Community Profile # winkmal

Last seen: Today 2018 以来アクティブ

Programming Languages:
Python, MATLAB
Spoken Languages:
English, German, Spanish

#### Statistics

• • • • バッジを表示

#### Content Feed

How 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...

1年以上 前 | 0

| 採用済み

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...

1年以上 前 | 0

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...

### 1

Time dependent parameters in ode
Here is MathWorks official answer, and the corresponding paragraph from ode45 documentation. Note that interp1 does linear inte...

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...

### 1

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...

2年以上 前 | 0 件の回答 | 0

### 0

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...

3年弱 前 | 0 件の回答 | 0

### 0

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...

3年弱 前 | 1 件の回答 | 0

### 1

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...

3年弱 前 | 1 件の回答 | 0

### 1

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). ...

3年以上 前 | 0 件の回答 | 0

### 0

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. ...

3年以上 前 | 0 件の回答 | 0

### 0

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...

3年以上 前 | 3 件の回答 | 0