Hi Wallace,
What you have here is not a charting problem, but a signal processing
problem.
I've not done a lot of work in the signal processing field, but I would
suggest you do some research into Kalman filters - these may be what you
are looking for.
I would feed the raw data through a
After much searching, I cannot find 3rd part components to use. Am I search
for the wrong thing ?
This is version 2 of my dyno. The old version was a bought package that used a
Freq to voltage converter and then an A to D converter for the input to the PC
but he resolution was very poor and I
Wikipedia has a page on smoothing algorithms
https://en.wikipedia.org/wiki/Smoothing
Picking one at random from that list, I find a nice Delphi component
https://www.dewresearch.com/Help/Delphi/DSPMaster/AdaptiveFiltering_TKalmanFilter.html
Good luck!
Jay
> On 10/05/2021, at 10:03 AM,
: Re: [DUG] Chart Smoothing
I'd get a better sensor ?
I reading speed to 4 decimal places with an encoder and ATMEGA. The data is
very accurate. The problem is that sampling at 30 hz means the rate of change
of speed between samples is quite small, ie the noisy signal. I can improve
I'd get a better sensor ?
I reading speed to 4 decimal places with an encoder and ATMEGA. The data is
very accurate. The problem is that sampling at 30 hz means the rate of change
of speed between samples is quite small, ie the noisy signal. I can improve
the acceleration curve by taking fewer
Or a simple rolling average.
--
Jay Daley
> On 9/05/2021, at 1:56 PM, Todd Martin wrote:
>
> Maybe adapt a median filter to Delphi.
> http://rosettacode.org/wiki/Median_filter
>
> On Sun, May 9, 2021 at 1:24 PM Marshland Engineering
> wrote:
> I'm reading a noisy signal and need to
From: delphi-boun...@listserver.123.net.nz
On Behalf Of Todd Martin
Sent: Sunday, 9 May 2021 1:56 PM
To: Marshland Engineering ; NZ Borland Developers
Group - Delphi List
Subject: Re: [DUG] Chart Smoothing
Maybe adapt a median filter to Delphi. http://rosettacode.org/wiki/Median_filter
On Sun,
Maybe adapt a median filter to Delphi.
http://rosettacode.org/wiki/Median_filter
On Sun, May 9, 2021 at 1:24 PM Marshland Engineering <
marshl...@marshland.co.nz> wrote:
> I'm reading a noisy signal and need to filter the data. I've tried many
> home
> grown techniques but none are any good
I'm reading a noisy signal and need to filter the data. I've tried many home
grown techniques but none are any good enough.
Here is a sample of the data. I'm working on acceleration which is the rate of
change of speed. The change of speed between samples (30hz) is quite small so
the result is
