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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)...

3 mois il y a | 1

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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...

3 mois il y a | 1

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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...

3 mois il y a | 0

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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 ...

3 mois il y a | 0

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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...

3 mois il y a | 0

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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...

4 mois il y a | 1

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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 ...

4 mois il y a | 0

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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...

4 mois il y a | 0

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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 ...

4 mois il y a | 0

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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...

4 mois il y a | 0

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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...

4 mois il y a | 0

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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...

4 mois il y a | 0

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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...

4 mois il y a | 1

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Is the "kinematicTrajectory" function correct for calculating angular velocity?

Hi Erik, The code is comparing two different quantities: Here, T is the matrix that mutliplies the angular velocity vector res...

Is the "kinematicTrajectory" function correct for calculating angular velocity?

Hi Erik, The code is comparing two different quantities: Here, T is the matrix that mutliplies the angular velocity vector res...

4 mois il y a | 0

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Extracting Data from an Array of Arrays using a Loop?

Hi Kylen, To make sure I understand correctly .... at the end of the processing you have a variable called 'out' and it is an a...

Extracting Data from an Array of Arrays using a Loop?

Hi Kylen, To make sure I understand correctly .... at the end of the processing you have a variable called 'out' and it is an a...

4 mois il y a | 0

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How to use previous answer in new calculation n times

A=[0.3 -0.2; -0.6 0.8]; B=[-14;2]; x=[1;2]; sys = ss(A,B,eye(2),0,-1); y = lsim(sys,ones(11,1),0:10,x); % y0 = x %y...

How to use previous answer in new calculation n times

A=[0.3 -0.2; -0.6 0.8]; B=[-14;2]; x=[1;2]; sys = ss(A,B,eye(2),0,-1); y = lsim(sys,ones(11,1),0:10,x); % y0 = x %y...

4 mois il y a | 2

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Frequency response of a system operating at a fixed frequency

Hi Alberto, Conceptually, what you're doing is correct (though there are other alternatives to the input signal). Keep in mind ...

Frequency response of a system operating at a fixed frequency

Hi Alberto, Conceptually, what you're doing is correct (though there are other alternatives to the input signal). Keep in mind ...

4 mois il y a | 1

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Designfilt and bandstopfir adds +320dB for some reason

Hi Andres, I don't have a complete answer, just an observation. Here's the original design with order 301 filterObject1 = des...

Designfilt and bandstopfir adds +320dB for some reason

Hi Andres, I don't have a complete answer, just an observation. Here's the original design with order 301 filterObject1 = des...

4 mois il y a | 0

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hey so i need to repeat the code everytime to see and analyze the time responses for 20 different values of k. How can i do it at once and have the output for all the values?

Or use a model array plant = tf(20,[1 1 5]); k = realp('k',1); sys = feedback(k*plant,1); sysarr = sampleBlock(sys,'k'...

hey so i need to repeat the code everytime to see and analyze the time responses for 20 different values of k. How can i do it at once and have the output for all the values?

Or use a model array plant = tf(20,[1 1 5]); k = realp('k',1); sys = feedback(k*plant,1); sysarr = sampleBlock(sys,'k'...

4 mois il y a | 1

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Even & Odd Discrete time Signals

Matlab doesn't support zero or negtaive indices, so it won't be possible to implement this operation using ordinary vector index...

Even & Odd Discrete time Signals

Matlab doesn't support zero or negtaive indices, so it won't be possible to implement this operation using ordinary vector index...

4 mois il y a | 0

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Digital filter with lowpass, then filtfilt: different output

lowpass calls filtfilt (or executes code equivalent to filtfilt) only if the underlying filter is IIR. If it's FIR, as in the qu...

Digital filter with lowpass, then filtfilt: different output

lowpass calls filtfilt (or executes code equivalent to filtfilt) only if the underlying filter is IIR. If it's FIR, as in the qu...

4 mois il y a | 0

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Assertion block does not stop simulation if I run the model with "sim" function

According to this doc page, pausing a simualtion while it's running is not supported when using the sim command. If in your act...

Assertion block does not stop simulation if I run the model with "sim" function

According to this doc page, pausing a simualtion while it's running is not supported when using the sim command. If in your act...

4 mois il y a | 0

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HELP! Error using plot Vectors must be the same length. Error in Doc (line 94) plot(t, y);

Hi Matheus, The explanation for the error is that the fftm function is doing a "one-sided" FFT, hence it returns an output with...

HELP! Error using plot Vectors must be the same length. Error in Doc (line 94) plot(t, y);

Hi Matheus, The explanation for the error is that the fftm function is doing a "one-sided" FFT, hence it returns an output with...

4 mois il y a | 0

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Scaling of Filter Coefficients in "fir1" function

For a FIR filter H(z) = b0 + b1*z^-1 + b2*z^-2 .... + b_n*z^(n-1) its frequency response is H(w) = b0 + b1(exp(-1j*w) + b2*e...

Scaling of Filter Coefficients in "fir1" function

For a FIR filter H(z) = b0 + b1*z^-1 + b2*z^-2 .... + b_n*z^(n-1) its frequency response is H(w) = b0 + b1(exp(-1j*w) + b2*e...

4 mois il y a | 0

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The real implementaion of the C2D function "Control Systems Toolbox"

Hi Youssef, There are two files named c2d.m which -all c2d I believe the code listed in the question is of the former. The la...

The real implementaion of the C2D function "Control Systems Toolbox"

Hi Youssef, There are two files named c2d.m which -all c2d I believe the code listed in the question is of the former. The la...

4 mois il y a | 0

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How does one solve equations between symbolic functions for functions

Maybe isolate is the solution ... syms z(t) theta(t) r eqn = z(t)-r*sin (theta(t)) == 0 z(t) = rhs(isolate(eqn,z(t)))

How does one solve equations between symbolic functions for functions

Maybe isolate is the solution ... syms z(t) theta(t) r eqn = z(t)-r*sin (theta(t)) == 0 z(t) = rhs(isolate(eqn,z(t)))

5 mois il y a | 0

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Question

Why Does numel() Accept More than One Argument?

@doc:numel indicates that the function accepts only a single argument. But it can be called with more than one argument and it r...

5 mois il y a | 1 réponse | 1

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Force symbolic simplification to eliminate variable

Hi ludolfusexe, Try equationsToMatrix load ddddh_fun symvar(ddddh_fun) syms u % A*u = b [A,b] = equationsToMatrix(ddddh_fu...

Force symbolic simplification to eliminate variable

Hi ludolfusexe, Try equationsToMatrix load ddddh_fun symvar(ddddh_fun) syms u % A*u = b [A,b] = equationsToMatrix(ddddh_fu...

5 mois il y a | 0

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Band-pass filter extraction.

Hi Claudio, Start with the original code Inertial_period = 20.215; K1_period = 24; % K1 period (hours) M2_period = 12; In...

Band-pass filter extraction.

Hi Claudio, Start with the original code Inertial_period = 20.215; K1_period = 24; % K1 period (hours) M2_period = 12; In...

5 mois il y a | 1

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How to make variables assigned to SimulationInput object accessible to a PostSimFunction when using parsim

Hi Afzal, I think that the simOut from the simulation being called with sim is the argument sent into the PostSimFcn. Does the ...

How to make variables assigned to SimulationInput object accessible to a PostSimFunction when using parsim

Hi Afzal, I think that the simOut from the simulation being called with sim is the argument sent into the PostSimFcn. Does the ...

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