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Surprising behavior in randsample
I don't see anything in the doc that says anything about the ordering. randsample is an .m file. The algorithm for without repla...

3年以上前 | 1

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How make a high pass filter and give input to it simultaneously?
"How can i make a filter which can have a given cutoff frequency and also passes a custom made input (in the code)." Check out ...

3年以上前 | 0

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Rename integration variable in symbolic result
I don't know if I'd call this 'easily', but it gets the desired result (I believe). syms t m b y(t) y0 C x(t) % definitions of ...

3年以上前 | 0

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Matlab - Bode plot of discrete and continuous Function
One problem is that the discretization of the product is not the product of the discretization. But with T_sample so small, tha...

3年以上前 | 0

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I have a time domain signal.I want to calculate energy of my signal......
Suppose we have a continuous-time signal syms t f x(t) = exp(-abs(t/5))*sin(2*sym(pi)*2*t) This signal is noncausal and has i...

3年以上前 | 0

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Discrete Average on Simulink
If I understand the question correctly ..... Use a Discrete FIR Filter block to maintain a running average of 600 samples. Set ...

3年以上前 | 0

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InitFcn Error at Simulink
The model (likely) needs information stored in a file called bldcData.mat in order to execute, so the InitFcn callback tries to ...

3年以上前 | 0

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How to plot the continuous convolution result
Hi YAMENG, Have you considered computing the convolution integrals directly? Note scaling to get them all to fit on the same ...

3年以上前 | 0

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Determine the Length of One Oscillation
I think this problem is supposed to be attacked like this. Define H(z) syms z H(z) = (-3*z^2 + 4*z)/(8*z^3 - 14*z^2 + 8*z - 2...

3年以上前 | 1

質問

Figure Control Buttons Out of Sync in Live Script
I'm running a live script. When I hover the mouse in the figure I the home, zoom out, zoom in, pan, and save buttons become vis...

3年以上前 | 1 件の回答 | 0

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Can I use a symbol as a variable?
Hi Prasenjit, Yes, you can do that syms m f = m^2 % expression that contains m as a symbol whos m % m is sym for m = 1...

3年以上前 | 0

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How to plot frequency spectrum of a piecewise function in matlab?
Hi Daniel, Regarding this comment, the use of fftshift and the multiplication by dt both have to do with using the Discrete Fou...

3年以上前 | 0

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I want to find the filtered signal and remove the noise from the discrete received signal from the radar and convirte it to continuos
c2d (Control System Toolbox) or c2d (System Identification Toolbox) requires the first input be a dynamic system model. As far a...

3年以上前 | 1

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I have an error when simulate a linear delay system with sliding mode control
Hi yousra, I'm not quite sure what the code is trying to do. However, the reason for the lsim error is pretty clear, and there'...

3年以上前 | 0

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How can I use the matlab function like fcn block
Hi titor7, The reason for the error in the original model show in this comment is because Simulink didn't have enough informati...

3年以上前 | 1

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Can't susbsitute a variable that is defined
Do syms C1 before calling subs. syms y(t) a eqn = diff(y,t) == a*y; S = dsolve(eqn) syms C1 subs(S,C1,2)

3年以上前 | 2

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Running simulink model with multiple values of a parameter, and then plotting multiple results on the same plot
Instead of, or in addtion to, the scope, send your data to a To Workspace block. Check out this doc page for an example of how ...

3年以上前 | 0

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Why does the step response to my discrete system not match between MATLAB and Simulink?
The explanation for the Simulink resutls is that the coefficients entered in the Discrete Transfer Function block don't represen...

3年以上前 | 0

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How to get state-space from a transfer funciton matrix
Don't use tf2ss. Check out ss instead to get started.

3年以上前 | 0

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linearize a non linear system
Normally, linearize is used to linearize a Simulink model. However, you may be interested in this Question first.

3年以上前 | 0

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Not simplifying to a usable answer
Hi Andrew, The answer key for Z1 appears to be incorrect. Also, I don't follow the equations you posted in the question. Anyw...

3年以上前 | 0

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Discrete input to continuous transfer function
Hi Luca, I'm 99.99% sure that the output of a block with a Discrete Sample Time is held constant until it changes. I know that...

3年以上前 | 0

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Output of a transfer function with input
The HeavisideAtOrigin should be 1 when using lsim M=2; b=14; q=20; num=[1]; G=tf(num,[M b q]); syms t F = 2*(heaviside(...

3年以上前 | 1

質問

Should this Symbolic Limit be Zero?
syms x a % complex by default syms n integer assume(abs(a)>abs(x)); assumptions limit(x^n/a^n,n,inf) Should that limit be z...

3年以上前 | 1 件の回答 | 0

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質問

Can Symbolic Assumptions be Combined or Simplified?
Suppose I have a variable syms z and assumptions assumeAlso(abs(z) > 1); assumeAlso(abs(z) > 2); assumptions The only valu...

3年以上前 | 0 件の回答 | 0

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Integral from 0 to inf with imaginary numbers takes too long
Hi BOSHU Here is my attempt. syms Kt Ks Cs M m to % overwritten later syms x Assume t is real, is that a good assumption? ...

3年以上前 | 1

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How to make a simple plot with two lines?
Hi Macy, %table_a = readtable('Data1.xlsx'); table_a = readtable('https://www.mathworks.com/matlabcentral/answers/uploaded_fil...

3年以上前 | 0

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A matrix is passed into Simulink fromworkspace,Invalid workspace variable specified as workspace input in 'test03/From Workspace1'. Time values must be non-decreasing.
If img is a contstant matrix, don't use a From Workspace block. Instead, use a Constant block and set its 'Constant value' bloc...

3年以上前 | 2

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im trying to Find ∂z∂u when u=0, v=3, if z=sin(xy)+xsin(y), x=2u2+v2, and y=3uv.
Hi Matthew, Repeating the code from your comment clear; syms u v x y z ; %partial z z =sin(x*y)+(x*sin(y)); dzdx=diff(z,x)...

3年以上前 | 0

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A compact way to sum the elements contained in two cell arrays (considering the case of empty cells as well)
Would be easier if the first element of b weren't empty. Logic would need to be modified a bit if there is a possiblity that a c...

3年以上前 | 2