回答済み
I am trying to get my function to return two variables to the workspace. It is a very simple function. What am I doing wrong.
If you want both outputs returned, use ouput arguments on the call [m,n] = save_13(1,2) When you call a function without outpu...

約3年前 | 0

回答済み
Simulink - output of a block as an another block parameter
Hi Wiktor, Some Simulink blocks have parameters that can be specified either internally or externally, such as the Integrator b...

約3年前 | 0

回答済み
Hello, I want to use the LPC function to achieve AR pre-whitening, will the AR coefficient obtained by fftfilt filtering signal is a residual signal?
Hello Yx Y, Based only on reading the lpc example, it would seem that the call to fftfilt should be xest = fftfilt([0 -a(2:end...

約3年前 | 0

| 採用済み

回答済み
Using Fourier Series write a MATLAB function to synthesize the wave-form in problem (2-19), Assume A = 4mV. Your function should take n ( # of harmonics ) and produce a plot
Hi Evan First, check your code that defines one period of v(t). It''s probably easier to define v(t) using piecewise syms t T...

約3年前 | 0

回答済み
Use of syms, piecewise & conv commands
Hi Ben, First you have to decide if you want to solve the problem for a closed form expression using symbolic tools, like syms ...

約3年前 | 0

| 採用済み

回答済み
how to get the correct plot of function sin(N+1)*pi*x^2/sin(pi*x)^2 with different N
Hi Daniel, I think you are correct that the limit of y as x approaches any integer is (N+1)^2. However, all the compuations are...

約3年前 | 0

回答済み
Repeat array onto the same row
A=[1,2,3,4] horzcat(A,A) horzcat(A,A(1:floor(numel(A)/2))) % or use ceils depending on how you want to handle the case where ...

約3年前 | 1

| 採用済み

回答済み
How to plot FFT?
Hi Sara, The frequency vector needs to be corrected. And for this data it's helpful to subtract out the mean before taking the...

約3年前 | 0

| 採用済み

回答済み
Fourier analysis of an spwm signal
Hi Mosharof, Load the data load spwm_one_cycle.mat Plot the differences between time samples. We see that the data is not equ...

約3年前 | 0

回答済み
transform the cell 'string' containing strings into a single string
load string.mat who string string_new = join(horzcat(string{:})) Probably not a good idea to have a variable named string, w...

約3年前 | 1

回答済み
Add zero padding to fft for accurate estimation
Hi Niusha Here is the first part of the code: Fs = 1e3; t = 0:0.001:1-0.001; x = cos(2*pi*100*t)+sin(2*pi*202.5*t); xdft = ...

約3年前 | 1

| 採用済み

回答済み
calculate wrong or "/" work different
Hi pipor The ldivide, .\ and mldivide, \, which is what you're actually using here, for the scalar case are mathematically (tho...

約3年前 | 0

| 採用済み

回答済み
How to get the eigenvalues of a transfer funciton matrix
Hi 宇航杨, Considering that question 1 is about the "eigenvalues of a transfer function matrix", I would say that defining what t...

約3年前 | 0

回答済み
Why does frequency spectrum gets flipped in STFT compared to the one generated from FFT?
Using random data rng(100); Matrix = rand(1000,1); Compute the stft [s,f,t] = stft(Matrix,5000/3,Window=rectwin(32),OverlapL...

約3年前 | 0

| 採用済み

回答済み
Stability margins for a cascaded system with getLoopTransfer functions
Hi Daam, To get the stability margins at 'e', I believe this is correct: Le = getLoopTransfer(CL,'e',-1); % open-loop function...

約3年前 | 1

| 採用済み

回答済み
Fourier transform of an impulse response function
Hi Jason, syms t tau f real % SYSTEM I'd use heaviside, but piecewise works too. h = piecewise(t>=0, 0.01005*(exp(-t))*si...

約3年前 | 0

回答済み
I have 4 input channels (time series) and two output channels (time series) form test. I would like to calculate transfer function using tfestimate (MIMO).
Hi Dhiren, Have you tried the 'mimo' option of tfestimate (link to doc page) ?

約3年前 | 0

回答済み
Does Error Message Depend on Whether or Not Function is Executed Inside Try/Catch?
I put in a service request to Tech Support on this question. Their answer was that the error that's returned to the user does, o...

約3年前 | 1

| 採用済み

回答済み
Saving signals for each case of parsim() simulation
Hi TeraWatt, 1) Not sure what the issue is. I created a simple model with one logged signal. Ran the following script (R2022a)...

約3年前 | 0

回答済み
Problems with the creation of a randomic signal
Hi Andrea, How are you defining the bandwdith? fs=200000; %sampling frequency B = 5000; %bandwidth rng(1); n = 1e4; % no...

約3年前 | 0

| 採用済み

回答済み
Hello, I have problem with odeToVectorField in ODE second order system of equations.
The problem is confusion between sym expressions and symfun objects. g= 9.81; m= 0.468; Ix= 4.856e-3; Iy= 4.856e-3; Iz= 8....

約3年前 | 0

回答済み
readmatrix error handling in Simulink Matlab function
Try using exist: function y = fcn(u) coder.extrinsic('exist'); fileexists = 100.0; % dummy assignment to specify fileexist...

約3年前 | 0

| 採用済み

質問

Does Error Message Depend on Whether or Not Function is Executed Inside Try/Catch?
This call to diff resolves to symbolic diff syms s diff(@(s) 1/(s+1),s) which diff(@(s) 1/(s+1),s) I guess the parser sees t...

約3年前 | 1 件の回答 | 0

1

回答

回答済み
Signal processing question (phase response of a digital filter)
Hi Paul, Can you provide a simple concrete, example that illustrates your concern? I suspect that you're seeing the difference...

約3年前 | 0

回答済み
Why doesn't the noise density of the Allan deviation plot match the noise density of imuSensor?
Hi Tsz Hey Lam, The example in the link was for angle random walk (ARW), but the example in the question is using white noise. ...

約3年前 | 0

回答済み
Using the command hinfsyn(), returns the error "Error using DynamicSystem/hinfsyn Plant P must have an explicit state-space realization".
Hi BIJIT, Running the code .... L=500e-6; C=40e-6; R=0.01; Ts=50e-6; w_lc = 1/(sqrt(L*C)); w_sys = 2*pi*60; s = tf('s');...

約3年前 | 0

回答済み
Plotting a spectrogram with y axis values as whole numbers and time set to seconds
Hi Felix, Return the output arguments of spectrogram and then you can make any plot you want with any units in any of the dimen...

約3年前 | 0

回答済み
2D FFT interpolation - Keeping the amplitude
Hi canadarunner, The plot on the left is amplitude and the plot on the right is in dB. Changing the left plot to dB brings the ...

約3年前 | 0

| 採用済み

回答済み
Issues with SImulink Output to a Vector.
It sounds like you've solved the immediate problem. Based on what's been stated, the "vectorized" approach is taking advantage ...

約3年前 | 0

| 採用済み

回答済み
Fourier transform of dynamic mode coefficients for impinging jet along a line from nozzle exit to plate at a distance 0.6 times jet diameter
Hi DEBI, It will be easier for people to help if yor provide all of the information needed to run your code. You should save th...

約3年前 | 0