Respondida
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...

11 meses hace | 0

Respondida
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]; ...

11 meses hace | 1

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Respondida
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...

11 meses hace | 0

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Respondida
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...

11 meses hace | 0

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Respondida
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...

11 meses hace | 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...

11 meses hace | 1

Respondida
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 ...

11 meses hace | 0

Respondida
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...

11 meses hace | 2

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Respondida
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 ...

11 meses hace | 0

Respondida
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...

12 meses hace | 0

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Respondida
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...

alrededor de 1 año hace | 0

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Pregunta

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...

alrededor de 1 año hace | 2 respuestas | 0

2

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Respondida
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...

alrededor de 1 año hace | 0

Respondida
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...

alrededor de 1 año hace | 0

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Respondida
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...

alrededor de 1 año hace | 0

Pregunta

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:...

alrededor de 1 año hace | 1 respuesta | 0

1

respuesta

Respondida
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...

alrededor de 1 año hace | 0

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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...

alrededor de 1 año hace | 1

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Respondida
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...

alrededor de 1 año hace | 2

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Respondida
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...

alrededor de 1 año hace | 0

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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 ...

alrededor de 1 año hace | 0

Respondida
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...

alrededor de 1 año hace | 0

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Pregunta

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...

alrededor de 1 año hace | 0 respuestas | 0

0

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Respondida
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...

alrededor de 1 año hace | 0

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pole placement controller gain trouble with identified receptance
Hi GIOVANNI, I don't understand what the math is trying to do or how f and g will be used, so this answer may be limited in sco...

alrededor de 1 año hace | 0

Respondida
Issue with Laplace Transform for Exponential Functions in MATLAB
Hi FFU, Let's take a look at these one by one. syms t real f1 = 2^(-t); I've never seen a Laplace transform table that inclu...

alrededor de 1 año hace | 0

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Respondida
Magnitude Plot Incorrect Frequency
Recheck the conversion from rad/sec to Hz in the plot command for the magnitude of the spectrum

alrededor de 1 año hace | 1

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Pregunta

Why Doesn't doc Show Links to Other Uses of the Same Function?
Using 2024a with local documentation .... I just realized that when I open a doc page for a function that I no longer get the b...

alrededor de 1 año hace | 0 respuestas | 0

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Plotting Resistance vs Frequency Response
Looks like the model also need an Input Perturbation to define the input to the transfer function. Should be on the same menu as...

alrededor de 1 año hace | 0

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Respondida
Filter cascade with raised cosine filter and half-band filter
Fs = 20e3; Fp = 15e3; rc = rcosdesign(0.35, 5, 2, 'sqrt'); Fs2 = 4*Fs; % Sample rate Fp2 = Fp; % Passband edge Fh2 = ...

alrededor de 1 año hace | 0

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