# Brendan Görres

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**Content Feed**

Question

Surface Roughness Metrology Tool according to ISO 25178

Hi everyone, I am looking for a Matlab Tool/Function that provides surface roughness values (Sa,Sz,W), out of an input vector t...

9 months ago | 0 answers | 0

### 0

answersQuestion

Plot range of values in a bar graph

I am looking to create a bar graph that outputs a certain range of values, for example the minimum to maximum temperature of a B...

1 year ago | 2 answers | 0

### 2

answersQuestion

Using for loop to extract data from a matrix

I am trying to etract certain data from a matrix into a single row vector with the length of the vector depending on the number ...

1 year ago | 1 answer | 0

### 1

answerQuestion

Import connected cell values into an array

Hey guys, I am trying to import certain data from a 1756x2 cell array "aParts" into a vector. The cell array contains element...

1 year ago | 0 answers | 0

### 0

answersQuestion

Why do I get same plotting results for different inputs?

Recently I am trying to solve a system of equations with ode15s. The goal is to calculate the Ascent trajectory of a Rocket with...

2 years ago | 0 answers | 0

### 0

answersQuestion

Solving Equations of motion with ode15s

Recently I am trying to solve a system of equations with ode15s. The goal is to calculate the Ascent trajectory of a Rocket with...

2 years ago | 0 answers | 0

### 0

answersQuestion

Proper set up of fmincon including ODEs

I am actually trying to understand how the fmincon function is used in a little more complex way(including solving ODE). So I th...

3 years ago | 0 answers | 0

### 0

answersQuestion

Too many Input arguments

I am trying to optimize the attached problem, but I always receive these errors Error using objfuntest>@(X)ODEtest(X,g0,Isp,thr...

3 years ago | 1 answer | 0

### 1

answerQuestion

Solve system of differential equations with embedded non differential equation

I have a system of 5 differential equations that I want to solve. The problem is that 2 of these equations contain a value alpha...

3 years ago | 1 answer | 0

### 1

answerQuestion

Solving 2nd order differential equation using ode45

I am trying to solve this equation x=0.5*x''*t^2; Initial guess x(0)=0;%starting point x''(0)=0;%starting acceleration So t...

3 years ago | 1 answer | 0

### 1

answerQuestion

Is there an Optimization Tool that returns a function?

Hey:) So this is my problem: I want to maximize the final mass of an ascending rocket into an orbit by controlling the traject...

3 years ago | 1 answer | 0

### 1

answerQuestion

Failure in initial nonlinear constraint function evaluation. FMINCON cannot continue.

Hey Guys, My goal is to optimize the EoM that I implied in the constraint file, so that the 5th EoM (dmdt) gets as low as possi...

3 years ago | 1 answer | 0

### 1

answerQuestion

How do I correctly use the Syntax of fmincon?

I am trying to optimize a flight path. I have the following equations of motions: dydt=(thrust*sin(alphat)/m*v)-gh*cos(y)-v*cos...

3 years ago | 1 answer | 0

### 1

answerQuestion

Which Optimizer should I use?

Currently I am working on a code that optimizes the flight path of an ascending rocket to a final orbit in terms of mass reducti...

3 years ago | 1 answer | 0

### 1

answerQuestion

Low Level Graphics Error

After running my code MatLab experiences a low Level Graphic Error. If I open the "opengl info" function Matlab says Software='f...

3 years ago | 1 answer | 0

### 1

answerQuestion

Solve differential equation Systems with ODE45

I want to solve a differental equation system with ODE45. close all;clc; %basic planet/moon Parametres% re=6378e3; ...

3 years ago | 2 answers | 0