MATLAB: Where can I find more information on the MATLAB and Simulink ODE solvers

informationMATLABodesimulinksolvers

I would like to know more about the algorithms used by the ODE solvers in MATLAB and Simulink.

Best Answer

The following PDF document provides detailed information on the algorithms used for the ODE solvers:

https://www.mathworks.com/help/pdf_doc/otherdocs/ode_suite.pdf

Related Solutions

MATLAB: Error using ODE solvers

The resulting trajectories will differ, when:

the ODE is stiff and you use a non-stiff solver,
the solution is not stable - then tiny deviations caused by the different integration schemes are amplified.

So at first determine the stiffness, then calculate the sensitivity matrix by varying the inputs and comparing the outputs.

Btw, if speed matters, -1e4 is faster than -10^4.

MATLAB: Ode45 where odefun requires more parameters

I’m not exactly certain what you’re actually asking, since my interpretation of your question is covered in the ode45 documentation. You haven’t listed the code for your ‘odefun’, or described what you want to do, so I’m guessing here.

If I understand correctly, what you want to do is a common way of passing extra parameters to your ODE function.

To use it with ode45, you only pass the ODE solver the ‘t’ and ‘y’ variables:

[t,y] = ode45(@(t,y) odefun(t,y,a,b,c), tspan, ic);

Note that ‘a’, ‘b’, and ‘c’ have to exist in your workspace.

Best Answer

Related Solutions

MATLAB: Error using ODE solvers

MATLAB: Ode45 where odefun requires more parameters

Related Question