Paul

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Answered
Stability Margins for MIMO Feedback Loop
Load in the data load linsys format short e The open loop system has a pole just to the right of the real axis. Maybe this is...

ungefär 3 timmar ago | 0

Answered
can anyone explain the difference between fft and freqz commands?
freqz is a general purpose function for computing the frequency response of a discrete-time filter. The filter can have an infin...

ungefär 22 timmar ago | 0

Question

Incorrect Substitution with subs() from Workspace Variables?
syms alpha s H t system = 1/(s + 1/alpha); y = ilaplace(1/s * (1-exp(-s*H)) * system) Define specific values for alpha and H ...

2 dagar ago | 0 answers | 0

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IFFT results in wrong frequency
The inverse Discrete Fourier Transform, as implemented by ifft, maps a signal from discrete frequency to discrete time. Each ele...

3 dagar ago | 0

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How can I use the function coeffs() as the input to the function tf()?
Unless there are reasons to use syms other then to compute the polynomials, it's probably better and easier to avoid syms altoge...

4 dagar ago | 0

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Array of transfer function (nxn) when multplied with an array of constant nx1 give issue
Example matrices rng(100); A = rand(3); M = rand(3,1); s = tf('s'); T = inv(s*eye(3)-A) H = T*M Your are correct that each...

5 dagar ago | 1

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Question

Should mldivide Return a Solution for Square, Rank-Deficient, but Consistent Set of Linear Equations?
load lindata A and b define a linear system of equations Ax = b. A is 12 x 12 with rank rank(A) But the linear equations are...

6 dagar ago | 2 answers | 0

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Solve equilibrium equations in MATLAB for a quadruped robot
Problem parameters W = [1; 1; 10]; x1=50;y1=31.65;z1=16.09; x2=sym(44.68);y2=sym(-27.26);z2=sym(-24.34); x3=-4.72;y3=-24.4;z...

6 dagar ago | 0

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How can I make the Nichols chart background grid more prominent when using Nicholsplot? (Too faint.)
You can change the linewidth of the grid lines plotoptions = nicholsoptions; plotoptions.GridColor = [0.0 0.0 0.0]; plotoptio...

9 dagar ago | 0

Question

Why Must the TimeZone be Specified for datetime when the Time Zone is Included in the DateString?
Suppose I have a date string fu = "Mon Mar 3 12:20:40 EST 2025" Converting to datetime causes an error because the TimeZone in...

10 dagar ago | 1 answer | 0

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Answered
How to create a table with data from multiple tables using function or for loop
Hi Kristine, It will be easier to process if the date for each table is actually stored in the data structure itself, rather th...

11 dagar ago | 0

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Deconvolution creates new peaks
Hi Riccardo, It might be simpler to just use the twosided option of tfestimate Also, the input data is single, might want to c...

11 dagar ago | 2

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Issue with Time-Domain Shifting Using Fourier Shift Property in MATLAB
Hi Jason, I think the fundamental issue is that one shouldn't expect that Result = 0. Suppose we have a continuous time signal...

12 dagar ago | 0

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Model variable/jittered clock to sample a signal in Simulink - how does variable sample times work?
Because the Hit Scheduler can accept vector inputs, I suppose the simplest approach would be to create the jittered sample times...

18 dagar ago | 0

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I am working on an assignment for class I can't figure out how to round the values in the table to two decimal places. Can anyone point out what I am missing?
It appears that formating numerics in a table is not same as the format used for display in the command window. Do you have to ...

27 dagar ago | 0

Question

How Can a sym Vector have Elements that are Vectors Themselves?
I ran the following code on 2024a syms x c1 c2 real m1c(x) = c2 + c1*x + heaviside(x - 4)*(3*x - 2)*(x - 4); This line causes...

27 dagar ago | 1 answer | 0

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Question

Simplify() Does Not Work with "All" Argument?
This is a bug? syms x c1 c2 real m1c(x) = heaviside(x-4)*(3*x-2)*(x-4) + c1*x + c2; simplify(diff(m1c(x),x),'All',true)

28 dagar ago | 0 answers | 0

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Answered
Matrix multiplication between an operation matrix, such as the rotation matrix, and a coordinate list.
y_rotation_matrix=@(theta) [cos(-theta) 0 sin(-theta);0 1 0;-sin(-theta) 0 cos(-theta)]; rng(100) coordinate_list=rand(10,3);...

30 dagar ago | 0

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Answered
Errors in the symbolic integration of the Dirac Delta function (bug?)
Hi Geoffrey, Not sure why there seems to be a problem with the antiderivative v1. You should consider reporting it as bug. I've...

30 dagar ago | 0

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Answered
Is it possible to 'interpolate' in FFT data?
Hi xd. Here is one way to think about this problem. Let c[n] = A*cos(w_0*n + phi) be the reference signal where -pi <= w_0 <= ...

ungefär en månad ago | 1

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Answered
Run an enabled and triggered subsystem only one time (single shot)
Does it really need be enabeld and triggered? Even if so, it should only run when triggered (and enabled), so if the trigger tr...

ungefär en månad ago | 0

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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...

ungefär en månad 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...

ungefär en månad ago | 0

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

ungefär en månad 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 ...

ungefär en månad 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; ...

ungefär 2 månader 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...

ungefär 2 månader ago | 0

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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...

ungefär 2 månader 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...

ungefär 2 månader ago | 2

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

ungefär 2 månader ago | 0

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