Answered
Indexing vectors with a zero and creating a "predicted" vector knowing what the diff should be
This solution is similar in spirit to that in this comment, which I think is the best approach based on how the problem has been...

8 months ago | 0

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Answered
How can I plot 10 shifted single impulses in one plot (in a row)?
imp = @(x) sech(x); S0 = @(x) imp(x).*(x<=0); % assumes S0(0) = sech(0) ub = 10; x_imp = linspace(-ub, ub, 1001); x_S0 =...

8 months ago | 1

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Answered
The sine wave comes out as flat as flat line .
The yellow line likely isn't flat, it just looks that way becuase the y-axis is scaled by 10^15. Try sending the that signal to ...

8 months ago | 2

Answered
Simulink Matlab Fcn, logical error for incrementation in Goertzel's algorithm
Hi bieron surya, Every time the function executes it hits the line count = single(0); which does exactly what it says, i.e., ...

8 months ago | 0

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Answered
The coefficients of a Hermite polynomial
coeffs n = 4; H = hermiteH(n, sym('t')) [c,terms] = coeffs(H,sym('t')) or [c,terms] = coeffs(H,sym('t'),'all') Typically o...

8 months ago | 2

Answered
Load Pretrained Networks in Matlab function block
According to the doc pages coder.loadDeepLearningNetwork and predict- (not recommended) and the error message this function migh...

8 months ago | 0

Answered
Any commands about rotation where the unit of the input is radian
eul2rotm and angle2dcm both ingest angle inputs in radians, but they both require three angles on input. Also, care must be take...

8 months ago | 0

Answered
error in discrete space state depeding on coefficient
Hi SUENGTAE, In the first case we have: J = 0.01; b = 0.1; K = 0.01; R = 1; L = 0.5; A = [-b/J K/J -K/L -R/L]; ...

8 months ago | 1

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Answered
unit delay in z-domain, is this correct? I do not think the bode is correct. Thanks
Hi Mohammad, What exactly about the Bode plot appears to be incorrect? The gain of the unit delay should be 1 (or 0 dB) at all...

8 months ago | 0

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Answered
Why Doesn't "clear all" Clear the Assumptions from the Symbolic Engine?
Looks like this is fixed in whatever version of 2024b that Answers is running now as compared to the version it was running when...

8 months ago | 0

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Answered
Linear Acceleration input to the IMU Block in Simulink
Hi Ubersich, You're not getting anything wrong, only suffering from poorly written documentation and a block algorithm that's p...

8 months ago | 1

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Discussion

Should Plotting Functions Implicitly Squeeze Inputs?
Should plotting functions, such as plot, semilogx, etc. internally apply squeeze to inputs? For example, the ubiquitous bode fr...

9 months ago | 1

Answered
From Matrix s-domain to state space and Z-domain
Hi JD, What does "Tc(s) constant value per some period suppied by 2D lookup table?" mean? If you have the R_ij and tau_ij for ...

9 months ago | 0

Answered
How to solve vector equation y = mx +c
% A*[m;n] = b A = [3.2790 1; 1.9704 1; 0.9757 1; 0.4835 1; 0.2425 1]; b = [661 401 201 101 51].'; See...

9 months ago | 2

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Answered
Shows "vertcat error" in CIC
Hi Jay, That doc page does say that the filter can can accept either a vector or a matrix. But we have to look at how the data ...

9 months ago | 0

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Why does c2d changes the structure of the C matrix in the ss representation?
Hi Elia, When working with transfer functions, the only thing that's considered is the input/output relationship. The Control S...

10 months ago | 0

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Answered
Accessing variables from a Simulink model initFcn callback with parsim
Hi Guillermo, In my opinion, the documentation is very poor in explaining the interaction between workspaces, models, and model...

10 months ago | 0

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Question

Is the Ordering of the Output from combinations() Documented, Repeatable, and Sensible?
Suppose I want to evaluate a function of three variables over a grid of points in 3D space. For example, using three nested loo...

10 months ago | 2 answers | 0

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answers

Answered
I'm running signal processing simulations in Simulink. What's the proper way to set the solver step size?(I've attached my .slx file, tks!)
Hi ColdRabbit, As long as the Sample Time parameter of the ZOH block is set to the sampling period for which you want to comput...

10 months ago | 0

Answered
Different Results of allmargin() and margin()
Hi Florian, For a MIMO system, allmargin computes the margins of each loop with all other loops are closed. However, the comman...

10 months ago | 0

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Answered
Cannot plot Fourier Transform
Hi David, I just came across this old post. syms t w h = sin(4*(t-1))./(pi*(t-1)); H = fourier(h, t, w); % Define Input and...

10 months ago | 0

Question

How are Extrinsic Functions Handled When Executing Parallel Simulations with parsim() ?
Suppose a Simulink simulation that contains a Matlab Function block that calls another function declared as extrinsic with @doc:...

10 months ago | 1 answer | 0

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Answered
how to get the current model design in matlab?
Hi Atul, After a block is added to a Simulink diagram one can use bdroot(element) to get the name of the model in which the ele...

10 months ago | 0

Answered
Using interpolant surface in Simulink
I think the fundamental problem is that objects of class sfit are not eligible for code generation, and so cannot be used inside...

10 months ago | 1

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Answered
Spectral radius of 4×4 matrices
Hi Sunday, The code runs without error (after defining h) here on Answers using 2024b. You're seeing a different result in 2021...

10 months ago | 2

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Answered
Icare doesnt have the answer
Hi jowii, % Input Parameter a_11 = -0.0857343575298716; a_12 = -4.83449522782224; a_21 = 0.000139892812156308; a_22 = -0.10...

10 months ago | 0

Answered
H1 H2 Hv estimators all the same
Hi Riccardo, I'm only marginally familiar with the H1/H2 methods of estimation. Keeping that in mind ... load data.mat force ...

10 months ago | 0

Answered
Help using logic to edit table
T = table(["H";"L";"H";"L"],(1:4).','VariableNames',["Tide","Height"]) Thigh = T(T.Tide=="H",:) Tlow = T(T.Tide=="L",:) Or, i...

10 months ago | 0

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Question

Does Symbolic int() Always Return Justifiable Results When the Integrand Includes a kroneckerDelta?
Integrating the kroneckerDelta sounds a bit weird, but it it it's allowe it should be consistent. Define the Kronecker Delta an...

10 months ago | 0 answers | 0

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Answered
Inverse Fourier transform of unilateral exponential function - ifourier MATLAB
syms t f a = sym('a','positive'); Y(f) = 1/(a + pi*f*2i) The default parameters in sympref assume that the transfomr variable...

11 months ago | 0