Answered
Plotting the convolution of u(t) * dirac(t)
Hi Jeremy, The equation for the convolution integral in the Question is incorrect. The argument of u inside the integral should...

3 years ago | 1

Answered
exp( ) gives unexpected answer for (2,2) input
Seems to give the expected result? a= [1.4142 1.4121; 1.4142 1.4121] exp(j*2*pi*a*10^3)

3 years ago | 0

Answered
Hi all,I want to use matlab to calculate the exponential integral,I know that the official function ExpIntegralE in Mathematica can calculate it.
ExpIntegralE in Mathematica seems to be the same as the two-argument form of expint in the Symbolic Math Toolbox.

3 years ago | 0

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Answered
How do I take the average of elements of a vector depending on the values of another vector?
This common workflow is discussed here: splitapply A = [2 3 2 2 3 4 3 3]; B = [0.1 0.2 0.22 0.13 0.07 0.88 0.3 0.5]; [G,ID]=f...

3 years ago | 0

Question

filtfilt Does Not Perform Zero-Phase Filtering. Does It Matter?
The doc page for filtfilt claims that the function "performs zero-phase digital filtering" and then goes on to describe the expe...

3 years ago | 1 answer | 0

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answer

Answered
Using root function to complete the turning point function that solves the derivates of a polynomial
Hi Laidog, I suggest starting with this doc page. It will show how to reperesent and analyze polynomials in Matlab and contains...

3 years ago | 0

Answered
How can I create the MATLAB code for the same result when the result is implemented in Simulink about State-Space equation solving?
Set tspan = t_P; for the call to ode45

3 years ago | 0

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Answered
Sum of series (symsum) in Simulink
I was able to get a workable soluion using only Simulink blocks by setting up the equation and solving for mu with an Algebraic ...

3 years ago | 0

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Answered
Solution of differential equation
Simulink provides many optiions for exporting simulation data to the Matlab workspace, after which one can anlayze it, process i...

3 years ago | 0

Answered
Finding the H infinity norm of a system
Following up on this comment ... Can the equations not be writen in state space form only because it's impractical to do so, or ...

3 years ago | 0

Answered
Constant block doesn't accept array
What is the value of A in the base workspace? Or whatever workspace it lives in. Note that “A” in the From and GoTo blocks ha...

3 years ago | 0

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Answered
Deconvolution of signal 1 from a known signal 2
I'm pretty sure that any DFT (fft()) based method will have limitiations, but we can try as follows. Assume that the system mod...

3 years ago | 1

Answered
I want to plot a complex function f(z) in 3D
f(z) can be defined by: f = @(z) conj(z)./z; As for the plot, that depends on the kind of plot that's desired. Here's a plot ...

3 years ago | 0

Answered
Step change in model parameters - simulate load step response with internal states as starting point
Hi J B, Example system sys1 = rss(2); Use step to generate the initial step response and collect the state variables [y1,t1,...

3 years ago | 0

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Answered
I designed a filter in matlab, but it's pass band seems to be central symmetry.
HI 瑶何 Hard to say much without seeing the actual data or the full code used to generate the plots. Having said that, it appear...

3 years ago | 0

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Answered
Define matrix array as functions
If you're trying to store M1 for all values of n, then M1 needs to be 2 x 2 x n M1(:,:,n) = [M1a(n) M1b(n);M1c(n) M1d(n)]; Con...

3 years ago | 0

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Answered
Solution for the multiple repetition of Simulink simulation
Check out Simulation in the doc. The links from that page should provide lots of relevant information.

3 years ago | 1

Answered
How do I obtain the transfer function of this model? Simulink Linearization
Hi Jacob, The Simulink linearization is coming up with the correct answer as far as I can tell: r3=0.0254; %R3 (meters) r2=0....

3 years ago | 0

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Answered
How can I compute structured singular value with repeated full complex blocks as allowable structured uncertainty
I think the model can be refactored so that instead of having three, Ny x 3*Ny full block uncertainties you have 3*Ny^2 diagonal...

3 years ago | 0

Answered
Frequency input to Transform Function
Hi Nerma, Check freqresp. The second argument should be a real vector of frequencies (typically > 0). The multiplication by 1j ...

3 years ago | 0

Answered
How to solve a system of linear homogeneous equations in which the unknowns are column matrices?
Hi Celso Accroding to linsolve: "If the system does not have a solution, linsolve issues a warning and returns X with all eleme...

3 years ago | 0

Answered
Vertical line for Bode plots
Hi, Nerma, xline draws the line in the current axes, which appears to be the phase axes, which aren't visible. So we can do thi...

3 years ago | 1

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Answered
Plotting the distance between 2 time stamped sets of 100hz Navigation data (difference in Latitude & Longitude)
Hi John, As always, it's best to post some sample data and code and then explain what you think isn't working or what you'd lik...

3 years ago | 0

Answered
How to plot the movement of system roots(poles) with variations to a free system variable
Hi Sohail, Let's let a2 = 1; a1 = 1; We can still set up the problem for using root locus sys = tf(1,[a2 a1 0]); % D(s) = 0 ...

3 years ago | 0

Answered
Why does yulewalk produce an unexpected dip in the middle?
Hi Nathan, Here's the original code from the question. % Get data clc;clear;close;format compact; format short g; Fs = 48000...

3 years ago | 0

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Answered
Solving a system of equations
Hi Mitra Maybe this will extend to the larger problem. syms x1 y1 z1 x2 y2 z2 syms a [1 20] A=[x1,y1,z1,0,0,0,1].'; B=[a1,a...

3 years ago | 0

Answered
How to return function arguments as a struct?
Change the signature of the function to function out = designSpec(varargin) At the bottom of the function assign to the struct...

3 years ago | 0

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Answered
When simulating the response to a specific input signal, the input data U must be a matrix with as many rows as samples in the time vector T
Hi Federico, If sysansq_equi.B has five columns then INPUT_equi must also have five columns. Also, the number of rows of INPUT_...

3 years ago | 0

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Answered
How to concatenate elements in cell array to a vector?
Q= [23 34; 44 55; 56 71; 63 49; 71 30]; B= [12 13; 10 99]; C{1}=Q; C{2}=B; Output = reshape(vertcat(C{:}).',1,[])

3 years ago | 1

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Answered
FFT convolution and iFFT process
Hi Yassine, What does this mean: "df (can be variable),"? df should be a constant for all of FT. Is that not the case? Let's...

3 years ago | 0