Answered
How would I plot signal energy of a .wav file making sure that time is the value of the x-axis?
Hi Andrew, The energy in a signal is a single number, so it's not clear how one would plot that. The instantaneous power is a ...

3 years ago | 0

Answered
How to find total Steady-State Error due to reference and disturbance
Hi Vivianne, If this problem is to be attacked using the Final Value Theorem, we can proceed either numerically or symbolically...

3 years ago | 1

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Answered
How to change globaly "Sample Time" to milliseconds?
In the Simulink model, you can make the stop time whatever is desired. The simplest way is to just replace the 20.0 with whatev...

3 years ago | 0

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Simulink Matrix multiply error: unexpected scalar signal mismatch
That block mutiplies the inputs from top to bottom as if they are left to right. So that block is really doing xh * Kx, when y...

3 years ago | 1

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Answered
Frenquency shift between the value and plot
Hi Achraf, The signal p is intended to have frequency content at f1 and f2. lbd1 = 1053; f1 = 3e8/(lbd1*10^-9) and f2 = ...

3 years ago | 0

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Answered
I want to integrate a symbolic matrix numerically. How can I do it??
I don't think there's a function for numerically integrating an arrayvalued function of two variables. Here's a loop approach to...

3 years ago | 0

Answered
How do I get rid of the sinusoidal wave in my output waveform for fourier series sawtooth waveform?
Hi Chaileen, It looks like you're trying to use a summation like this: for n = 1:8 y2 = y2 + B(n)*sin(2*pi*n*t2/(T0)) en...

3 years ago | 0

Answered
Find the nonzero maximum frequency corresponding to FFT graph.
If the DC offset is of interest (or even if it isn't) [maxSOa,index] = max(SOa(2:end)); % ignores first point a f=0 F_fake = f...

3 years ago | 0

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I dont understand why the variable x is incorrect.
Hi Nam, What is the justification for the computation of r(1,:)? If you're trying to find the extrema of J0, why use fsolve to...

3 years ago | 0

Answered
Programmatically change MATLAB Fcn Block Function Configuration Script
Hi Aarish, This worked for me. config = get_param(gcb,'MATLABFunctionConfiguration'); % Matlab Fcn block selected in Simulink ...

3 years ago | 0

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Answered
Finding intersection of rlocus branch and a line at an angle
One way would be to use the output arguments from rlocus to get the closed loop pole locations and the associated gain. Here's ...

3 years ago | 0

Answered
Step() not working as expected with USS state space (Uncertain Sys)
Hi John, Disclaimer: I'm not really a user of the Robust Control Toolbox. I'm not quite sure how to interpret the discretizati...

3 years ago | 1

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Answered
Applying array of transform matrices to array of vectors
Check out pagemtimes. Whether or not it's faster than a loop ... would need to be tested on your system D = rand(3,3,700); v ...

3 years ago | 0

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Answered
How to tell if an object is an Uncertain state-space (USS) model?
Hi @John Looks like isuncertain can be used to query if the input is uncertain. Also, there is a function isStateSpace that c...

3 years ago | 1

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Answered
Spectrogram function cutting off beginning and end of signal
Hi Danielle, Create a fake signal using the the parameters in the question downsampledrate = 2e3; rng(100); originalsound = ...

3 years ago | 0

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Answered
Converting frequency domain to Time Domain using IFFT
Hi luo xj, Would need more information on what you have. Here is an example showing how to reconstruct a signal. Maybe it can ...

3 years ago | 1

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Answered
Сan not identify block
Right click on the block and then click on Help, which will take you the doc page for the block.

3 years ago | 0

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How to handle empty input arguments with the arguments block?
It sees like, at least based on the examples in the Question, the desire is to have a value of empty be overwritten with some ot...

3 years ago | 0

Answered
Chebyshev smoother, I cannot get this to run, I dont understand why.
Hi Nathan, Can't run the code because not all of the information needed to run it is provided. dtVx = rho*resolx.^2./(4*eta_nb...

3 years ago | 0

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Answered
How can I set this model properties ( Enable model access to base workspace ) by API such as set_param command?
Does set_param('f14','EnableAccessToBaseWorkspace','off') do what you need? Link to Doc Page The doc page says the parameter...

3 years ago | 1

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Answered
How to incorporate equations in the connect function for control design?
connect only works with lti system objects. Nonlinear elemens have to be linearized around an equilibrium point and the lineari...

3 years ago | 1

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lsim() vs step() : are different responses expected?
@John I was able to recreate your strange result on R2022a. After some investigation, I think I know what's happening. load ...

3 years ago | 1

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Answered
Adding InternalDelay for State Space system
Hi John, I suspect the error message is telling you that you can only change the value of internal delays that already exist in...

3 years ago | 1

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Answered
How to plot the actual frequency range for the FFT plot?
clear all; close all; clc; %% Signal parameter c = 3e8; % speed of light fc= 10e9; % c...

3 years ago | 0

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A weird feature in the obtained function from calculating the inverse Fourier transform using ifft
Hi Shaily_T, It looks like the purpose of the code is to linearly convolve an input signal with an impulse response via mulitip...

3 years ago | 1

Answered
Omega method to integrate sin function
Hi Tommaso, Starting with the acceleration as in the orginal code (I prefer to use row vectors) % use row vectors fs = 20; % ...

3 years ago | 2

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Answered
How to find the correct magnitude/frequency value for FFT when there has noise?
Hi Hantao, Load the data x = readtable('Data.xlsx'); Time = x.Time; Current = x.Current; Plot it figure plot(Time,Current...

3 years ago | 0

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Answered
Why is FFT result divided by NFFT instead of the root of NFFT?
Hi Miktat, The energy spectrum and the amplitude spectrum are two different things. Using the conventions of fft, the output yf...

3 years ago | 0

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Answered
Why does cconv perform worse than conv?
I ran this code where cconv outperforms conv for large n n = round(linspace(1e3,1e5,50)); n2 = 2.^(5:nextpow2(n(end))); n = s...

3 years ago | 1

Answered
lsim() vs step() : are different responses expected?
The code and the system in the .mat file does not recreate the step plot. There is also an undefined variable. load sys.mat % ...

3 years ago | 0