Jeff

University of Nebraska

Aktiv seit 2011

Followers: 0 Following: 0

Nachricht

Statistik

Abzeichen anzeigen

Feeds

Frage

Rayleigh's Identity and the Fourier coefficients
Attached is my m file that computes the Fourier coefficients for a function that is referred to as the "Friedlander waveform". ...

mehr als 7 Jahre vor | 0 Antworten | 0

0

Antworten

Frage

GIBBS overshoot behavior difference
There is plenty of literature indicating that the overshoot at a jump discontinuity from the GIBBS effect is 1.08949. However...

fast 8 Jahre vor | 1 Antwort | 0

1

Antwort

Frage

Saving workspace variables iteratively
I would like to iteratively save my workspace variables to disk upon completion of a FOR loop. For example, for the 1st iterati...

etwa 8 Jahre vor | 1 Antwort | 0

1

Antwort

Frage

Square wave function Mean Squared Error differing by a factor of 2?
Below are 2 scripts that compute Mean Squared Error, E, of a square wave with the jump discontinuities occurring @ -Tau/2 & +Tau...

etwa 8 Jahre vor | 1 Antwort | 0

1

Antwort

Frage

GIBBS effect at discontinuities for different functions
The Fourier series of waveforms with discontinuties experiences an overshoot near the discontinuity known as the "Gibbs phenomen...

etwa 8 Jahre vor | 0 Antworten | 0

0

Antworten

Frage

GIBBS phenomenon & sum of squared differences
I obtained the attached m-file from MATLAB Central that demonstrates GIBBS phenomenon. I modified the code to track the sum of ...

etwa 8 Jahre vor | 1 Antwort | 0

1

Antwort

Frage

symmetric vs asymmetric Fourier series
I have experimental data that in some respect can be modelled by an asymmetric triangle function (1-t) for 0<=t<=1. It is not q...

etwa 8 Jahre vor | 1 Antwort | 0

1

Antwort

Frage

Why are the results to the fit command getting cleared from the workspace?
I have attached 2 m-files. The 1st one calls on the 2nd one to generate a Fourier series curve fit. When I run it it terminate...

etwa 8 Jahre vor | 1 Antwort | 0

1

Antwort

Frage

My question is not visible on the Answer webpage
I posted a question 3 hours ago titled "GIBBS phenomenon & sum of squared differences". I went to check the Answer webpage to s...

etwa 8 Jahre vor | 1 Antwort | 0

1

Antwort

Beantwortet
Overshoot of Fourier series for y=1-t
I found an analytical solution to the Gibbs overshoot: https://statweb.stanford.edu/~candes/acm126a/Hw/hw2sol.pdf I also att...

etwa 8 Jahre vor | 0

| akzeptiert

Frage

Overshoot of Fourier series for y=1-t
I have recently examined the overshoot of a Fourier series representation of the function 1-t. Included in the PDF file is a pl...

etwa 8 Jahre vor | 1 Antwort | 0

1

Antwort

Beantwortet
Unimportable TAB delimited file
I found a computer with significantly more memory & was able to import the file. So solved.

etwa 8 Jahre vor | 0

| akzeptiert

Frage

Unimportable TAB delimited file
I have a TAB delimited file which fails to import every time I try. I am not sure if my failure is due to the size of the file ...

etwa 8 Jahre vor | 1 Antwort | 0

1

Antwort

Frage

Fourier series expansion using the Curve Fitting Tool
I have some very perplexing results I obtained using the Curve Fitting Tool which I am having difficulty interpreting and reconc...

etwa 8 Jahre vor | 1 Antwort | 0

1

Antwort

Frage

state-space eigenvector matrix normalization
I am in a bit of a quagmire & seeking suggestions? I have utilized the eig(A) command to find the eigenvalues & eigenvectors ...

mehr als 8 Jahre vor | 1 Antwort | 0

1

Antwort

Frage

Null space vs eigenvectors
Below is a code I ran to compare the null space & the eigenvectors of matrix A. Please correct me if I am wrong, but I thought ...

mehr als 8 Jahre vor | 1 Antwort | 0

1

Antwort

Beantwortet
fundamental eigensolution matrix determinant
Again, the issue resides with the normalization of V. Below is a code I devised to denormalize each of the eigenvectors in V. ...

mehr als 8 Jahre vor | 0

Frage

fundamental eigensolution matrix determinant
Assembling the eigensolutions of a system of differential equations into a matrix results in what some have coined as the "funda...

mehr als 8 Jahre vor | 3 Antworten | 0

3

Antworten

Beantwortet
reconciling zpk output?
I believe I found the source of the problem, but I do not know how to deal with it. It appears that the ZEROS of X0 & X1 are n...

mehr als 8 Jahre vor | 0

Frage

Discrepancy in transfer functions
I have included in the .zip file a .slx model & the input data & parameters in the .mat file. You will need to import the conte...

mehr als 8 Jahre vor | 0 Antworten | 0

0

Antworten

Beantwortet
Using the Ideal Translational Velocity Source
I believe I figured this out. I changed the input signal so that it is smooth at time = 0. If the initial velocity is somethin...

mehr als 8 Jahre vor | 1

| akzeptiert

Frage

Using the Ideal Translational Velocity Source
I have no problem prescribing an input force to a mass/spring system in SIMSCAPE. However, applying a prescribed displacement a...

mehr als 8 Jahre vor | 1 Antwort | 0

1

Antwort

Beantwortet
SIMULINK dynamic response versus root loci
I have since resolved this issue. It turned out that my feedback path was not correct. I have included the correct SIMSCAPE & ...

mehr als 8 Jahre vor | 0

| akzeptiert

Beantwortet
SIMULINK BODE plot yields no response
This was corrected by changing the SNAPSHOT time

mehr als 8 Jahre vor | 0

| akzeptiert

Frage

reconciling zpk output?
I have included a SIMSCAPE model of a 3 DOF system in the attached ZIP file along with the necessary input data. In the jpg sch...

mehr als 8 Jahre vor | 1 Antwort | 0

1

Antwort

Frage

Force Sensor port connections confusion
I have constructed 2 SIMSCAPE models of a 3 DOF system. One is with a force sensor connected in parallel with a 3 degree of fre...

mehr als 8 Jahre vor | 1 Antwort | 0

1

Antwort

Frage

SIMULINK BODE plot yields no response
Included in the ZIP file is a SIMULINK model of a 3 degree of freedom system along with the input data and appropriate gain valu...

mehr als 8 Jahre vor | 1 Antwort | 0

1

Antwort

Frage

Frequency response of 3 degree of freedom system
Included in the ZIP file is a SIMULINK model of a 3 degree of freedom system along with the input data and appropriate gain valu...

fast 9 Jahre vor | 0 Antworten | 0

0

Antworten

Frage

simulation time shortened with step size
I am reasonably new on SIMULINK and I am trying to configure the solver to have sufficient time resolution to analyze the high f...

fast 9 Jahre vor | 1 Antwort | 0

1

Antwort

Frage

SIMULINK dynamic response versus root loci
I am new to the SISO tool, but used it to compare, not design, the response of 2 systems I constructed in SIMULINK. I have incl...

fast 9 Jahre vor | 1 Antwort | 0

1

Antwort

Mehr laden