From Friday, April 19th (11:00 PM CDT) through Saturday, April 20th (2:00 PM CDT), 2024, ni.com will undergo system upgrades that may result in temporary service interruption.
We appreciate your patience as we improve our online experience.
From Friday, April 19th (11:00 PM CDT) through Saturday, April 20th (2:00 PM CDT), 2024, ni.com will undergo system upgrades that may result in temporary service interruption.
We appreciate your patience as we improve our online experience.
03-14-2017 09:40 AM
I am trying to filter and smooth the peak DC level of 100kHz sampled data. I can't seem to find a suitable filter that filters and smooths the data without rounding off the leading edge of the signal and/or creating new artifacts like undershoot, overshoot, extended rise time, etc. I have attached a VI with sample data. I have included some of the more promising filters I have tried. In the end I am looking for as flat of a DC level as I can achieve with minimal rise time at the 100ms mark without adding additional artifacts.
03-14-2017 09:58 AM - edited 03-14-2017 10:03 AM
03-14-2017 10:42 AM
Sorry forgot about that one. Here are both files...
03-14-2017 10:55 AM
Hi Aaron,
you should use the original and the Median-Savitzky-Golay-w-Butterworth:
Use the original filter for the parts of your signal with big changes and the Median for parts with low changes.
Then again: keep in mind the comparison of the filtered result with your original data - it has be senseful in the end…
03-14-2017 11:25 AM
Yea I liked that one as well however I am not thrilled with the ~75ms hit I get on the rise time. If I could figure out a way to reliability grab the unfiltered data at the beginning power on rise and then just apply the filter to the data after that would probably work.
03-15-2017 02:11 AM