kungfucrazy wrote in message news:<5065000000080000006FAF0000-1068850981000@exchange.ni.com>...
> I can't seem to figure out how to continuiously integrate an
> accelerometer signal twice to view the displacement. Ive used all of
> the different integration VI's and i can't seem to get the result i
> need. i don't want to see a waveform, i just the value of the
> displacement. Any one help? been at this a long time now.
I have done something like this, but on chunks of data, and with only
one integration. The program acquires 1000 samples from the AD-card in
each program iteration and puts these into an array. It then
calculates the mean of the array and subtracts the mean from every
array location. After this the array is high pass filtered (signal
pr
osessing/butterwort filter)and then integratet (signal
prosessing/time domain/integral x(t)).
With this program I measure both a geophone(velocity transducer) and a
accelerometer. When I integrate the accelerometer this way, its time
series matches the volocity time series very vell.
Hope this helps
