smoothen out noisy acceleration curve
smoothen out noisy acceleration curve
(OP)
I have a very noicy rotational acceleration curve from an impact to a dummy head. The impact has a duration of ~10ms and I wish to smooth it out without compromising the data. What type of filter is suitable for this?
I have been using a "sliding average" and butterworth filter but not sure which, if any, is good?
In the picture I have applied a sliding average that calculates the average of 20 points. The blue line has been filtered again with sliding average of 20 points.
I have been using a "sliding average" and butterworth filter but not sure which, if any, is good?
In the picture I have applied a sliding average that calculates the average of 20 points. The blue line has been filtered again with sliding average of 20 points.





RE: smoothen out noisy acceleration curve
However for crash data I think you'll find the regs specify what sort of filtering to use.
Cheers
Greg Locock
SIG:Please see FAQ731-376: Eng-Tips.com Forum Policies for tips on how to make the best use of Eng-Tips.
RE: smoothen out noisy acceleration curve
ht
RE: smoothen out noisy acceleration curve
Given that he has an S/N ratio of 0 dB I think I'd class that as high noise levels.
Cheers
Greg Locock
SIG:Please see FAQ731-376: Eng-Tips.com Forum Policies for tips on how to make the best use of Eng-Tips.