Answered
MIMO ss2tf, how do I apply it to a 3x3 system?
You can try using just tf (if you are using one of the newer versions of Matlab) sys = ss(rand(6),rand(6,3),rand(3,6),0); %...

1 year ago | 0

Answered
Plotting circle using angle and radius
Next time, share your code so that we can debug your code. My guess is you angle are from +90 degrees to -90 degrees instead of ...

1 year ago | 0

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Forced step response of a signal
I recommend you look into <https://www.mathworks.com/help/control/ref/lsim.html lsim()> function, which is a lot more flexible t...

1 year ago | 0

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Answered
Index exceeds number of array elements (1)?
You only define V2(1) in your code and do not increase the size of the V2 variable. So I think you are missing a code in your fo...

1 year ago | 0

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Answered
How to subplot data in a given order?
Below modification will make the subplot in the order presented in the ch_order variable. ch_order = [6 4 2 1 3 5]; fo...

1 year ago | 0

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Answered
how can i find Open loop Transfer Function from Closed loop Transfer Function
From the basics of control theory you should know that for a given system G(s), the closed loop transfer function with unity fe...

1 year ago | 2

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Steady state doesn't appear in step response plot
The bad_sys works if you call the step function with; step(minreal(bad_sys/(1+bad_sys))) I am not sure about the exact r...

1 year ago | 0

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Answered
Saving output of for loop in array
There are some mistakes and unclear parts in your code. However, using your code, you can save it as; Pload = linspace (1,2...

1 year ago | 0

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Find the frequency at maximum value in pwelch function
You can obtain the frequency and power vectors from pwelch function. Example; fs = 1e3; t = 0:1/fs:1-1/fs; x = sin(2*...

1 year ago | 0

Answered
plot for x^2+y^2==3*x*y^2, x^3-x^2==y^2-y in matlab
syms x y real eq1 = x^2+y^2==3*x*y^2; eq2 = x^3-x^2==y^2-y; figure(1) ezplot(eq1) figure(2) ezplot(eq2) ...

1 year ago | 0

Answered
Plotting FFT of several data sets (signals) of same length, in the same graph
y = [] just makes y an empty matrix. It is not a necessary code. I include it in the off chance that you had a variable named y ...

1 year ago | 0

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Listing possible combinations of integers, given constraints (Gear Ratio Related)
One possibility is using an optimization. Here is a simple code for it using OPTI toolbox; clear all,clc % round() is...

1 year ago | 0

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Count two columns with corresponding data
One thing you can do is (assuming you have newer versions of matlab); A = rand(10,2); % the data a1 = A(A(:,1)<0.3,:); ...

1 year ago | 0

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Damping Factor and natural frequency out of time response data
If this is impulse response, you can get the natural frequency by simply finding the time difference between each peak. Invertin...

1 year ago | 1

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Interpolate between two signals in Simulink
Here is how linear interpolation works; y1 = 10; % known flow rate for 47500 ft y0 = 2; % known flow rate for 23000 ft...

1 year ago | 0

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Plotting FFT of several data sets (signals) of same length, in the same graph
You put all of the signals you want in a matrix (each column is a different partition of the signal); data = rand(60000,1)...

1 year ago | 0

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Answered
ODE45 not updating a variable of nonlinear 2nd order diff.eq system
The reason is simple. Your dxdt(3) is always equal to 0. You do not have an equation for dxdt(3) in your function other than the...

1 year ago | 1

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Answered
How can i measure Angle in 3-D?
Check out this <http://portal.tpu.ru:7777/SHARED/k/KONVAL/Sites/English_sites/G/l_Angle_f.htm link> which has the answer.

1 year ago | 0

Answered
Eulers Method Returning an Answer close but not exactly correct
The reason is simple. The time in your code start from 1 where as online calculators start from 0. If you adjusted your equat...

1 year ago | 0

Answered
How to conditionally solve two ODEs simultaneously using 'if-else' ?
ode45 does not check its values between start and end time. That is why you need to write your own solver or include the ifelse ...

1 year ago | 1

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Answered
How to solve the following System of first order differential equations using ode45?please help
First you create your function that outputs derivative of q when time and q are given to it. function qd = asd(t,q) k1...

1 year ago | 1

Answered
Can I issue a command to see when my license expires?
<https://www.mathworks.com/matlabcentral/answers/302548-how-can-i-check-the-expiration-date-of-my-matlab-license Check this answ...

1 year ago | 0

Answered
mod(a,b) floating-point rounding error
x(3,121) is not exactly 0.2. It is slightly less than 0.2. That is why when Matlabs mod() function does its algorithm, which is;...

1 year ago | 0

Answered
Unable to perform assignment because the size of the left side is 1-by-1 and the size of the right side is 11-by-11.
Here is the problem; DpiE(i,j)=DPiIX/DtX Both DPiTX and DTX are 11x1 vectors. When you divide 11x1 with 11x1 Matlab thin...

1 year ago | 0

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MATLAB Being Helpful hah:
What is the question? I assume the question is why the answers are different. Answer is simple 10e-12 is not equal 10^-1...

1 year ago | 1

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Answered
How to extract the exponential term?
Here is one way; floor(log10(1.2346e+02))

1 year ago | 0

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Answered
I want to make a programming function in which I want to take input any mathematical function like f(x)=sin(x)+x^2. then I take a input x and my function return a value of f(x).but i don't know how can i do?
Here is a simple Matlab script; f_math = @(x) sin(x)+x.^2;% mathematical function, notice the element wise operation fun...

1 year ago | 0

Answered
How to force zero or positive entries in matrix when solving LMI?
You can simply add another constraint to the LMI to impose the constraint. For instance, assume decision variables are x and ...

1 year ago | 0

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Answered
How to create for loop for the below case
First of all, your code does not look like it is in order. You define C after you calculate Q? You do not use X in any calculati...

1 year ago | 0

Answered
How to feed timeseries data to parameter
One way is to define the parameter as a signal (if the parameter is in the gain inside a gain block, change the gain block to pr...

1 year ago | 0

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