How to check the complementary time-dependent term of differential equations.

Question

CT 2021-6-7

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/849785-how-to-check-the-complementary-time-dependent-term-of-differential-equations

评论： CT 2021-6-7

https://jp.mathworks.com/matlabcentral/answers/99007-

Is there any way to check how the time-dependent term ft in the following code is completed by interp1?

function [T1,Y1] = ode_param_sample1()   
TSPAN = [0 pi/2]; 
IC = 1;   
tv = linspace(0,pi/2,10);
ftv = sin(tv);   
[T1 Y1] = ode45(@myODE1, TSPAN, IC); 
    
     function dydt1 = myODE1(t1,y1) 
        ft = interp1(tv, ftv, t1,'spline');
        dydt1 = - ft *y1;                   
     end 
end

I want to check the ft in this code.

By checking, I mean I want to compare it with the original time-variant parameters, such as plotting it on a graph.

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

SALAH ALRABEEI 2021-6-7

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/849785-how-to-check-the-complementary-time-dependent-term-of-differential-equations#answer_718790

在 MATLAB Online 中打开

    % Try this
function [T1,Y1] = ode_param_sample1()   
TSPAN = [0 pi/2]; 
IC = 1;   
tv = linspace(0,pi/2,10);
ftv = sin(tv);   
ft = interp1(tv, ftv, T1,'spline');
plot(tv,ftv,'or',T1,ft,'b')