Answered

Application of multistage decimator filter to signal

As shown at designMultistageDecimator, this function retruns a dsp.FilterCascade object M = 48; Fin = 30.72e6*M; Astop = 90; ...

Application of multistage decimator filter to signal

As shown at designMultistageDecimator, this function retruns a dsp.FilterCascade object M = 48; Fin = 30.72e6*M; Astop = 90; ...

4 months ago | 0

Answered

Simulink Model to transfer function via simulink and Matlab

Hi Yuval, What is the setting for the c parameter in the Derivative blocks? If it's the default (inf), those blocks will linea...

Simulink Model to transfer function via simulink and Matlab

Hi Yuval, What is the setting for the c parameter in the Derivative blocks? If it's the default (inf), those blocks will linea...

4 months ago | 0

| accepted

Answered

In Simulink, why do two unrelated modules affect each other?

Even if A and B are not connected, changes in B can causes changes in output of A because those changes in B can affect the step...

In Simulink, why do two unrelated modules affect each other?

Even if A and B are not connected, changes in B can causes changes in output of A because those changes in B can affect the step...

4 months ago | 0

Answered

Create Variable in Simulink block that contains 63 elements.

Hi David, Question is a bit unclear. As shown, it appears the model has 63 separate Sine Wave blocks. That means each time th...

Create Variable in Simulink block that contains 63 elements.

Hi David, Question is a bit unclear. As shown, it appears the model has 63 separate Sine Wave blocks. That means each time th...

4 months ago | 0

| accepted

Answered

Shiftet values of omega in bode plot as result from generating idfrd() and tfest()

If fre is in Hz, then this line frerad = fre.*(pi/180); should be freqrad = fre*2*pi; to convert to rad/sec

Shiftet values of omega in bode plot as result from generating idfrd() and tfest()

If fre is in Hz, then this line frerad = fre.*(pi/180); should be freqrad = fre*2*pi; to convert to rad/sec

4 months ago | 0

| accepted

Answered

Name a dataset that will be used in Simulink

Hi David, The 'unnamed' in that block is the name of the signal, not the dataset. f0 = 60; % Fundamental frequency in Hz samp...

Name a dataset that will be used in Simulink

Hi David, The 'unnamed' in that block is the name of the signal, not the dataset. f0 = 60; % Fundamental frequency in Hz samp...

4 months ago | 1

| accepted

Answered

Poisson CDF output is all one value

Hi Michael, The Poisson Distribution is a distribution of a discrete random variable that takes on only integer values >= 0. Fo...

Poisson CDF output is all one value

Hi Michael, The Poisson Distribution is a distribution of a discrete random variable that takes on only integer values >= 0. Fo...

4 months ago | 0

| accepted

Answered

Struct array with differently sized fields as parameter data for Simulink simulation

Hi Friedrich, Using 2022a (so there might be some updates in this area if using a later version), the Matlab Fucntion block can...

Struct array with differently sized fields as parameter data for Simulink simulation

Hi Friedrich, Using 2022a (so there might be some updates in this area if using a later version), the Matlab Fucntion block can...

4 months ago | 0

| accepted

Answered

Can you create an object in Simulink that can be referenced by multiple MATLAB Fcn blocks?

Hi Roop, If you want to use global data inside Matlab Function blocks, start from Use Global Data in MATLAB Function Blocks to ...

Can you create an object in Simulink that can be referenced by multiple MATLAB Fcn blocks?

Hi Roop, If you want to use global data inside Matlab Function blocks, start from Use Global Data in MATLAB Function Blocks to ...

4 months ago | 0

Answered

Is there a way to log variables from a Matlab Function Block (in Simulink), that is not output?

Here's one option based on the idea of @Aquatris to specify the local variables that you want to log from the Matlab Function as...

Is there a way to log variables from a Matlab Function Block (in Simulink), that is not output?

Here's one option based on the idea of @Aquatris to specify the local variables that you want to log from the Matlab Function as...

