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Inverse fourier transfer of cos function with time shift
Hi Matt, Keep in mind that you are inherently dealing with a windowed cosine, x1(t) = cos(4*pi*t)*w(t), where w(t) = 1 for 0 <=...
ongeveer 2 uur ago | 0
Simulink Matlabfunction does not support Global Optimization toolbox
The MatlabFunction block always generates code, even in Normal mode. One option that may be workable is to implement your optim...
1 dag ago | 1
Switch Block: Can we disable Integer Round off option
Saturation block might be useful ...
1 dag ago | 0
One zero is missing in the result of c2d function uses 'matche'
sysc = tf(11,[1,1,0]) sysd=c2d(sysc,.1,'matched'); zpk(sysd) Is the addtional zero in the textbook also at z = -1?
4 dagen ago | 0
My Step Response plot from Matlab does not match the one from Simulink
Hi Javier, You might want to investigate the step size control options in Simulink. The plot looks a bit jagged, which suggests...
5 dagen ago | 0
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...
8 dagen ago | 0
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...
9 dagen 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 ...
10 dagen ago | 1 answer | 0
1
answerIFFT results in wrong frequency
The inverse Discrete Fourier Transform, as implemented by ifft, maps a signal from discrete frequency to discrete time. Each ele...
11 dagen ago | 0
| accepted
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...
12 dagen ago | 0
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...
14 dagen ago | 1
| accepted
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...
14 dagen ago | 2 answers | 0
2
answersSolve 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...
14 dagen ago | 0
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...
17 dagen 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...
18 dagen ago | 1 answer | 0
1
answerHow 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...
19 dagen ago | 0
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...
19 dagen ago | 2
| accepted
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...
20 dagen ago | 0
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...
26 dagen ago | 0
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 ...
ongeveer een maand 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...
ongeveer een maand ago | 1 answer | 0
1
answerQuestion
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)
ongeveer een maand ago | 0 answers | 0
0
answersMatrix 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);...
ongeveer een maand ago | 0
| accepted
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...
ongeveer een maand ago | 0
| accepted
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 <= ...
ongeveer een maand ago | 1
| accepted
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...
ongeveer een maand ago | 0
| accepted
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...
ongeveer 2 maanden ago | 0
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...
ongeveer 2 maanden ago | 0
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 ...
ongeveer 2 maanden ago | 0
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