已回答
Trying to filter timeseries data by logical index on time within matlab function block but it tells me property Time not recognized as valid
Hi Matthew, The output signal of the From File block is not a time series, it's probably a double. The output from the Constan...

5 months 前 | 0

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Does [V,D] = eig(A) always return normalized eigenvectors for any real matrix A?
Whether or not the columns of V are normalized to unit magnitude depends on how eig is called. See eig - Eigenvalues and eigenv...

6 months 前 | 1

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已回答
Rate Limiter in enabled subsystem
I tried a Rate Limiter block inside an Enabled Subsystem and the simulation ran to completion in both Normal and Accelerator mod...

6 months 前 | 1

提问

What is the Best Way to Call Matlab from a C++ Program and Return Results to that Program?
What is the best way to call Matlab from a C++ program and return results to that program? So far, I can see two options: 1. U...

6 months 前 | 0 个回答 | 0

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How to make a matlab script that runs simulink model to run parallel instances of the model
Hi alberto, The third input to setVariable should be the actual value of the variable. simIn(idx) = simIn(idx).setVariable('Se...

6 months 前 | 0

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已回答
How to Configure Simscape Multibody Block Parameters Using MATLAB
Hi Justina, It does appear that the Simscape Multibody documentation is sparse to non-existent on programmatic use of block par...

6 months 前 | 1

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已回答
Robust Control: dksyn example
I believe the issue here is that: the plant is unstable, the construction of P2 duplicates all of the states in the generalize...

6 months 前 | 0

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A quarter car model with additional massless degree of freedom for the top mount
Hi @Simon Aldworth Seems like the equation for the massless element would be: m5*x5ddot = kp * (x1 - x5) + cs * (x2dot - x5dot...

6 months 前 | 0

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How can I store data from my simulink model in and and use it during runtime.
Does the trigger event enable the execution of an enbabled subsystem? Is the data to be captured from a signal inside that enabl...

6 months 前 | 0

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simulink reference block or library block
Hi stephane, Component-Based Modeling Guidelines - MATLAB & Simulink is a good place to start, followed by the links at the bot...

6 months 前 | 0

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searchin for an M file in all folders of my PC.
The dir command can recursively search. I think for this question it would be d = dir("C:\**\filetofind.m")

6 months 前 | 1

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Repeated uncertanity Blocks in robust control
Hi Amit, As far as I can see, mussv does not support repeated, full, complex blocks. Out of curiosity, in what sort of problem...

6 months 前 | 0

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Why Does ifourier Not Return Equivalent Results for Equivalent Transforms?
Tech Support confirmed a bug (and it's quite pernicious IMO). Their suggested workaround for this particular problem is to simp...

6 months 前 | 1

提问

Why Does ifourier Not Return Equivalent Results for Equivalent Transforms?
Consider two expressions of a Fourier transform syms t omega real HU(omega) = -(exp(-omega*1i)*(exp(omega*1i) - 1)*(omega + 1i...

6 months 前 | 1 个回答 | 0

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Any way to remove terms smaller than "digits" from symbolic expression? R2023a
"Uh, it's always the term that's on the order of the smallest number representable by digits." Giving the benefit of the doubt ...

7 months 前 | 1

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Accessing Simulink model inputs and outputs when stepping model via MATLAB set_param(mdl, 'SimulationCommand', 'step') command
Hi Sebastian, Check out the doc page for using a simulation object. It make it easier to do what you want.

7 months 前 | 1

提问

Why Doesn't pwelch with the 'centered' Option Follow the Same Convention as fftshift for Even nfft?
When the fft length is even, fftshift flips the input so that the Nyquist point is to the left. But pwelch with freqrange = 'cen...

7 months 前 | 0 个回答 | 0

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提问

Should Unity Value be Displayed when Multiplied by a symunit?
The following results look peculiar IMO. Shouldn't a unit always be preceded by a value? I've never seen this convention before....

7 months 前 | 0 个回答 | 0

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已回答
Adding a single left bracket and a single right bracket to a matrix
I'm not sure if this can be done in the command window, but in a Live Script matrix output can be shown with square brackets. A...

7 months 前 | 1

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problem with coeffs command
syms w z u y v x 5*w - 5*z - u*((603367941593515*x)/4503599627370496 - y/2) - v*(x/2 + (603367941593515*y)/4503599627370496) - ...

7 months 前 | 1

| 已接受

已回答
power spectral density of nonstationary data
Hi hxen, When uploading the data in a .csv file, please also include the code that reads the data from that file. It wasn't har...

7 months 前 | 0

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已回答
Can Simulink and other simulation software be repeatedly executed through Matlab scripts when simulating together？
Hi yiwei, There are several options for running Simulink simulations from Matlab scripts. Start from Run Simulations and then g...

7 months 前 | 0

提问

Does isAlways Make an Unwarranted Assumption that a Variable is real?
Define a sym variable syms v isAlways can't prove that v is real. Makes sense. isAlways(in(v,'real')) Now make an assumption...

7 months 前 | 0 个回答 | 2

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Biquad IIR filter design with Q factor sorting?
Hi Jay, h = fdesign.lowpass('N,Fc', 8, 10e3, 100e3); % 4-biquad with 100kHz sampling rate and 10kHz cutoff freq Hd = design(h...

7 months 前 | 0

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已回答
Unable to access parameters of the block "enable"
The "Data Type" parameter is on the Signal Attributes tab, but as stated in the Block Parameters dialog (as shown in the sceen c...

7 months 前 | 0

| 已接受

已回答
CONVERT FREQUENCY DOMAIN DATA TO TIME DOMAIIN
Here's an example that illustrates the potential utility and pitfalls of this approach. EDIT: 19 Jan 2026, updated code to ensu...

7 months 前 | 1

已回答
Can this symbolic expression be simplified anymore?
"In terms of simplifying, you could flip upside down to get rid of the one/over." Can try using numden, though the result might...

8 months 前 | 0

提问

Is the Order of Function Evaluation Guaranteed when Function Outputs are Concatenated into an an Array?
Suppose I call two functions within concatenation into an array A = [ones(1,2),zeros(1,2)] In this case, the order in which on...

8 months 前 | 2 个回答 | 1

2

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已回答
How do I perform a proper FFT of a gated segment of a time domain waveform with a logmag amplitude?
Generate a 512-point reference signal in the time domain Ts0 = 0.01; Fs0 = 1/Ts0; N0 = 512; n0 = 0:N0-1; t0 = n0*Ts0; y0 =...

8 months 前 | 0

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已回答
Find the transfer function of a differential equation symbolically
The function isolate comes in handy for this type of problem. syms u(t) y(t) dydt(t) t s Y(s) U(s) y0 dydt0 u0 omega_n z K % S...

8 months 前 | 1