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Undefined function 'dksyn' for input arguments of type 'ss'. Error in Report8 (line 41) [k, cl, bnd] = dksyn ( G, 1, 1)
According to the doc page dksyn, the first input to the dksyn has to be a uss model, not an ss model. Mabye G should be built us...

3年弱前 | 0

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Quicker way to subtract large vectors using a sliding window?
Hi goc3, Using filter seems to be a lot faster than the loop method 1 for Example 1. I didn't compare to the other loop method...

3年弱前 | 1

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Error in port widths or dimensions
The system has 3 inputs, 2 outputs, and 2 states. The gain multiplications by A, B, C, and D need to be matrix*vector multiplica...

3年弱前 | 0

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I need to find the transfer function of the close loop with the two variables gains using Simulink and math formulation
Hi ahmad, Neither Simulink nor the Control System Toolbox support any model with symbolic parameters. In both tools, everything...

3年弱前 | 0

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In between the years, a PISA question (nothing essential): The last digit of 7^190
Well, if 7^190 is larger than realmax, then using double precison won't work to just try to compute it. You could try the Symbol...

3年弱前 | 0

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How to add disturbance feedforward to LQI()
Hi John I don't udnerstand your observations absent additional information. If the control input includes the negative of the d...

3年弱前 | 1

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質問

Do Orphaned sym Objects in the Symbolic Engine Matter?
Suppose I execute the following code func a. Did I just create an object in the symbolic engine that I have no way to access? ...

3年弱前 | 1 件の回答 | 0

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gapmetric for MIMO LTI systems with unequal input and output dimensions
Hi Shivam, My interpretation of the doc page gapmetric is that the number of inputs to P1 has to be same as the number of input...

3年弱前 | 2

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Finding strings with common character
type Gfile.txt % assuming strings to return are space delimited text = split(string(fileread('Gfile.txt'))); unique(text(star...

3年弱前 | 0

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Add variable names to figure legends
Hi Ganesh, Add a second argument to the legend command % what you have figure h = plot(rand(3)); legend(h) % what you want...

3年弱前 | 0

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How to combine argument validation with varargin
My understanding from reading Avoid Using varargin for Repeating Arguments is that putting varargin into a Repeating arguments b...

3年弱前 | 3

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why the two split-step fourier methods using fft and ifft is equivalent ?
Let's take a simplified view of the loops in code1 and code2, and renaming the variables appropriately. Also, because of the way...

3年弱前 | 0

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Convert discrete sys to continuous sys using delays using linear-fractional transformation (LFT)
Hi Joan, I reviewed the link from the julia site and I think I know what they're doing. But I'm not 100% sure because it seems...

3年弱前 | 1

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Matlab step() from Simulink dataset
Based on the picture of the Simulink model .... sys = linearize('SIM_lab5'); step(sys)

3年弱前 | 0

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Im trying to replicate a simulink design, i dont know what the blocks y and u are in the library browser.
Those both look like To Workspace blocks used for logging data to the Matlab workspace for inspection/processing/etc. after the ...

3年弱前 | 0

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when do I need use fftshift?
Hi Daniel, Let's plot the first function Bx = 10; A = sqrt(log(2))/(2*pi*Bx); fs = 500; %sampling frequency dt = 1/fs; %...

3年弱前 | 1

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I want to find the root locus of polynomial.
Running the code m_s = 5; % Mass of the spring m_r = 68; % Mass of the rotor k_r = 5.45e5; % Spring constant of the roto...

3年弱前 | 0

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how to express operators in symbolic algebra
I'm not sure how define a function of a function. But this seems to work, at least for this simple case: syms x t syms q(t) v(...

3年弱前 | 0

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How can I fix this problem?
The variable x is defined at the top of the code to have 4 rows. In the loop that calls fsolve, x0 is defined with four elements...

3年弱前 | 0

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Fourier Series for odd integers only
Hi Tashanda, I see a couple of issues with the code Though not an error, it would be clearer if you specified the variable of ...

3年弱前 | 0

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How can I extract the x and y values of the phase- and magnitude graph of a .fig file plotted with bodeplot() or bode()?
sys = tf(1,[1 1]); bode(sys); hf = gcf; hax = hf.Children hax(2).Children % the first child is the phase plot hax(2).Child...

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Error using fft Invalid data type.
Hi Koray, It looks like you have a signal f(t) that is defined over the interval 0 <= t <= 1.5 as: syms t; K = 20; %35; Chan...

3年弱前 | 0

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I want to get the value of x using the Matlab code "Out = fzero(@(x) (A-sqrt(2*pi*H*E*x*((x/E)+(x/F)^1/G))), 1000000)", but not getting the correct answer. Could you help me?
Seems to work here just fine. Why do you think you're not getting the correct answer? A = 20627000; E = 210000000000; F = 122...

3年弱前 | 0

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D/A converter delay transfer function
That doesn't look like the typical D/A converter ..... But, assuming T is negative you can simulate the delay of -T/2 with a Tr...

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Cannot plot negative frequencies on Nichols with recent MATLAB versions
Hi lepolonais03. Test case shows that only positive frequencies are considered, as you've obeserved. sys = zpk(1,[2 3],4); w=...

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how to create a look up table to use in simulink from a 2D array of doubles
Assuming your 40x2 array is stored in a workspace varaiable named data. Use the 1D Lookup Table. Set the Table Data parameter ...

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I want to know Block Diagram for "rlocus(G)" and how they calculate the overshoot of the graph.
(1) Yes, rlocus(G) fits the architecture you have. If "I can see overshoot" means that you're clicking on a branch on the root ...

3年弱前 | 0

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pzmap and bode do not return zeros for all specified outputs
Hi Marcel, There isn't really a problem. If you want to get the pzmap of each individual transfer function of MIMO system, then...

3年弱前 | 0

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why my discretized PID controller behaves differently than my continuous (unfiltered) PID?
Hi Israel, Let's take a look at the problem analytically. Define the plant and controller s = tf('s'); P = tf(1/(s^2 + s)); ...

3年弱前 | 0

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Is there anyway to increase the calculation speed of this sqrt integral2 without loosing accuracy?
The iterated method works much faster as compared to auto (which I assume goes to tiled). Unclear why iterated integral2 is slow...

3年弱前 | 0