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Trying to find square of "control system"
Declare the control gains and frequency as real. syms P_slozka real; % kp syms I_slozka real; %T_I syms D_slozka real; %T_D ...

約4年前 | 0

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Im trying to convolute a rect function and a sinc function
Because Gz is a variable, not a function, Gz(z) is trying to use the vector z as an index into the variable Gz. But z contains ...

約4年前 | 0

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design error of closed loop linear quadratic gaussian(LQG) regulator
Hi @Jun Seung Mun I think there are a few issues with the code. First, the plant should have at least one input for the control...

約4年前 | 0

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I want to replace more than 1 random words in a sentence with "___" using matrices. I can type it out long hand but want to avoid this.
Hi Cade, It would be helpful to include an example input and show what the desired output should be. As best I can tell, maybe...

約4年前 | 1

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Difference between lhsnorm and normrnd
The doc page for lhsnorm is surprisingly sparse. But it does talk about the multi-variable normal distribution, in which case si...

約4年前 | 0

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How do I reverse the effect of an integral block?
Hi Janith Are you sure the encoder is a pure differentiator? Even if it is, the simulation is likely to have problems with the...

約4年前 | 0

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Can FILTFILT(B, A, X) yeild the same results as FILTFILT(SOS, G, X) assuming inputs are generated via [z,p,k] = butter(3,Wn) + [sos,g] = zp2sos(z,p,k) and [A,B] = butter(3,Wn)
Hello Chris, Here's the code I ran (unknown to me, butter() assumes a bandpass by default with a two-element frequency vector, ...

約4年前 | 1

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Why does integrating my signal attenuate it?
Hi Janith, If the input to the integrator block is u(t) = sin(w*t), the output of the integrator will be y(t) = -1/w*cos(w*t) ...

約4年前 | 2

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What is the best way to make bodemag of multiple MIMO systems distinguishable? Markers?
Hi @Bruno Dogancic Here's some code to put an 'o' marker on every 10th data point. Adapt as needed to change markers, line styl...

約4年前 | 0

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How can i force simulink to use a set of data from another simulink model ?
Try using the sim() command instead of set_param. I had trouble with the latter, but no problems with the former. This code wo...

約4年前 | 0

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Is there a function like "y = filter(b,a,x,zi) uses initial conditions zi for the filter delays" in fftfilt? If not, what's the most efficient way to implement this?
Filtering is a linear operation so the iniital condition response and the input response can be computed separately and then add...

約4年前 | 1

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How to put this transfer function into simulink
The transfer function in question syms s H(s) = -(1 - 0.5*exp(-10*s))/(40*s + 1)/(15*s + 1) Starting from a single input sign...

約4年前 | 0

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How to get simplified, symbolic solutions for definite integrals
Declare x w to be real syms x w real fn1 = exp(-abs(x))*cos(w*x) int(fn1, x, [-inf inf])/sym(pi)

約4年前 | 0

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I am trying to use the rectangular pulse function, but I am not sure how to use it correctly to solve a Fourier problem.
Hi Connor, This question brings up some interesting aspects of Fourier analysis, and how transforms of the discrete-time sample...

約4年前 | 0

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Matlab and Routh criterion for evaluation of K for stability
Hi @omar khasawneh, Without a value for K I think you'll need to use the Symbolic Math Toolbox. Your code adapts easily. I did ...

約4年前 | 4

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Lsim inputs inversion provide the same result
Interesting. A quick look at the code, at least for the case where an output argument is specified, shows that the function tha...

約4年前 | 1

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FFT of the average vs average of the FFT
For a matrix input, fft() works down the columns. Maybe this: rng(100); S = rand(5); fft(mean(S,1)) % mean for each column,...

約4年前 | 0

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Continuous Convolution in Time Domain
Hello @Masoud Nateghi The code needs to use the full convolution sum to approximate the convolution integral. Also, because the...

約4年前 | 0

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Impulse and step response differences
Hello @Arcadius, The differential equation in the Question is ambiguously written. Your solution for the impulse response assum...

約4年前 | 1

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FFT of Gaussian filter in 1D
Hello @Donya Khaledyan The code in the question doesn't define t nor FGHE2, so the plots can't be recreated. Code below might b...

約4年前 | 1

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Find indices of multiple strings within another string
It looks like using string variables with an inner loop is much faster than a cell array with cellfun, at least here on Answers ...

約4年前 | 0

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How to do Pade approximation with different order of numerator and denominator in Matlab
The Sybolic Math Toolbox has a function pade() where the order of the numerator and denominator can be specified separately. The...

約4年前 | 0

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Root Locus system description at given point not showing up
Is there any chance that you have some local version of rlocus() that is shadowing the Control System Toolbox? What is the outpu...

約4年前 | 1

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Analog Bessel filter output problem (nan)
The num and den inputs to filtfilt() are for a discrete-time filter. But besself() returns the numerator/denominator for a cont...

約4年前 | 0

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Fourier expansion of dirac delta function
Increasing n to better approximate the infinte sum yields L=10; F0=10000; v0=1; t=4; x=-10:0.1:10; n=400; f=0; for i=1:n...

約4年前 | 0

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squeeze function returning "NaN"
squeeze() can't ignore anything. If the input to squeez() is 1 x 1 x 33 matrix of NaN, the ouptut will be 33 x 1 of NaN. What ...

約4年前 | 0

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Sum in two variables for response of NON-LTI discrete time system
Hi @ALESSIO MANIÀ 1. The loop should be over n, beause each time through the loop it should be computing y(ni), i.e., a single ...

約4年前 | 0

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How can I normalize my filter?
Hi @Amy Lg Why is fs defined and then multiplied by 1e9 in the call to bilinear? Which I guess might be o.k. but perhaps isn't...

約4年前 | 0

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質問

Is There a Way to disp a sym Double Subscript?
dips() works fine with a single subscript disp(str2sym("E_omega")) Double subscript looks odd disp(str2sym("E_omega_n")) Any...

約4年前 | 1 件の回答 | 0

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What does my Root Locus response mean? Why is it different?
Hello @Joel Okanta The root locus is much more general than as suggested in the Question. Given a system described by an open l...

約4年前 | 0