photo

ben howey


Plymouth University

Active since 2015

Followers: 0   Following: 0

Message

Statistics

  • First Answer
  • Thankful Level 1

View badges

Feeds

View by

Question


neural network NARX time series
I have six columns of data (See attached spreadsheet). I am trying to predict chamber pressure from motion responses in six deg...

6 years ago | 1 answer | 0

1

answer

Question


ifft output is complex?
I have a time series (x). I have taken the fft of the time series (X). I want to shift the entire series, or in the future onl...

6 years ago | 2 answers | 0

2

answers

Answered
How to Solve a second order differential equation for variable eta in time domain- with a contained integral over another dummy variable (tau)-
Hi, I am trying to do the same thing. I have used a BEM code to calculate the IRF, inf added mass and frequency dependant exci...

6 years ago | 0

Question


When using symbolic solver I seem to get the strange answer.
eqn=A*Cd*sqrt((2*P)/r)==Q eqn = 2^(1/2)*A*Cd*(P/r)^(1/2) == Q >> solve(eqn,Cd) ans = (2^(1/2)*Q)/(2*A*(P/r)^(1/2)) ...

7 years ago | 1 answer | 0

1

answer

Question


solve not outputting an answer
I am trying to solve 6 non linear equation with 6 unknowns using the symbolic method. When I run the following script, it just ...

7 years ago | 1 answer | 0

1

answer

Question


Signal filtering to remove low frequency movement
I have the following signal - position of object against time. <</matlabcentral/answers/uploaded_files/36263/example.jpg>> ...

9 years ago | 1 answer | 0

1

answer

Question


Finding peaks only in signal
I want to find only the peaks in a signal that could have more than one frequency as shown in the picture <</matlabcentral/a...

9 years ago | 2 answers | 0

2

answers