4 months ago | 0

| accepted

Answered

how to import parameters (weights and bias) in simulink

Hi Ahmad, To bring fc1, fc2, fc3 and fc4 into the Malab function block as constant parameters, start from Configure MATLAB Fun...

how to import parameters (weights and bias) in simulink

Hi Ahmad, To bring fc1, fc2, fc3 and fc4 into the Malab function block as constant parameters, start from Configure MATLAB Fun...

4 months ago | 1

Answered

Using logicals in arrayfun

rng(100) tempA = rand(10,18); tempB = 1:10; u = arrayfun(@(x,y) x{1}(1:y), num2cell(tempA,2), tempB.', 'UniformOutput', fals...

Using logicals in arrayfun

rng(100) tempA = rand(10,18); tempB = 1:10; u = arrayfun(@(x,y) x{1}(1:y), num2cell(tempA,2), tempB.', 'UniformOutput', fals...

4 months ago | 1

Question

How does Symbolic diff() Operate When the Order of Derivative is Symbolic?

Simple symbolic function syms n integer positive syms x real f(x) = x^n First, second, and sixth (just to check) derivatives...

4 months ago | 1 answer | 0

Answered

How to continually clock in data during a simulation within Simulink

Hi Dan, It appears that the output of the Bit to Integer Conversion block is a scalar, which can be checked by going to Debug -...

How to continually clock in data during a simulation within Simulink

Hi Dan, It appears that the output of the Bit to Integer Conversion block is a scalar, which can be checked by going to Debug -...

4 months ago | 0

Answered

Why such a fuss with ndgrid and meshgrid issues?

Hi Kristoffer, The inputs to griddata that can be in either meshgrid or ndgrid format are the query points in Xq and Yq. I thin...

Why such a fuss with ndgrid and meshgrid issues?

Hi Kristoffer, The inputs to griddata that can be in either meshgrid or ndgrid format are the query points in Xq and Yq. I thin...

4 months ago | 1

Answered

How to add a time delay to a diagonal ss from a reside pole function?

Hi Joan, The problem appears to be with how bodeplot is unwrapping the phase. Here is the original code % Delay problem Ak =...

How to add a time delay to a diagonal ss from a reside pole function?

Hi Joan, The problem appears to be with how bodeplot is unwrapping the phase. Here is the original code % Delay problem Ak =...

4 months ago | 0

| accepted

Answered

how to label the variance decomposition table

Check the doc page collintest and review how to use the VarNames input. Or, instead of pulling all the variables out from data,...

how to label the variance decomposition table

Check the doc page collintest and review how to use the VarNames input. Or, instead of pulling all the variables out from data,...

4 months ago | 1

| accepted

Answered

PID controller, difference when graphing step function with PID control block in matlab and simulink

Hi hoang, The posted code doesn't result in the same figure as in the question s =tf('s'); g = 1.883e5/(s*(s^2+4466*s+6.43e6)...

PID controller, difference when graphing step function with PID control block in matlab and simulink

Hi hoang, The posted code doesn't result in the same figure as in the question s =tf('s'); g = 1.883e5/(s*(s^2+4466*s+6.43e6)...

4 months ago | 1

Answered

how to calculate singular values in collin test to detect multicollinearity

Hi NAFISA, Using the example from the the doc collintest load Data_Canada Output from collintest [sValues,condInx] = collint...

how to calculate singular values in collin test to detect multicollinearity

Hi NAFISA, Using the example from the the doc collintest load Data_Canada Output from collintest [sValues,condInx] = collint...

4 months ago | 1

Answered

FFT multiple input waves and plot on same graph

%% Input Signal fs = 20e3; numFilts = 32; % filter_number = numFilts; freq1 = 1000; % Hz Nperiods = 15; % we need more th...

FFT multiple input waves and plot on same graph

%% Input Signal fs = 20e3; numFilts = 32; % filter_number = numFilts; freq1 = 1000; % Hz Nperiods = 15; % we need more th...

