Re: Question regarding ode45 solver

Lakshmi

2012 5 29

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更新时间：2021 8 20

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Hi, I have a question regarding ode45 solver. I have the following code:

function [t,y] = rigid(ip1,tau1)

odeFunction2 = @(t, y) myMainFunction(t, y,ip1,tau1);

[t, y] = ode45(odeFunction2, [0 1500], [0.0,0.0]);

function dydt = myMainFunction(t, y,ip1,tau1)

global N;

dydt = zeros(2,1); % a column vector

dydt(1:N) = (ip1.*heaviside(t-200).*heaviside(400-t)-y(1:N))/tau1 ;

end end

I use the following script to call the function-

global N;

N=2;

ip1=.1*rand(1);

tau1=50;

[T,Y] = rigid(ip1,tau1);

As you can see, this is a 2 dimensional system (with N=2). I would like to create a 2 dimensional array for the parameters ip1 and tau1 in the description of dydt(1:N) =... in function "rigid.m", such that both variables y(1) and y(2) have different parameters ip1 and tau1. Not sure how to implement this. I will appreciate any help in this regard.

Thanks, Lakshmi