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Finding the modulus margin for three different open loop systems through matlab?
Hi Yarno, I'm not aware of any function that will compute the modulus margin (which is too bad). But one way to get what should...

13 Tage vor | 0

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Sinusoidal Frequency Response of a Transfer Function
If the system were bounded-input-bounded-output (BIBO) stable, then the steady state output in response to input y(t) = A*sin(w*...

13 Tage vor | 0

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Base Simulink doesn't have a block that implements functions cosd or cospi. Maybe some other toolbox does. If not, both of tho...

15 Tage vor | 0

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I cannot call parameter value from workspace to Simulink matlab function block
Hi @mg Make the function like this: function y = AAA( var1,param1) BB= var1 CC = param1 * BB y=CC Then, follow t...

16 Tage vor | 0

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Lsim function returns an array filled with Nan
Hi Gabriel, Recheck the model. As written it has two unstable poles way out in the right half plane. That will be very difficul...

16 Tage vor | 0

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How to get a minimal realization of the syms based expressions?
Hi Aditya Have you considered converting TF to an lti system object? Better yet, is there really a need to use symbolic math a...

16 Tage vor | 0

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How to implement a look up table in simulink which can accept variable SIZE data as inputs
@Ganesh Iyer Accroding to the doc, the LUT Dynamic block doesn't accept variable size signals. I tried the following approach,...

16 Tage vor | 1

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Solving system of 2 non linear equations
syms x y real eq1 = 0.00014/(3.85E-05*cos((x-y)*0.006))-(0.196*0.026*tan((x-y)*0.0062)*tanh(x*0.026))/0.006+0.196-0.00014/3.85E...

17 Tage vor | 0

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Inverse Z-Transform of F(z) How to set ROC?
No, we can't specify the ROC for iztrans, which always assumes the time domain sequence is causal. Same issue with ilaplace. Ho...

17 Tage vor | 0

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Riemann Siegel Theta Equation
Hi bil, Is this what you're looking for? syms t real theta(t) = angle(gamma(sym(1)/sym(4) +1i*t/2)) - log(sym(pi))/2*t tsol ...

18 Tage vor | 1

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Varying input into a transfer function in simulink
Hi Jake, It looks like you're tring to vary the value of A between runs, not during a run. In this case, I think you want some...

18 Tage vor | 0

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Flexible symbolic function definition
I'm still not sure what you want. Maybe this? syms a b c vars = [a b c]; len_vars = length(vars); % might want to use numel ...

19 Tage vor | 0

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How to convert from rad/sec to Hz in bode plot, and what can i understand from the bode plot shown?
To plot in Hz, rather than rad/sec. Option 1: %[m,p,w] = bode(Gvd); % w - rad/sec %f = w/2/pi; % f - Hz %subplot(...

19 Tage vor | 0

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How to Dynamically change Model Workspace variables for changing block parameters
Assuming the Question is in regards to this block, Rigid Transform, it seems that dynamically changing the parameters of the blo...

20 Tage vor | 0

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integration of a vector
I'm not sure what "sigma sign" is, but running here, without any manipulation of integrand, does not yield a result that contain...

21 Tage vor | 0

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Plotting a velocity vector field
Here is how you can plot what I thinkg your want using quiver3 over a 3D cube. Should be able to adapt it as needed. Check its d...

21 Tage vor | 1

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Operator '>' is not supported for operands of type 'tf'
Hi Salah Gvd is a transfer function. It looks like you want to evaluate Gvd at a set of frequencies and then operate on that re...

21 Tage vor | 0

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I need to resample the ECG signal at a lower frequency in order to apply some QRS detection algorithms
The following functions may be of interest: downsample , decimate , resample

22 Tage vor | 0

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SAMPLE TIME , SIMULATION TIME , STEPSIZE IN DETAIL
Assuming this Question is in regards to Simulink: SIMULATION TIME: Refers to the master clock of the Simulink simulation. SAMP...

23 Tage vor | 0

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Maybe this will help: Let's assume we have a simple FIR filter that takes the average of the current and two previous samples o...

24 Tage vor | 1

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Why wont the state-space block accept a mux input?
The B, C, and D matrices of the state space block indicate the state space model is expecting a single input to generate a singl...

25 Tage vor | 0

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Getting wrong frequency from fft compared to curve fit
Hi @lior fridman Assuming you're only interested in the magnitude of the DFT, it looks like everything is correct except for no...

28 Tage vor | 0

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Why am I receiving this error?
Assuming you want a numerical evaluation, check out these doc pages: log , exp

29 Tage vor | 0

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Implementation of varying-order integrator block in Simulink
Thanks for the link to the Varying Transfer Function block. I'm still not 100% sure what your're looking for. But maybe someth...

etwa ein Monat vor | 0

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A1. Gain and Position are block parameters. Position is a paramter that is common to all blocks. More info here Common Block Pro...

etwa ein Monat vor | 0

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Can I believe the values of these large integers?
What happens if you change this line to work in symbolic world? It will be slow .... (couldn't run here, exceeded the 55 second ...

etwa ein Monat vor | 0

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How can I triple integral the matrix k between -h/2 to h/2, -b/2 to b/2, -a/2 to a/2 wrt. z,y,x respectively?
Hi Ahmed Try int clc clear all E=70*10^6; v=0.3; p=50*10^3; h=0.01; a=0.5; b=0.5; syms x y z B=-h*[6*x*(b-2*y)/(a^(3)...

etwa ein Monat vor | 0

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Is there a way to change the value of the transfer function through MATLAB & Simulink?
Hi 영탁 한, My interpretation of your question is that you really have a second order, time varying system. Such a system can't be...

etwa ein Monat vor | 0

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Unable to perform assignment because the indices on the left side are not compatible with the size of the right side.
At line 45 the variable Ybuskron is a 2 x 2 matrix and E(i) is a 1 x 1 scalar. So their product is a 2 x 2 matrix, which is tryi...

etwa ein Monat vor | 0

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Digital Signal Processing Filters
Hi Mustafa, Not checking all of the code in detail, but I did notice that the fft plots don't look correct. They should be: f ...

etwa ein Monat vor | 0