Signal analysis
Signal analysis
(OP)
I'm using an PCB accelerometer with ICP (built in electronics) to measure vibrations.
I'm using a PC-based data-acquisition system make Iotech.
When displaying the measured amplitude spectrum, peaks at 5, 10, 15 Hz and so forth can be seen. When repeating the measurement, the peaks get less 'high' and eventually (after about 20 min.) the spectrum looks more or less reliable. How can this problem be solved? Can FFT or windowing be the problem?
Thanks in advance
Wim32
I'm using a PC-based data-acquisition system make Iotech.
When displaying the measured amplitude spectrum, peaks at 5, 10, 15 Hz and so forth can be seen. When repeating the measurement, the peaks get less 'high' and eventually (after about 20 min.) the spectrum looks more or less reliable. How can this problem be solved? Can FFT or windowing be the problem?
Thanks in advance
Wim32





RE: Signal analysis
Can you describe what you are trying to measure?
If you send me the data (preferably the time history, but the spectrum would be OK) for the two times you mention I'll have a look. Use csv or txt output. Send it to greglocock at yahoo.com.au
Cheers
Greg Locock
RE: Signal analysis
RE: Signal analysis