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The processing of signals for the purpose of extracting a parameter or property embedded in a signal. Signal goes in and far fewer numbers come out.

0 votes
1 answer
114 views

Does tsa function in matlab assume constant rpm in the same rotation?

I just ran the example code, stepped into the tsa function, and saw the line 139: By looking at the code in the red box, it seems that MATLAB assumes constant rpm in the same rotation and evenly divi …
John's user avatar
  • 143
0 votes

Order analysis on sample vibration data to detect unbalance in python

I think you are doing basically right, you can selectively add two more steps: (1) Check max order for a new sampling rate in order domain, make sure you avoid aliasing. (2) Add some flexibility to up …
John's user avatar
  • 143
2 votes
3 answers
2k views

What is the relationship among digital filter cutoff frequency, signal frequency and filter ...

I have some general observations but I am asking if anyone can summarize more conclusively: (1) Filter settles slower if the ratio between signal frequency and filter cutoff frequency is smaller; (2) …
John's user avatar
  • 143
1 vote
1 answer
546 views

Are there any order analysis functions in Python?

I would like to perform the following order related tasks in Python: Convert tachometer pulse signal to RPM signal (tachorpm) Convert RPM signal to even-angle signal (orderwaveform) Time synchronous …
John's user avatar
  • 143