Resampling a signal with respect to variable rotational speed (Angular Domain)

Hello everyone.

I want to resample my vibration signal which has been sampled with constant rate (50 kHz) with respect to the variable shaft speed. I have the tachometer signal as well. The Order Tracking Toolbox of MATLAB only gives me the spectra but I need the resampled signal itself (signal in angular domain). Has anyone implemented code for this?

Thank you in advance.

Answer 1

[Image Analyst]

What is the "Order Tracking Toolbox"? It doesn't seem to come up in a list of Mathworks products.

Did you try interp1 or spline?

See attached demos.

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Answer 2

[atabak mostafavi]

Hi @Image Analyst, Thank you for your answer,

see this linke for MATLAB Order Analysis. you can also select a specific order to be converted back to waveform but it is very computatinal costly and almost imposible for all the orders existing in one siganl. I have used spline it works but I need to down sample the signal due to some technichal issues so it is not quite what I want.