v);
disp(c);
更多回答(0 个)
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Assumptions 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!