gear vibration signal TSA

[linchen]

Hello 

I have project to time sychronous average of gearbox signal, the signal from accelerometer is segmented every certain shaft rotation, the rotation of shaft is measured using  tachometer,  "could please provide some hints on how to apply this in labview?"(Pulses Per Rotation:8)

[GerdW · Accepted solution]

Hi linchen,

some hints on how to apply this in labview?

- you need to create subsets of your sampled data, each subset related to one rotation

- use your tachometer pulses to find the start of each subset

- when the rotation speed changes (a lot) you maybe need to resample your data to get the same amount of samples per revolution

I prefer to sample data based on crank angle using a an encoder with 360 ppr (or more): it gets very easy to sample data for each revolution when you use that encoder to supply an external sample clock…

[linchen]

Hi

Thanks  a lot for your help first,actually I have done this in MATLAB ,but I am not familiar with LABVIEW so I have no idea which icon(advanced signal processing toolkit) should I use?

can you provide me some examples?if you need my signal data ,I can upload later.

(The file is the result I did in MATLAB)

[GerdW]

Hi linchen,

as I don't know that advanced signal processing toolkit so much I would use plain array (and/or waveform) functions…

[linchen]

Hi,GerdW

Thanks a lot.It's ok,since I am not familiar with that either,anything can make the same result is acceptable.Maybe you will need my data,so I upload my data below.

[GerdW]

Hi linchen,

since I am not familiar with that either

What about learning LabVIEW? There are resources listed for beginners in the header of the LabVIEW board!

When you want someone else do your work (or homework) you should post over here…