WB & logging

[rr]

The filter equation is:

NewFiltValue = OldVal + Cf * (NewVal - OldVal)

For additional information see:

  http://www.diy-efi.org/gmecm/papers/747lag.txt

BobR.


On Mon, 27 Aug 2001 22:21:19 -0400
 Barry Tisdale <btisdale at cybersol.com> wrote:
> Thanks, Bob -
> 
> I'll have to put a 'scope on the ADC input and check the
> nature of the
> noise.  I'd like to attempt to minimize it first - one of
> my cylinders has
> some shot rings, compression down to 70# from 170#
> normally - wonder if
> this might have something to do w/ it...
> 
> I'm using my own software to read the ALDL as well as an
> 8 channel ADC into
> which goes (so far), the WB, fuel pressure &
> accelerometer.
> 
> Could you give me an example of a filter in a higher
> level language?  Not
> familiar w/ H11 opcodes, just Z80 (remember them?) and
> x86 stuff.
> 
> Barry
> 
> At 08:27 PM 8/27/01 -0400, you wrote:
> >
> >Both hardware filtering and software filtering can be
> done. With the
> >DIY-WB I use I placed a .1uf cap at the input to the
> ADC. This
> >coupled with the 1K output impedence creates a low pass
> filter.
> 
> 
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