create a spectrum of the order from scratch (i.e. get a fft-based on the position of the same time deductions in the sample data)

Hello people,

THAT THE QUESTION PERTAINS TO:

I play on 2 parameters of a system based on the sampling time: Rotary position and vibration (accelerometer g increments).  I want to take a fft based on the post to create a spectrum of the amplitude-phase speed order in / s.  To do this, perform the following:

1 integrate (and scale) g vibration signal in the / s (SVT Integration.vi)

2 signal sampled vibration resample the same time at an angle similarly charged signal (ma-resample unevenly sampled input (linear interpolation) .vi)

THE QUESTION:

Order in which operations should be carried out, integrate then resample or vice versa?  I didn't order would be important, but using the same set of data, the results are radically different.

OR ORDER ANALYSIS 2.0 TOOLSET:

I have the NO order Analysis Toolset 2.0, but I could not find a way to get the speed profile generation live to work with signals of position encoder DAQmx (via pxi-6602) quadrature.  In addition, it seems that I have to specify all the commands I'm interested to watch, which I don't really know at this point (I want to see all available commands) so I decided to do my own fft based on the post to get a spectrum of the order.

Any help is greatly appreciated.

Chris

The order is to integrate the time domain of first - creating a speed channel.  You now have a new channel of data.  In general I would put this in the same table of waveform with waves of acceleration time.

Then re - sample your acceleration and/or your speed signals, and then you can calculate the spectrum of the order.

Tags: NI Software

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