IN NEED OF MATLAB CODE FOR ENVELOPE ANALYSIS.

Good morning everyone, i need a Matlab code on Envelope Analysis to determine the defect frequency of Faulty bearing having up to 256000 one column data in text format. I will appreciate any form of assistant/contribution on this. Regards,

[sunil kalyankar]

hi every one , i need a matlab cod on envelope anlysis to determine the defect frequency of faulty bearing having vibration data in time domain in text format format please assist me . thanks & warm regards

Answer 1

[Luuk van Oosten]

Maybe have a look here, could be a good place to start. Or over here

[Oyetunde Oyeniyi]

@Luuk van Oosten, i appreciate your prompt response, am still having some issues as regards to the frequency spectrum of the envelope signal because i can't identify the defect frequency from it. attached is my Matlab Code (FFT,HILERT,LPF) and the data from the faulty rolling element bearing. I will appreciate your kind perusal and response.

[Image Analyst]

Did you try spectrogram() or pwelch()?

[Luuk van Oosten]

All right, I had a look at your code and the data and read a few articles about what you are trying to accomplish (man, there is a lot of literature out there!)... and found that there is a guy who wrote an extensive piece of code & examples on his blog.

'Cause if I understand correctly you want to find the envelope of your signal and from that you want to extract the frequency. And than this frequency tells you something about the defect in your bearing?

[Aditya Baru]

Adding these links for future reference...here are some examples on bearing signal analysis: https://www.mathworks.com/help/signal/examples/vibration-analysis-of-rotating-machinery.html https://www.mathworks.com/help/predmaint/examples/Rolling-Element-Bearing-Fault-Diagnosis.html