Loop in solve system of nonlinear equations

조회 수: 2 (최근 30일)
Krystian Fornal
Krystian Fornal 2019년 10월 17일
댓글: Krystian Fornal 2019년 10월 17일
I have a problem with loop "for" in Solve system of nonlinear equations. I can solve nonlinear equations like this:
R=68.4043297;
V = [teta1; teta2];
F = @(V) [R-(37.5*sqrt(3))+(75*cos(V(1)))-(75*cos(V(2))); 97.5+37.5+(75*sin(V(1))) - (54.4818+75*sin(V(2)))];
XYA= fsolve(F, InitialGuess, Options);
but I have to change parametr R.
R=45:0.1:95
How do it?

답변 (1개)

Wiley Mosley
Wiley Mosley 2019년 10월 17일
By calling the index of R in the for loop you should be able to save the XYA in an array so that you have the solutions for all values of R.
R=45:0.1:95;
for ii = 1:numel(R);
V = [teta1; teta2];
F = @(V) [R(ii)-(37.5*sqrt(3))+(75*cos(V(1)))-(75*cos(V(2))); 97.5+37.5+(75*sin(V(1))) - (54.4818+75*sin(V(2)))];
XYA(ii)= fsolve(F, InitialGuess, Options);
end
  댓글 수: 2
Krystian Fornal
Krystian Fornal 2019년 10월 17일
But I get this:
Unable to perform assignment because the left and right sides have a different number of elements.
Error in Untitled3 (line 5)
XYA(ii)= fsolve(F, InitialGuess, Options);
Krystian Fornal
Krystian Fornal 2019년 10월 17일
But now i've got a solution:
R=linspace(45,95,11);
for i=1:11
V = [teta1; teta2];
F = @(V) [R(1,i)-(37.5*sqrt(3))+(75*cos(V(1)))-(75*cos(V(2))); 97.5+37.5+(75*sin(V(1))) - (54.4818+75*sin(V(2)))];
InitialGuess = [2;2];
Options=optimset('Display','off');
XY(2:3,i)= fsolve(F, InitialGuess, Options);
XY(1,i)=R(1,i);
end

댓글을 달려면 로그인하십시오.

카테고리

Help CenterFile Exchange에서 Transfer Function Models에 대해 자세히 알아보기

제품

Community Treasure Hunt

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

Start Hunting!

Translated by