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Timeline for Order analysis, need help

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Feb 24, 2016 at 12:45 comment added Dan Kr Thank you @DaveTweed . Do I need to make FFT over the samples i acquire ? And about the tacho signal, do i need to interpolate the values between each pulse so they equal the vibration values which are sampled 4x? Also what do you mean by simple math on the sine wave can you give me some papers or example I can research. Thank you in advance!
Feb 23, 2016 at 12:32 comment added Dave Tweed I don't have time to write a full answer right now. In my previous comment, I was alluding to the fact that if you sample the waveform synchronously with the tachometer signal, deriving amplitude and phase information is relatively straightforward, at least for a simple sine wave. The Wikipedia article is talking about the math required when the sampling is asynchronous. It is also more general, capable of dealing with waveforms more complex than a sine wave.
Feb 22, 2016 at 21:18 answer added seshu timeline score: 1
Feb 22, 2016 at 18:24 comment added Andy aka Is it possible to subtract the filtered signal from your original signal and get the imbalance signal remaining?
Feb 22, 2016 at 16:47 comment added Dan Kr Hello @DaveTweed thank you for your reseponse. Order analysis is just like frequency analysis but done in the angular domain. Instead of using time, the revolotuions are used as reference. But Im still confused whether or not I should perform fourier analysis over the simple sine wave so I can get amplitude for that particular frequency en.wikipedia.org/wiki/Order_tracking_(signal_processing) Heres a reference, maybe you will understand it better than I did.
Feb 22, 2016 at 13:40 comment added Dave Tweed You need to determine the amplitude of the sinewave, and also its phase relative to the tachometer reference signal. The easiest way to do this is to sample it at 4x the tachometer frequency and do some simple math on the numbers. I have no idea what you mean by "order analysis" or "order tracking".
Feb 22, 2016 at 11:32 review First posts
Feb 22, 2016 at 13:08
Feb 22, 2016 at 11:29 history asked Dan Kr CC BY-SA 3.0