forced convection boiling experiment at rolling conditions.. test section is on platform which is rolling and we get the angle data through Inclinometer sensor which is read in LABView so I am getting angle data at every second using below mentioned equations I get these plots for angular velocity and angular acceleration. The problem is that my supervisor is asking me to make piece-wise function from experimental data and use Fourier transformation to get results as from sine equations using my experimental data and aforementioned equations. I need help and some expert opinion on urgent basis. Please have a look at this. Thanks
Dear Muhammad,
welcome,
You want to express the experimental data as apiece wise function of time and then transform these functions in the frequency domain using Fourier analysis.
Piece wise means that you want to divide your curve into pieces covering certain ranges of time.
Well! i would propose at first if your experimental results are periodic or not. If they are periodic what is the value of the periodic time.
If they are periodic you can take only one period of time and making for them fft analysis. If the function is periodic means that the frequency components will be a fundamental and harmonics.
I think in order to demonstrate the periodicity you have to have results a relatively long times containing many cycles.
When you show extended results in time i can tell you how to divide your curve into pieces.
Best wishes
Hi Muhammad Ahsan Nawaz,
If the absolute accuracy of the measurements is known, choose the number of Fourier expansion terms to correspond to this accuracy (say in the sense of mean squares).
Dear Muhammad,
welcome,
You want to express the experimental data as apiece wise function of time and then transform these functions in the frequency domain using Fourier analysis.
Piece wise means that you want to divide your curve into pieces covering certain ranges of time.
Well! i would propose at first if your experimental results are periodic or not. If they are periodic what is the value of the periodic time.
If they are periodic you can take only one period of time and making for them fft analysis. If the function is periodic means that the frequency components will be a fundamental and harmonics.
I think in order to demonstrate the periodicity you have to have results a relatively long times containing many cycles.
When you show extended results in time i can tell you how to divide your curve into pieces.
Best wishes
Use The PROPERTY THAT CONVOLUTION IN THE TIME DOMAIN
IS
MULTIPLY
IN THE
FREQUENCY
DOMAIN .
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