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=====Setting up the FFT analysis===== | =====Setting up the FFT analysis===== | ||
We can now setup the FFT to optimise the analysis. To access to the setup parameters, click on ''settings'' in the ''Show result'' window : | We can now setup the FFT to optimise the analysis. To access to the setup parameters, click on ''settings'' in the ''Show result'' window : | ||
[[Image:SettingFFT.png| | [[Image:SettingFFT.png|500px]]<br> | ||
Here, the maximum speed of the motor is 2000RPM. That make the first order at 2000/60 = 33Hz and the tenth order at 330Hz. In order to optimize the computation, we will then limit the FFT bandwidth to 5kHz, the overlap to 67% and the number of lines to 1601 to have a correct precision. | Here, the maximum speed of the motor is 2000RPM. That make the first order at 2000/60 = 33Hz and the tenth order at 330Hz. In order to optimize the computation, we will then limit the FFT bandwidth to 5kHz, the overlap to 67% and the number of lines to 1601 to have a correct precision. |