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Discrete Transfer Function Truncating Signal?
If the sample time of the DTF block is 0.3, and the simulation runs for 20.1 - 20.39999999 seconds, there should be 20.1/0.3 = 6...

4年弱前 | 0

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Simplify Transfer Function Matrix from State Space Form
Hi Diego, It looks like the code used the Symbolic Math Toolbox? If so, there's no need to go that route unless you really nee...

約4年前 | 0

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nufft wrong result ?
Hello Kraka, Have you tried setting up your query points to exactly include f = 0.025? Also, it wasn't clear why the plot comma...

約4年前 | 0

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How to find the eigenvectors for multiple degree of system?
Hello KG, Divide each mode shape by its first element so that the first element of each mode shape is unity. M=[3 2 1;2 2 1;1 ...

約4年前 | 1

質問

Does ArrayValued Affect the Efficiency of Integral()
Suppose I want to numerically integrate a function of a scalar that returns a vector f = @(x) [1 ; sin(1000*x)]; To integrate ...

約4年前 | 1 件の回答 | 1

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mirroring a magnitude response of a filter from -1 to 1
freqz() takes a third input that allows you to specify the frequency vector. n1= 15; %order Fs= 100; %sampling frequency fc= ...

約4年前 | 0

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How to reformat the display output precision of e.g. the TF() function?
EDIT 22 Oct 2022: Updated code to fix a bug where the leading coeficient of a polynomial is -1. followed by digits after the de...

約4年前 | 1

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partial sum of a series
Hi SSBGH, To plot the function, we need a set of x-values to plot over. As you've done, define the function and the CFS coeffi...

約4年前 | 0

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Fourier coefficients of a function
Hi SSBGH If you want a closed form solution, use the symbolic toolbox to define f(x) syms x f(x) = .... Once you have that y...

約4年前 | 0

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Fast Fourier Transform function
The code in the question is plotting R vs index, but it sounds like the goal is to plot R vs frequency (Hz). So we need to comp...

約4年前 | 1

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How do I keep f as a variable in a state space model, as f is supposed to be the input variable??
Hello Arya, Assuming that f(t) is the input to the system, it is not included in the B-matrix. Rathe, the B-matrix should be: ...

約4年前 | 0

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Undefined function 'hinfnorm' for input arguments of type 'tf'.
Hi Kashish, If you don't have the Robust Control Toolbox for hinfnorm(), you can probably use sigma() from the Control Systems ...

約4年前 | 0

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Plotting Root Locus In matlab with K being a positive integar
Can use r = rlocus(sys,K) where sys is the transfer function with numerator of 1 and K is a vector of positive integers of int...

約4年前 | 0

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I am getting unrealistic values using vpasolve
I had to rearrange the second and third equations to muliply through by Vcl and sqrt(f) respectively and restrict the range of t...

約4年前 | 1

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Fourier series plotting and improving
Hi Faisal Running the code: syms n t T = 2; w = 2*pi/T; % Exponential Fourier series C(n) = (1/T)*(int(4*exp(-1i*w*n*t),t,...

約4年前 | 0

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What determines the maximum frequency when taking the FFT?
Hi L'O.G. If X is the output of Matlab's fft() function, then the corresponding frequency vector is: N = numel(X); wn = (0:(N...

約4年前 | 0

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I am trying to plot an input function u(t) along a time interval [0,1] but I keep getting errors when i try to plot. Can anyone help me fix the code so it can plot?
Hello Royson, Looks like some sort of control problem involving the controllability Gramian? Maybe this is what you're looking ...

約4年前 | 1

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Symbolically solving vectors simultaneously
q0 = sym('q0_',[1 3]) moment=[5*q0(1)+25 6*q0(2)+45 5*q0(3)+45] solve(moment==0,q0)

約4年前 | 0

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NEED HELP with fir1
Hi Justin, Executing the top part of the code ... f1 = 100; f2 = 300; f3 = 800; fs = 5000; m = (0.3*f1)/(f2/2); M = rand...

約4年前 | 0

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Why does h2syn double the number of states?
Hey Ali, Both of those functions produce a dynamic controller that has the same number of states as the plant. So the resulting...

約4年前 | 0

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Trouble finding more than one solution with solve
Here's a brute force approach that at least seems to give a reasonable result for V0 = 0. This code runs very slowly because erf...

約4年前 | 0

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Need help initializing variable x and plotting probability density function
Hi Stirling, To plot the curve mean = 1930000; standardDeviation= 64000; % note theat ^2 is changed to .^2 for elementwise o...

約4年前 | 1

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how can I plot a bode plot of transfer function that has one variable that changes the frequency response?
Tunable Models might be worth a look. They basically let a single model be defined with a one or more parameters that have defau...

約4年前 | 1

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symbolic integration needed in the present code
syms h q x f(x) f0 f1(x) f2(x) f3(x) f = f0 + f1*q + f2*q.^2 + f3*q.^3; Eq0 = diff(f,x) - diff(f0,x); Eq1 = diff(f,x) - f^2; ...

約4年前 | 0

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sum of dirac delta function
syms d(x) t d(x) = dirac(x); t0 = 1:3:10; % a couple of terms for example y(x) = sum(d(x-t0))

約4年前 | 0

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Why is tan(a) not equal to sin(a)/cos(a)
It's kind of a pain, but .... syms b alpha eq1 = b == sin(alpha)/cos(alpha); eq1 = rewrite(eq1,'tan') eq1 = lhs(eq1) == simp...

約4年前 | 0

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Need help finding the stability of a closed loop system and storing the values.
Assuming continuous time: Gred = tf([7.385,476.7],[1,19.39,491.5,3835,0]); Kp = 0:1:200; Kd = 0:1:10; Preallocate the matrix...

約4年前 | 3

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Solving a symbolic equation for a vector
For each value of theta, there are four solutions, two of which are the trivial zero solution. All solutions can be saved in a c...

約4年前 | 0

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Finding solution of an equation containing symbolic parameters. I want solution of one symbolic parameter in terms of another
Not sure why solve doesn't work as is. See below for one approach to a solution. syms c_1 c_2 D r_t %Parameters sig = 0.2; p...

約4年前 | 1

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Which is the correct transfer function notation?
Good catch. The documentation is incorrect. Assuming that sys represents the desired system, it should be entered as sys = tf(...

約4年前 | 0

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