STFT in rotordynamics
STFT in rotordynamics
(OP)
Hello.
I've heard that STFT is a very useful tool to analyse the dynamics of a rotor. Is that true? If yes, can you recommend me some bibliography?
Thanks!
I've heard that STFT is a very useful tool to analyse the dynamics of a rotor. Is that true? If yes, can you recommend me some bibliography?
Thanks!





RE: STFT in rotordynamics
RE: STFT in rotordynamics
heitor - who did you hear it from? why not ask them? do they often lie to you?
Cheers
Greg Locock
RE: STFT in rotordynamics
STFT means short time fourier transform, and when I find something about using it on rotordynamics, I will post it here .
RE: STFT in rotordynamics
Has some material on STFT..I cant think of any application to RD.
RE: STFT in rotordynamics
Anyway, yes we use different resolutions for our FFTs, but frankly the use of very short frames of data is rarely used in the automotive world since we are often very interested in the exact frequencies, and our slew rates are not very high. If your slew rates are high enough that you need to use STFT then I suggest you probably need to think about a time domain analysis not an FFT. You should probably be thinking about using a gated sampling technique at the very least (the diesel guys use this to look at the combustion noise signature from each cylinder).
Incidentally anybody who hasn't read polikar's web page is in for a treat, it is the best discussion of ffts and wavelets I've seen.
Cheers
Greg Locock
RE: STFT in rotordynamics
RE: STFT in rotordynamics
RE: STFT in rotordynamics
Can you provide Polikar's web page address with its discussion of ffts and wavelets?
Tunalover
RE: STFT in rotordynamics
Cheers
Greg Locock