Respondida
How to add a time delay to a diagonal ss from a reside pole function?
Hi Joan, The problem appears to be with how bodeplot is unwrapping the phase. Here is the original code % Delay problem Ak =...

casi 2 años hace | 0

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Respondida
how to label the variance decomposition table
Check the doc page collintest and review how to use the VarNames input. Or, instead of pulling all the variables out from data,...

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Respondida
PID controller, difference when graphing step function with PID control block in matlab and simulink
Hi hoang, The posted code doesn't result in the same figure as in the question s =tf('s'); g = 1.883e5/(s*(s^2+4466*s+6.43e6)...

casi 2 años hace | 1

Respondida
how to calculate singular values in collin test to detect multicollinearity
Hi NAFISA, Using the example from the the doc collintest load Data_Canada Output from collintest [sValues,condInx] = collint...

casi 2 años hace | 1

Respondida
FFT multiple input waves and plot on same graph
%% Input Signal fs = 20e3; numFilts = 32; % filter_number = numFilts; freq1 = 1000; % Hz Nperiods = 15; % we need more th...

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Respondida
How does nufft function work in matlab?
To get fft and nufft to yield the same results .... tmax = 12; n = 2^11; tau = 1; % Width of the gaussian pulse ...

casi 2 años hace | 0

Respondida
Temporarily Change Signal Line Names in Simulink
Hi Dhruv, At the risk of asking an obvious question, does the workflow require that the model be saved after modifying the gene...

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Respondida
Why do these methods to obtain the simulink model transfer functions return different results?
Hi BW, Define PI and F s = zpk('s'); PI = 1 + 2/s; F = 6; In the first case, the linerarizer computes the transfer functio...

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Respondida
Simulink 3D matrix interpolation using pre-lookups
Hi Alborz, It looks like you're switching between 6x5 and 5x6 in your post. Assumign that a) the table is 6 x 5 x 2 as in the ...

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Respondida
Are there any alternatives to try/catch statements that are supported by code generation?
Hi Roop, Can you post the code of a simple Matab Function that illustrates how you're tyring to use a try/catch? I'm having tro...

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Respondida
Reconstruct time series from FFT components. There is a time shift error.
Hi Haifei, You may want to investigate why the data is not uniformly sampled and how that impacts the analysis. Does the other ...

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Respondida
Simulink - How to create a conditional "if" block
Perhaps you can use a Relay block to model the desired behavior based on the heating/cooling analogy. The output of the Relay ca...

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Respondida
Why do we use ifft instead of fft when looking at the spectrum of a sech pulse (uu) in this code?
Hi Siheon, Your interpretation of fft as going from time to frequency, and ifft as going from frequency to time, with fft and i...

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Respondida
Is enabled subsystem confusing? (Enable Port)
Hi Ahmed, To me that looks like an error in the documentation. That parameter controls what happens to the states inside the su...

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Respondida
Discrete convolution in time/Laplace domain
Simplest and most efficient approach would be to compute samples r_i = r(i*T) where T is the sampling period and then use conv t...

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Respondida
Is the "kinematicTrajectory" function correct for calculating angular velocity?
Hi Erik, The code is comparing two different quantities: Here, T is the matrix that mutliplies the angular velocity vector res...

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Respondida
Extracting Data from an Array of Arrays using a Loop?
Hi Kylen, To make sure I understand correctly .... at the end of the processing you have a variable called 'out' and it is an a...

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Respondida
How to use previous answer in new calculation n times
A=[0.3 -0.2; -0.6 0.8]; B=[-14;2]; x=[1;2]; sys = ss(A,B,eye(2),0,-1); y = lsim(sys,ones(11,1),0:10,x); % y0 = x %y...

casi 2 años hace | 2

Respondida
Frequency response of a system operating at a fixed frequency
Hi Alberto, Conceptually, what you're doing is correct (though there are other alternatives to the input signal). Keep in mind ...

casi 2 años hace | 1

Respondida
Designfilt and bandstopfir adds +320dB for some reason
Hi Andres, I don't have a complete answer, just an observation. Here's the original design with order 301 filterObject1 = des...

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Respondida
hey so i need to repeat the code everytime to see and analyze the time responses for 20 different values of k. How can i do it at once and have the output for all the values?
Or use a model array plant = tf(20,[1 1 5]); k = realp('k',1); sys = feedback(k*plant,1); sysarr = sampleBlock(sys,'k'...

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Respondida
Even & Odd Discrete time Signals
Matlab doesn't support zero or negtaive indices, so it won't be possible to implement this operation using ordinary vector index...

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Respondida
Digital filter with lowpass, then filtfilt: different output
lowpass calls filtfilt (or executes code equivalent to filtfilt) only if the underlying filter is IIR. If it's FIR, as in the qu...

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Respondida
Assertion block does not stop simulation if I run the model with "sim" function
According to this doc page, pausing a simualtion while it's running is not supported when using the sim command. If in your act...

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Respondida
HELP! Error using plot Vectors must be the same length. Error in Doc (line 94) plot(t, y);
Hi Matheus, The explanation for the error is that the fftm function is doing a "one-sided" FFT, hence it returns an output with...

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Respondida
Scaling of Filter Coefficients in "fir1" function
For a FIR filter H(z) = b0 + b1*z^-1 + b2*z^-2 .... + b_n*z^(n-1) its frequency response is H(w) = b0 + b1(exp(-1j*w) + b2*e...

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Respondida
The real implementaion of the C2D function "Control Systems Toolbox"
Hi Youssef, There are two files named c2d.m which -all c2d I believe the code listed in the question is of the former. The la...

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Respondida
How does one solve equations between symbolic functions for functions
Maybe isolate is the solution ... syms z(t) theta(t) r eqn = z(t)-r*sin (theta(t)) == 0 z(t) = rhs(isolate(eqn,z(t)))

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Pregunta

Why Does numel() Accept More than One Argument?
@doc:numel indicates that the function accepts only a single argument. But it can be called with more than one argument and it r...

alrededor de 2 años hace | 1 respuesta | 1

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respuesta

Respondida
Force symbolic simplification to eliminate variable
Hi ludolfusexe, Try equationsToMatrix load ddddh_fun symvar(ddddh_fun) syms u % A*u = b [A,b] = equationsToMatrix(ddddh_fu...

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