Risposto
Understanding FFT in MATLAB
Hi Janee, Speaking only to the Matlab side of this question, why would it expected that the rows of u1 and up be the same? Each...

quasi 2 anni fa | 0

Risposto
Typo in the nufft (R2024a) documentation?
Hi Ana, Yes, either the plot command was intended for X or the ylabel is wrong. In the context of that example, I suspect they ...

quasi 2 anni fa | 0

| accettato

Domanda


How Does mldivide Work for Full, Square, Full Rank, Triangular Matrix?
How does mldivide work when the input matrix A is full, square, full rank, and triangular? The doc page just say it uses a trian...

quasi 2 anni fa | 0 risposte | 0

0

risposte

Risposto
Plot Piecewise function graph
This line y(i) = 1./log(2)*sin(x(i)); is incorrect. The order of operations for multiplication and division is that they ar...

quasi 2 anni fa | 0

Risposto
How to use parameter callback to parameterize mask workspace?
What happens if you just enter T = 1/f; in the Initialization section and leave the f_callback blank, or delete it altogether?...

quasi 2 anni fa | 0

Risposto
Inverse of a symmetric matrix consisting of submatrices is desired.
I wasn't going to post this as it didn't seem like a useful answer, but, since @Torsten raised the idea of using the block matri...

quasi 2 anni fa | 0

Risposto
Assumptions are not being considered in symbolic math.
Hi Nick The issue is that the code is using linsolve, which doesn't know anything about the assumptions on the m_i. Generate a...

quasi 2 anni fa | 0

Risposto
piecewise function Fourier seriers
Hi KUN, In the context of the Fourier transform, I'm not sure that the assumption on t makes sense, at least not in the context...

circa 2 anni fa | 0

Risposto
want to differentiate 1+c*exp(t)/1-exp(t) which is 2*c*exp(t)/(1-exp(t))^2 and then return it to it's original form by integration using int(), understand rewrite(tanh,"exp")
Hi Joseph, I think you got the correct result, though not using what might be considered best practices syms f c t y(t) y ypri...

circa 2 anni fa | 1

| accettato

Risposto
Problem with using mussv
Hi Ofek, N = 30; w_vec = logspace(-5,5,100); "I calculate it using the function freqresp and the resulting array has dimensio...

circa 2 anni fa | 0

| accettato

Domanda


What Does the Symbolic Math Toolbox Mean by 0 < s When s is Complex?
syms s syms t real f = int(exp(-s*t),t,-inf,0) What does that first condition mean insofar as s is complex?

circa 2 anni fa | 1 risposta | 0

1

risposta

Domanda


Does the Symbolic Toolbox Support 0- and 0+ ?
syms s syms t real f = int(exp(-s*t),t,-inf,0) Is the second term in the second condition a notation for (though I'm not e...

circa 2 anni fa | 1 risposta | 0

1

risposta

Risposto
Adjusting a Sawtooth Graph and getting spectrum
Do you want a triangle or a sawtooth? Assuming the former as stated in the question, use tripuls %T = 10*50; fs = 2000; t = ...

circa 2 anni fa | 0

| accettato

Risposto
how to find Laplace transform of u(-t) in MATLAB?
Hi Sundaram, The function laplace implements the unilateral Laplace transform for causal signals. However, heaviside(-t) is no...

circa 2 anni fa | 0

| accettato

Risposto
How can a Simulink State Space block state be periodically reset?
i think you'll have to use an Integrator and other native blocks to implement xdot = A*x + B*u y = C*x + D*u Use the external...

circa 2 anni fa | 0

Risposto
modred() Scaled Output
Hi Sam, I can't explain why TMW chose to change the behavior of modred. Having said that, I have some observations about your ...

circa 2 anni fa | 0

| accettato

Risposto
How to get 2% and 5% settling time from simulink?
Hi Daniel, I'm interpreting your question to mean that you have a Simulink model of the system and in Simulink you stimulate th...

circa 2 anni fa | 0

Risposto
Zero-order hold practical differentiator offsets magnitude
Hi Greg, I don't know if this will be the complete explanation your looking for, but here goes .... Define the continuous-time...

circa 2 anni fa | 0

| accettato

Risposto
Symbolic integration has 3 solutions based on integration variable range, how to extract one of these?
syms U_0 r Radius mom_2 = int((U_0*(1-r/Radius)^(1/7))^2*2*sym(pi)*r,r,0,Radius) One approach that just extracts the case you ...

circa 2 anni fa | 2

| accettato

Risposto
How to set the sample time of a discrete transfer function block to 0.005? Please tell
Hi ISHITA, TMW recommends leaving the sample time of that block as inherited. Instead, control the sample time of the signal th...

circa 2 anni fa | 0

| accettato

Risposto
Discrete-time Simulink not matching Matlab Connect()
Hi John, Check this comment for an example that shows the same open loop system obtained from the combination of connect and ge...

circa 2 anni fa | 0

Risposto
Do source blocks in Simulink have an implicit unit step function built into them?
For the top path: Y(s) = s/(s+1)*X(s) = 1/(s+1) * (s*X(s)) The differentation rule for the one-sided Laplace transform is: L(...

circa 2 anni fa | 1

| accettato

Risposto
Find the 3D components-based row of an array that most closely matchs a given vector
I think the specific solution would depend on the figure of merit for defining "closeness" of two vectors. For example, if the ...

circa 2 anni fa | 0

Risposto
Why are subsystems highlighted in different color after simulation
Hi Neelabh, It looks like it might be due to Sample Time Colors. Go to Debug -> Information Overlays and see if the Sample Time...

circa 2 anni fa | 0

| accettato

Risposto
Execute Matlab function in Simulink
You are correct. In Matlab, the code looks like this (actually making the call to moving_average2) t = 0:0.1:10; u = sin(t); ...

circa 2 anni fa | 0

| accettato

Risposto
why am i getting the error "Incorrect number or types of inputs or outputs for function step."
Hi Salim Your code runs fine here. What version of Matlab are you using? I just changed the code to make separate plots intead...

circa 2 anni fa | 0

Risposto
ifft convert frequency domain to time domain
Hi Angie, The input to ifft should cover all frequencies from 0 to Fs - df, where df is the frequency step. In this case, max(f...

circa 2 anni fa | 1

| accettato

Risposto
How to automatically reinitialize the model workspace when Run Simulink model
Hi Steven, Model workspaces can be manipulated programatically In your workflow, create a model workspace object and use reloa...

circa 2 anni fa | 0

| accettato

Risposto
Symbolic expressions with pi are displaying as decimals
Hi Nathaniel. Option 1: Always use sym(pi); in symbolic expressions. For example 5.13445677*sym(pi) If you use the numeric ...

circa 2 anni fa | 1

Risposto
Why does augw(P, W1, W2, W3) give a much lower order generalized plant when compared to the by hand construction?
Hi Vinh, The 'by-hand' construction is nearly certainly not what augw actually does. You can look at the augw code; maybe it wi...

circa 2 anni fa | 1

| accettato

Carica altro