Beantwortet
I have logged a signal from simulink to workspace in timeseries format and got 317 samples of that signal. Can i increase the number of samples i get or the sampling rate?
More samples of the logged signal can be collected by settng the Sample Time of the To Workspsace block to whatever sample time ...

mehr als 2 Jahre vor | 0

Beantwortet
How to plot this equation
syms U Delta beta T k_beta U = -Delta/2*tanh(beta*Delta/2) UoverDelta = U/Delta UoverDelta = subs(UoverDelta,beta,inv(k_beta*...

mehr als 2 Jahre vor | 0

Beantwortet
Derive function handle with a vector input argument
Hi Majeed, Maybe you're looking for something like this? q = [3 2 2 3]; p = sym('p',[1 4]); syms x y f = p(1)*x.^2+p(2).*y....

mehr als 2 Jahre vor | 0

Beantwortet
Load timeseries data from workspace for non-periodic data
In the Model Configuration parameters, change the Input field under Load From Workspace from ts to addsample(ts,'Data',ts.Data...

mehr als 2 Jahre vor | 0

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Beantwortet
how to use freqz function correctly
If x is a digitalFilter object, then freqz can be called as freqz(x,f,fs); where f is vector of frequencies of interest to vis...

mehr als 2 Jahre vor | 0

Beantwortet
How to get the value of slopes of pchip at the enpoints?
The doc page pchip (under the Output Arguments, pp section) shows how the interpolationg polynominal is formed for each interval...

mehr als 2 Jahre vor | 1

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Beantwortet
Struct as mask input
I did the following: 1) created a model child.slx. It has an Inport -> Gain -> Outport. The gain parameter is set to 'paramet...

mehr als 2 Jahre vor | 0

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Beantwortet
Getting complex solution with Matlab ode45
It looks like your differential equation is very sensitive (I mean that loosely) A=-4.32; B=4; C=1.2; D=0.8; a=0.2778; ode...

mehr als 2 Jahre vor | 0

Beantwortet
two output in one scope
The easiest way is to log each signal in their respective .mdl file, simulate each, and then plot from the base workspace.

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Frage

Why are the Corners Shaded in the Model Reference Block?
Consider the block diagram at this doc link for model referencing. Why are the corner triangles shaded in the block for Counter...

mehr als 2 Jahre vor | 1 Antwort | 0

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Antwort

Beantwortet
The problem with "contains"
Might not be faster, but .... LongStrings={'Apples are red' 'Lemons are yellow' 'Cucmbers are green' 'Some numbers are odd' 'Th...

mehr als 2 Jahre vor | 0

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Beantwortet
I my tried to use for loop to find a transfer function and root louces
I think that rlocus(TF3) clears the figure and then overwrites, so I think you're actually getting the root locus for the last v...

mehr als 2 Jahre vor | 1

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Beantwortet
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...

mehr als 2 Jahre vor | 0

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Beantwortet
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...

mehr als 2 Jahre vor | 1

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Beantwortet
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...

mehr als 2 Jahre vor | 0

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Beantwortet
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...

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Beantwortet
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...

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Beantwortet
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...

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Frage

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? ...

mehr als 2 Jahre vor | 1 Antwort | 0

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Antwort

Beantwortet
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...

mehr als 2 Jahre vor | 2

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

mehr als 2 Jahre vor | 0

Beantwortet
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...

mehr als 2 Jahre vor | 0

Beantwortet
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...

mehr als 2 Jahre vor | 3

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Beantwortet
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...

mehr als 2 Jahre vor | 0

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Beantwortet
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...

mehr als 2 Jahre vor | 1

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

mehr als 2 Jahre vor | 0

Beantwortet
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 ...

mehr als 2 Jahre vor | 0

Beantwortet
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; %...

mehr als 2 Jahre vor | 1

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Beantwortet
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...

mehr als 2 Jahre vor | 0

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Beantwortet
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(...

mehr als 2 Jahre vor | 0