DIY Traction Control

[Axel Rietschin]

I'll have a look, thank you very much for the pointer.
--Axel

----- Original Message -----
From: "Brian Dessent" <brian at dessent.net>
To: <diy_efi at diy-efi.org>
Sent: Thursday, March 14, 2002 21:53
Subject: Re: DIY Traction Control


>
> Axel Rietschin wrote:
>
> > PS: I'm looking for a device having four wheel speed inputs and one
output.
> > I'd like to be able to choose what I want as output, for example the avg
> > wheel speed, fastest wheel, slowest wheel, or the median speed, ignoring
the
> > fastest and slowest and averaging the remaining two. The idea is to do
4wd
> > traction control with a 2wd TC system, using the output of this device
as
> > "driven" wheel speed and a non-contact speed sensor (a Doppler effect
ground
> > speed radar) as "undriven" wheel speed.
> >
> > Any idea?
>
> National's LM2907 can do select-low, select-high, and select-average of
> two wheel speed inputs.  See page 16 of the datasheet for sample
> circuits.
>
> http://www.national.com/ds/LM/LM2907.pdf
>
> Brian
>
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