Re: [Speed-dreams-devel] about mu slip curve

[Ye Xu <xy0...@gm...>]

Thanks Kristof, that is true, I will go over source code to find out why
some time with ABS it needs longer time for a complete stop.

best regards,
Ye


On Thu, Apr 25, 2013 at 4:37 AM, Kristóf Kály-Kullai <ka...@gm...>wrote:

> Hello,
>
> as the physicist here I can answer some of your questions. Well, slip
> - mu function is implemented, it is in
>
> http://sourceforge.net/apps/trac/speed-dreams/browser/trunk/src/modules/simu/simuv4/wheel.cpp#L244
> see the lines above how the variables are calculated. Load sensitivity
> is also implemented, right after this line.
>
> > P.S. I have another quick question, I noticed different road
> > conditions and weather
> > conditions would have different breaking effects and stop distances. How
> > did you implement this feature without the road surface frictions?
>
> In the same file, in L249, when the force is calculated, mu is
> multiplied by a surface friction factor, which depends on the type of
> surface, and is decreased when raining.
>
> As for the ABS, the one implemented in human.cpp models a skilled
> driver, that is it acts on the brake pedal to avoid locking. Whereas
> real ABS can act on a single wheel as well. Wolf-Dieter started to
> implement such a single-wheel braking, the interface is already
> present (see brake.cpp L71-L74), not sure how far he reached to useit
> in his Simplix robot. So if you want to play with different ABS
> implementations, you can use this interface, too.
>
> Cheers,
> Kristof
>
>
> ------------------------------------------------------------------------------
> Try New Relic Now & We'll Send You this Cool Shirt
> New Relic is the only SaaS-based application performance monitoring service
> that delivers powerful full stack analytics. Optimize and monitor your
> browser, app, & servers with just a few lines of code. Try New Relic
> and get this awesome Nerd Life shirt! http://p.sf.net/sfu/newrelic_d2d_apr
> _______________________________________________
> Speed-dreams-devel mailing list
> Spe...@li...
> https://lists.sourceforge.net/lists/listinfo/speed-dreams-devel
>



-- 
Best Regards,

Ares Hsu