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Paul


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Answered
Designing an Output Zeroing Input for an LTI Discrete-Time System in MATLAB
Hi shokouhfeh, I did not go through all of the math. But I do see that the input is of the form u[k] = (-1.1)^k That magnitud...

3 days ago | 0

Answered
vpa, simplify, solve, etc don't fully simplify symbolic function.
l = 50; a = 10; W = 1200; syms Q(z); Q(z) = 1200 + 56*z - 2.5*z^2; R = - int(Q(z), [0 l]) + W; syms F1(z) F2(z) F3(z); F1...

5 days ago | 0

Answered
what is this block called
That is a Memory block.

6 days ago | 1

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Answered
Transfer function model from block diagram
The easiest way, IMO, is to use connect. Feel free to post back here if you still have questions after reading the doc page and ...

7 days ago | 0

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Answered
Help with MATLAB symbolic toolbox
Hi Scott, See below for solution % Set up symbolic variables syms t C1 C2 % Set up parameters K = 2.2167e+06; M = 45.96; ...

11 days ago | 0

Answered
fftshift implementation in Simulink
fftshift is extended to code generation. Assuming the data output from the FFT block is in linear order, you can call fftshift f...

13 days ago | 0

Answered
ECEF 6DOF block - position calculation
Hi Thomas, As far as I can tell, the translational equations in the Algorithms section of the documentation page 6DOF ECEF (Qua...

14 days ago | 0

Answered
Data extraction/split from table
Hi Daher, Start with findgroups identify the unique rows in the table and map each row to a unique row. T = readtable('art_fil...

16 days ago | 2

Answered
Does enu2ecefv make any assumptions about the ellipsoid?
Hi Eitan, See Vectors in 3-D Coordinate Systems for a brief explanation.

19 days ago | 0

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Answered
How to calculate only several frequency with FFT ?
If the desired frequenices are a subset of those that correspond to the DFT as computed by fft, I'd imagine in many cases there ...

19 days ago | 1

Answered
how to search parameter with specific name under the simulink system
Check out Simulink.findVars

21 days ago | 0

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Answered
possibility to create "Enbaled" subsystem
One option would be to create the subsystem as an Enabled subsystem and then control the enable port with a signal that you cont...

22 days ago | 0

Answered
steady plot end with different rate of rise question
Hi fima, The functions being plotted are of the form syms y_i(x) r_i disp(y_i(x) == exp(r_i*x) - 1) Why should y_i(x) be the...

24 days ago | 0

Answered
Serious Problem with FiltFilt Function
The filter is not unstable. Rather, the issue is an interaction between how filtfilt works and the implementation of the biquadr...

24 days ago | 0

Answered
Could not define a data in matrix form in model workspace ( for simulation)
Based on the limited description, I'm not quite sure how you'd like to run multiple iterations of a simulation for different par...

25 days ago | 0

Answered
How to plot a string signal/array?
I don't believe there is a built-in function to plot a string vector against a numeric vector in any fashion, much less to produ...

27 days ago | 1

Answered
readtable does not import headers properly while reading csv file
dbtype data.csv T = readtable('data.csv','LeadingDelimitersRule','keep','ReadVariableNames',true); T(1:5,:)

1 month ago | 0

Answered
no data in the data browser when i use model linearizer in simulink
See this Question and Answer.

1 month ago | 0

Answered
unable to identify and simulate a function block
Try using a Constant block and set the block parameter "Constant value" to 2*Kr*lfc. Can do the same for the Kr*lfc term as well...

1 month ago | 0

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Answered
How to change the default x-axis unit in a Bode diagram to Hertz?
ctrlpref allows one to change the default units for frequency axis when plotting with bode and bodeplot (among other defaults in...

1 month ago | 1

Answered
Deconvolution of two Bragg Curves
D = dir; D(3).name T1 = readtable(D(3).name); T1.Properties.VariableNames VarName2 = T1.Var2; D(4).name T2 = readtable(D(4...

1 month ago | 0

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Answered
Which exponential option block: fcn vs math function, is more accurate in a Simulink model?
In general u/fc (top path), is not exactly the same as u*(1/fc) (bottom path) in floating point. Example: rng(100) u = rand; ...

1 month ago | 0

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Answered
Why does this special case for associativity of a matrix product with a hadamard product hold true?
Hi Clay, If you're willing to accept (or show, which I think would be straight forward) that, in Matlab, matrix .* row is equal...

1 month ago | 2

Answered
Implementing Z-Transform of -a^n*heaviside(-n-1)
syms a n z Assume is an integer for clarity assume(n,'integer'); To get the expected result, we have to ensure the correct va...

1 month ago | 1

Answered
How to Solve a System of Equations for symfun Objects?
I took a shot. Here's a start, doesn't do any error checking, assumes that there is one valid solution .... syms R(s) e(s) Y(s)...

1 month ago | 0

Question


How to Solve a System of Equations for symfun Objects?
Suppose I have a system of equations: syms R E Y G eq1 = Y == G*E; eq2 = E == R-Y; Solve for Y and E in terms of R sol = so...

1 month ago | 2 answers | 0

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answers

Answered
question about dely lines
One can attack this symbolically if the parameters in the problems aren't known. If they are, one can proceed numerically using ...

1 month ago | 0

Answered
How to use the diagonal symbol matrix？
Need to specify the vars explicitly if defined individually syms a1 a2 a3 A = diag([a1,a2,a3]) M = matlabFunction(2*A,'Vars',...

1 month ago | 1

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Answered
how can plot the region of convergence?
Since 2024a, radiusregion looks like a reasonable approach to get started. For example, suppose the region of convergence is 0....

1 month ago | 0

Answered
What is default Mu for Vehicle Body 3 DOF block?
As best I can tell, if the [mu_r, mu_f] vector is not specified externally, then the block uses the parameter specified in Nom...

1 month ago | 0

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