Alexander Babin
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Awarded to Alexander Babin on 15 Feb 2022
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Feeds
Question
How to obtain numerical values of displacement due to deformation?
Hi, I am solving a simple FEA problem for a rod, see below: The rod is bent due to a force appled to the top vertex, the bott...
ungefär 3 år ago | 0 answers | 0
0
answersQuestion
Structural Optimization Workflow in Matlab
Dear friends! My question is aimed at people who deal with optimization problems coupled with FEA and use Matlab for that, and ...
ungefär 3 år ago | 0 answers | 0
0
answersQuestion
Extra faces in imported geometry
Hi, every one, I am trying to import a part I designed in Autodesk Inventor, the .stl file attached, but there are some extra fa...
ungefär 3 år ago | 1 answer | 0
1
answerQuestion
Input to Output ghost elements
Dear friends, it is the strangest thing I have seen and the weirdest question to ask. Consider the following model: The input...
ungefär 3 år ago | 0 answers | 0
0
answersQuestion
Double to Logical convertion in Simulink
Dear friends! So i have an array of boolean like this: [0 1 0 1 1 1 1 0 0 1 0] If you plot it in Matlab, ...
ungefär 3 år ago | 1 answer | 0
1
answerQuestion
Code generation with external variables
Dear friends! I am not sure if the word 'external' in the question is correct, but here is what i am talking about: The progra...
ungefär 3 år ago | 1 answer | 0
1
answerSubmitted
Normalization and Linear Regression of Data
A simple piece of code including a function for linear regression lin_fit(...) for data points X and y
mer än 3 år ago | 1 download |
Solved
Mandelbrot Numbers
The <http://en.wikipedia.org/wiki/Mandelbrot_set Mandelbrot Set> is built around a simple iterative equation. z(1) = c z...
mer än 3 år ago
Question
Code generation for stm32f4 discovery results in an empty main.c
Hello to everyone, I am trying to connect my stm32f4 discovery board to simulink to generate code and run in on the board via ...
mer än 3 år ago | 0 answers | 0
0
answersSolved
Rescale Scores
Each column (except last) of matrix |X| contains students' scores in a course assignment or a test. The last column has a weight...
mer än 3 år ago
Solved
Longest run of consecutive numbers
Given a vector a, find the number(s) that is/are repeated consecutively most often. For example, if you have a = [1 2 2 2 1 ...
mer än 3 år ago
Solved
Crop an Image
A grayscale image is represented as a matrix in MATLAB. Each matrix element represents a pixel in the image. An element value re...
mer än 3 år ago
Solved
Solve a System of Linear Equations
*Example*: If a system of linear equations in _x₁_ and _x₂_ is: 2 _x₁_ + _x₂_ = 2 _x₁...
mer än 3 år ago
Solved
Calculate a Damped Sinusoid
The equation of a damped sinusoid can be written as |y = A.ⅇ^(-λt)*cos(2πft)| where |A|, |λ|, and |f| ...
mer än 3 år ago
Solved
Verify Law of Large Numbers
If a large number of fair N-sided dice are rolled, the average of the simulated rolls is likely to be close to the mean of 1,2,....
mer än 3 år ago
Solved
Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...
mer än 3 år ago
Question
Error Bus signal cannot be found in the Input bus signal
Dear friends, please, look the schematic below and tell me, why even though DX returns a proper vector, it cannout be found in ...
mer än 3 år ago | 0 answers | 0
0
answersQuestion
How to set up a Simulink model to use external clock on my Arduino Mega 2560?
Hi, all, I have an Arduino board all configured, two potentiometers connected to it at the same time, pins A0 and A1, however, s...
mer än 3 år ago | 0 answers | 0
0
answersLQI Control input
hi, I hope, it is still relevant: to compute u(k) = K*x(k)
mer än 3 år ago | 0
Question
How does linearization algorith work in Linearization Manager?
Dear friends! My question is more out of curiosity, I suspect, that since I see my simulink model run a few times, the manager ...
mer än 3 år ago | 0 answers | 0
0
answersQuestion
What do Y axes mean in Sensitivity Analysis results?
Hi, I have the following results in Sensitivity analysis toolbox, see attached figure. I have specified step response envelope...
nästan 4 år ago | 0 answers | 0
0
answersQuestion
How to export a figure with editable axes from Sensitivity Analysis toolbox?
Hi, I would like to export some plots from sensitivity analysis toolbox to my paper, I managed to export requirements plots for ...
nästan 4 år ago | 0 answers | 0
0
answersStability margins on Nyquist plot for MIMO control systems
I figured it out. You could extract each input-ouput transfer function via g=tf(G.Numerator(i,j),G.Denominator(i,j)) where g is ...
nästan 4 år ago | 0
| accepted
Question
Stability margins on Nyquist plot for MIMO control systems
Dear Friends! I hope you are all doing fine in these strange times! I have a question regarding the stability margins for a MI...
nästan 4 år ago | 1 answer | 0
1
answerQuestion
Discrete-time Derivative
Dear friends! I am simulating a system with an ADC which acquires signals from two sensors at some N Hz rate, converting a cont...
ungefär 4 år ago | 0 answers | 0
0
answersQuestion
why linearisation of a closed-loop systems results in an infinite step response?
Dear friends! Please, take a look at the system below with open loop inputs and outputs configered this way, the following i...
ungefär 4 år ago | 0 answers | 0
0
answersQuestion
Step response of a closed-loop system
Dear friends, i need to determine the stability of a system that consists of a PI controller, a servovalve and a thrust bearing...
ungefär 4 år ago | 1 answer | 0
1
answerQuestion
How to use methods of the class in the constructor of this class?
Dear friends! I am quite new with Matlab and especially with OOP in it. I have a question regarding object construction: the t...
mer än 4 år ago | 1 answer | 0
1
answer
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