4 months ago | 0

| accepted

Answered

How does nufft function work in matlab?

To get fft and nufft to yield the same results .... tmax = 12; n = 2^11; tau = 1; % Width of the gaussian pulse ...

How does nufft function work in matlab?

To get fft and nufft to yield the same results .... tmax = 12; n = 2^11; tau = 1; % Width of the gaussian pulse ...

5 months ago | 0

Answered

Temporarily Change Signal Line Names in Simulink

Hi Dhruv, At the risk of asking an obvious question, does the workflow require that the model be saved after modifying the gene...

Temporarily Change Signal Line Names in Simulink

Hi Dhruv, At the risk of asking an obvious question, does the workflow require that the model be saved after modifying the gene...

5 months ago | 0

Answered

Why do these methods to obtain the simulink model transfer functions return different results?

Hi BW, Define PI and F s = zpk('s'); PI = 1 + 2/s; F = 6; In the first case, the linerarizer computes the transfer functio...

Why do these methods to obtain the simulink model transfer functions return different results?

Hi BW, Define PI and F s = zpk('s'); PI = 1 + 2/s; F = 6; In the first case, the linerarizer computes the transfer functio...

5 months ago | 1

| accepted

Answered

Simulink 3D matrix interpolation using pre-lookups

Hi Alborz, It looks like you're switching between 6x5 and 5x6 in your post. Assumign that a) the table is 6 x 5 x 2 as in the ...

Simulink 3D matrix interpolation using pre-lookups

Hi Alborz, It looks like you're switching between 6x5 and 5x6 in your post. Assumign that a) the table is 6 x 5 x 2 as in the ...

5 months ago | 0

| accepted

Answered

Are there any alternatives to try/catch statements that are supported by code generation?

Hi Roop, Can you post the code of a simple Matab Function that illustrates how you're tyring to use a try/catch? I'm having tro...

Are there any alternatives to try/catch statements that are supported by code generation?

Hi Roop, Can you post the code of a simple Matab Function that illustrates how you're tyring to use a try/catch? I'm having tro...

5 months ago | 0

| accepted

Answered

Reconstruct time series from FFT components. There is a time shift error.

Hi Haifei, You may want to investigate why the data is not uniformly sampled and how that impacts the analysis. Does the other ...

Reconstruct time series from FFT components. There is a time shift error.

Hi Haifei, You may want to investigate why the data is not uniformly sampled and how that impacts the analysis. Does the other ...

5 months ago | 0

| accepted

Answered

Simulink - How to create a conditional "if" block

Perhaps you can use a Relay block to model the desired behavior based on the heating/cooling analogy. The output of the Relay ca...

Simulink - How to create a conditional "if" block

Perhaps you can use a Relay block to model the desired behavior based on the heating/cooling analogy. The output of the Relay ca...

5 months ago | 0

| accepted

Answered

Why do we use ifft instead of fft when looking at the spectrum of a sech pulse (uu) in this code?

Hi Siheon, Your interpretation of fft as going from time to frequency, and ifft as going from frequency to time, with fft and i...

Why do we use ifft instead of fft when looking at the spectrum of a sech pulse (uu) in this code?

Hi Siheon, Your interpretation of fft as going from time to frequency, and ifft as going from frequency to time, with fft and i...

5 months ago | 0

| accepted

Answered

Is enabled subsystem confusing? (Enable Port)

Hi Ahmed, To me that looks like an error in the documentation. That parameter controls what happens to the states inside the su...

Is enabled subsystem confusing? (Enable Port)

Hi Ahmed, To me that looks like an error in the documentation. That parameter controls what happens to the states inside the su...

5 months ago | 0

| accepted

Answered

Discrete convolution in time/Laplace domain

Simplest and most efficient approach would be to compute samples r_i = r(i*T) where T is the sampling period and then use conv t...

Discrete convolution in time/Laplace domain

Simplest and most efficient approach would be to compute samples r_i = r(i*T) where T is the sampling period and then use conv t...

5 months ago | 1

| accepted