Is there any way to calculate the eigenvalues of Jacobian matrix in any non-stiff ODE solver like ode113?

11 次查看（过去 30 天）

显示更早的评论

Hossein 2015-6-30

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/225859-is-there-any-way-to-calculate-the-eigenvalues-of-jacobian-matrix-in-any-non-stiff-ode-solver-like-od

评论： Torsten 2015-6-30

Hi everybody,

Is there any way to calculate the eigenvalues of Jacobian matrix in any non-stiff ODE solver like ode113?

many thanks in advance.

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。

回答（1 个）

Torsten 2015-6-30

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/225859-is-there-any-way-to-calculate-the-eigenvalues-of-jacobian-matrix-in-any-non-stiff-ode-solver-like-od#answer_184512

Create the Jacobian and call MATLAB's eig.

Or what's the difficulty you encounter ?

Best wishes

Torsten.

3 个评论
显示 1更早的评论隐藏 1更早的评论

Torsten 2015-6-30

Usually the Jacobian varies with time. When do you want to form it and compute the eigenvalues ? Once at the start and at the end of the simulation ?

In any case: You will have to write your own code to calculate the Jacobian.

Best wishes

Torsten.

Torsten 2015-6-30

Or you may use jacobiantest from

http://www.mathworks.com/matlabcentral/fileexchange/13490-adaptive-robust-numerical-differentiation

Best wishes

Torsten.

请先登录，再进行评论。

请先登录，再回答此问题。

类别

MATLAB Mathematics Numerical Integration and Differential Equations Ordinary Differential Equations

在 Help Center 和 File Exchange 中查找有关 Ordinary Differential Equations 的更多信息

标签

Community Treasure Hunt

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

Translated by