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 ...

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...

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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...

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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...

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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...

Steady state doesn't appear in step response plot

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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年以上 前 | 0

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年以上 前 | 0

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年以上 前 | 0

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年以上 前 | 0

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年以上 前 | 0

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年以上 前 | 0

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年以上 前 | 0

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年以上 前 | 0

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年以上 前 | 0

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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年以上 前 | 1

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How can i measure Angle in 3-D?

1年以上 前 | 0

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年以上 前 | 0

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年以上 前 | 1

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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年以上 前 | 1

Can I issue a command to see when my license expires?

1年以上 前 | 0

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年以上 前 | 0

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年以上 前 | 0

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年以上 前 | 1

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

1年以上 前 | 0

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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年以上 前 | 0

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年以上 前 | 0

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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年以上 前 | 0

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年以上 前 | 0

returning values of a matrix between two values
desiredData = data(:,event_samples(1):event_samples(end))

1年以上 前 | 0