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Sulaymon Eshkabilov


Last seen: 1 day ago Active since 2011

research interests: vibrations, optimal control, system modeling and simulation, mechatronics... coding

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Answered
Solving coupled ODEs via ode45
If your equation is implicit then, ode15i might be the tool to use. https://www.mathworks.com/help/matlab/ref/ode15i.html

1 month ago | 0

Answered
length error don't know why
Check this in the command window: which length If by mistake any variable or M-file was called by length, the variable can be...

1 month ago | 0

Answered
Error using imread>get_full_filename (line 566) File "gg(21).jpg" does not exist. Error in imread (line 375) fullname = get_full_filename(filename);
You can add the path to the directory where your images are located using addpath(), e.g.: addpath('C:\Users\new\Testing')

2 months ago | 0

Answered
Generate and acquire signals with a DT9857E box using Matlab
It is all about DAQ DT9857E issue. Once we had also the same issue - a kind of exponential decay. So far, I remember what we ...

2 months ago | 0

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Answered
help with wavelet analysis - wcoherence plot
If understood your question correctly, follow this doc: https://www.mathworks.com/help/wavelet/ref/wcoherence.html#d126e131143 ...

2 months ago | 0

Answered
How to move the Yaxis exponent outside
Here is one example how to get it done: % Sample data for plot display x = linspace(0, 2*pi, 100); y = 1e6 * sin(x); %% De...

2 months ago | 1

Answered
how to find point from Table data in Simulink?
Do the followings: Feed the temperature and density values as inputs to the lookup table block The output of the lookup tab...

2 months ago | 1

Answered
Ray tracing in antenna chamber
Have you checked out this documentation: https://www.mathworks.com/help/comm/ref/rfprop.raytracing.html?s_tid=answers_rc2-1_p4_...

2 months ago | 0

Answered
Is this a logical Error in Matlab ? exp (pi*i*6) = 1.000000000000000 - 0.000000000000001i. WHY an i component ?, should just be 1
It is all about a display format: format short exp(pi*i*6) % compare with this: cos(6*pi)+1i*sin(6*pi) % Compare this: fo...

2 months ago | 0

Answered
Multiple loops to build structure?
It can be done somewhat what like this one: GN = {'Group 1:'; 'Group 2:'; 'Group 3:'}; NA = {'North'; 'East'; 'West']; for ...

2 months ago | 0

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Answered
How do I graphic
The given inequality does not have explicit solution. Therefore, by ignoring analytical constraints, these can be obtained: sym...

2 months ago | 0

Answered
Starting with the ramp signal r(t) and unit step signal u(t) given below, please write the codes to plot the following transformed versions (a-f):
t=-10:10; figure plot(t,t); grid on xlabel('Samples') ylabel('Amplitude') title('Ramp') figure t2=[zeros(1,100), on...

2 months ago | 0

Answered
unable to connect blocks in Simulink
Use Simulink-PS converter block: https://www.mathworks.com/help/simscape/ref/simulinkpsconverter.html

2 months ago | 0

| accepted

Answered
how to plot two m.file in one plot
use plot(x, y), e.g.: x = [-5:5;2*(-5:5); 3*(-5:5)]; y = [3*x.^2+3*x-3; -5*x.^2+5*x-15; -2*x.^2-3*x-13;]; plot(x(1,:),y(1,:),...

2 months ago | 0

Answered
Inverse FFT of a matrix
Just looking at your attached figure, it is clear along x axis is time. inverse FFT gives back time domain data from freq domain...

2 months ago | 0

Answered
Why can't I run my code? (tfest function)
Here it is running ok: x = readtable('data_thermal_pulse.txt'); time = x.Var1; T1 = x.Var2-x.Var2(1); input = x.Var4; Ts = ...

2 months ago | 0

Answered
Why does this function not work for decimals?
Here is the corrected answer (Note abs(x)<=1): % x = input("Please enter the value of x (in radians): "); % Here "input" prom...

2 months ago | 0

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Answered
How to find an area below the curve follwed by x and y axis having two different parameters?
That would be something like this: DATA = [53 100; 26.5 88.5; 9.5 64.95; 4.75 46.85; 2.36 25.34; 0.85 23.14; 0.425 0;]; ...

2 months ago | 0

Answered
help understand the step size of the electrical engine dyno example
Click on Modeling Tab --> Model Explorer --> Base Workspace, and then you will see that the sampling time is 1E-5 in seconds. Se...

2 months ago | 0

Answered
How to randomly sample output times in Simbiology?
To randomly generate values using MEAN and STD values, normrnd() fcn can be used: MEAN_val = 15; % Mean in minutes STD_dev ...

2 months ago | 0

Answered
How to get rid of Noise in Simulink?
There are a few blocks can be used. E.g., Discrete Filter (Transfer Function), Discrete FIR Filter, etc., whcih can be found: Si...

2 months ago | 0

Answered
Matlab Plotting command problem
Even though you have not mentioned any error, there is a tiny point linked with hold on command. It needs to be followed at the ...

2 months ago | 0

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Answered
How to ignore special characters and retrieve the data prior to the character
Here is one possible solution, to get the data correctly from the data file: % Open the data file for reading FID = fopen('tem...

2 months ago | 0

Answered
Solve equations of motion containing matrices and partial derivatives
Your posted code has a few critical issues to be addressed before executing it. (1) epsilon_rp is undefined; (2) y(1) =4.3; bu...

2 months ago | 0

Answered
Summing two signals should result in zero, but doesn't
Note that the matlab's PRECISION is not ABSOLUTE. See this example of Pythogorian theorem: a = -pi:pi/100:pi; F = 1 - (sin(a)....

3 months ago | 0

Answered
how to convert a 3D surface into a 2D contour?
Note that it is clear from the colorbar scale (Figure 2 in your question) that there must be another operation before obtaining ...

3 months ago | 0

Answered
Error in resampling function
If you want to use fs = 5000 Hz, then the command syntax has to be resample(x_siganl, time, fs_new) This is how it should be don...

3 months ago | 0

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Answered
How to compute forces in global reference frame?
Presuming that you are also using some blocks from SimScape toolbox in the Simulink environment, here are some points to conside...

3 months ago | 0

Answered
How do I change the current directory in Simulink Onramp?
Even if you are working online, you can still go for "Save As" option (upper left corner) to select the directory where to save ...

3 months ago | 1

Answered
how to convert a 3D surface into a 2D contour?
This is how it can be done: H = openfig('ds2.fig'); % This is the extracted plot figure h = findobj(gca, 'Type', 'surfac...

3 months ago | 0

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