Cycling noise filtering

[paubin]

Hi,

I would like help trying to filter a signal in my data.

Data studied is 'ecart real', if you zoom on a small area (using Diadem or other), you can see a cyclic signal of about 75 pulses period.

I would like to filter that big oscillation and keep the small variation.

thank you!

Patrick

[santo_13]

You could pass this data through a software-based bandstop filter to remove the 75Hz noise. In an ideal case, you have to figure out what causes this noise and remove it at the hardware level.

[paubin]

Thank you.

Look like a relative displacement from the mechanical assembly. (This signal is a displacement)

Further investigation is necessary.

Could you refer some software? Hope to solve this displacement from the source too.

Thank you.