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Python, MATLAB
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Numerical Integration and Differential Equations, Modeling and Prediction, Renewable Energy
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Pregunta
How to precisely place textarrow?
Inside a plot, I want to place several textarrows to mark specific events on the timeline. However, their placement is not very ...
casi 2 años hace | 1 respuesta | 0
1
respuestaHow to handle discrete, non-periodic right-hand side of ODE in Matlab
Since this was inspired by the valuable comment of Walter Roberson to my original answer, I am posting this solution as a separa...
más de 4 años hace | 0
| aceptada
How to handle discrete, non-periodic right-hand side of ODE in Matlab
After some research, I've found MathWorks official answer, and the corresponding paragraph from ode45 documentation. Note that i...
más de 4 años hace | 0
Pregunta
How to get algebraic solution and symbolic Jacobian of this simple equation?
I am trying to simplify this set of algebraic equations. Then, I would like to have Matlab calculate the Jacobian for me. But it...
más de 4 años hace | 1 respuesta | 0
1
respuestaTime dependent parameters in ode
Here is MathWorks official answer, and the corresponding paragraph from ode45 documentation. Note that interp1 does linear inte...
casi 5 años hace | 0
Pregunta
How to use max inside Simulink Fcn block?
In my Simulink sheet, I have a Fcn block which does a very simple calculation from its input: u(36)/u(38)*u(39) Since the inpu...
casi 5 años hace | 1 respuesta | 0
1
respuestaPregunta
Why is nonlinear inequality constraint not respected by fmincon?
The following script uses fmincon for minimization and works as expected: % Feeding optimization over time, with algebraic mode...
más de 5 años hace | 0 respuestas | 0
0
respuestasPregunta
Why is optimization involving ODEs so much slower than with a purely algebraic objective function?
Consider this optimization script, which is a very much boiled down version of something I am currently working on: % Parameter...
más de 5 años hace | 0 respuestas | 0
0
respuestasPregunta
How to get only one or two output times from ODE solver?
I am programming a nonlinear optimization, during which an ODE is solved multiple times at each objective function call. So I wo...
más de 5 años hace | 1 respuesta | 0
1
respuestaPregunta
What is causing Invalid variable 'conjugate(B(t))' in Symbolic Math Toolbox?
While trying to solve a DAE system with Symbolic Math Toolbox, I keep getting the same error. Unfortunately, the error message d...
más de 5 años hace | 1 respuesta | 0
1
respuestaPregunta
Why do MINLP solvers have such a hard time with this simple problem?
I am trying to solve a global optimization problem, belonging to the category of MINLP (mixed-integer nonlinear programming). ...
alrededor de 6 años hace | 1 respuesta | 0
1
respuestaPregunta
How to dynamically manipulate input variables during simulation from within Simulink M-code S-function?
In Simulink, I am trying to setup the following problem: An ODE which right-hand side is depending on a discrete input value. ...
alrededor de 6 años hace | 0 respuestas | 0
0
respuestasPregunta
How to handle discrete, non-periodic right-hand side of ODE in Matlab
I am trying to migrate an existing Simulink simulation to pure Matlab, which is necessary for several reasons. It is a stiff sys...
más de 6 años hace | 3 respuestas | 0