Date: Thu, 07 Sep 2000 21:00:12 +0200 From: Eric Espie To: Rars mailing-listSubject: Re: Question about friction model in RARS Jussi Pajala wrote: > > Thanks Eric! > > The book sounds quite interesting. I quess you have used this book > quite a lot when developing/planning Torcs... In fact I bought it this year, the dynamic part of TORCS was already written. > > What are the other sources you have used, or was this book enough? - Race Car Vehicle Dynamics, W.F Milliken & D.L Milliken ISBN: 1-56091-526-9 Editor: SAE (1995) Comments: Very race-oriented. Uses non-metric units. - Tires, Suspension and Handling, J.C Dixon ISBN: 0-340-67796-1 or 1-56091-831-4 Editor: Arnold or SAE (1996) comments: Very "mathematical" it demonstrate a lot (in fact too much for me but should interrest peoples like Remi ;-) . Uses metric units. - Fondamentals of Vehicle Dynamics, T.D Gillespie ISBN: 1-56091-199-9 Editor: SAE (1992) Comments: Almost the same as G.Genta (Motor Vehicle Dynamics) but I prefer Genta's one. Uses non-metric units. - Inside Racing Technology, P. Haney, J. Braun ISBN: 0-9646414-0-2 Editor: TV Motorsports (1997) Comments: popularization, not too mathematical but interesting. Uses non-metric units. - Going Faster, The Skip Barber Racing School, C. Lopez ISBN: 0-8376-0227-0 Editor: Robert Bentley (1997) Comments: Very good on the driving techniques, I did not succeed in traducing it in my robots... Uses non-metric units. - Data Power, Using racecar data acquisistion, B. Fey ISBN: 1-88109-601-7 Editor: Towery (1993) Comments: all to understand the telemetry stuff. Uses non-metric units. - SAE papers on Simulation and Motorsports. Comments: Research papers, a lot of sujets covered, but not all usefull. very expensive. Generaly uses non-metric units. If you want to buy only one book I recommend the Genta's one: - Motor vehicle dynamics: modeling and simulation, G.Genta ISBN: 9810229119 Editor: World Scientific (1997) No one book I bought have algorithms, only math formulas... But, in order to program a simulator you will have to deal with the Ordinary Differential Equations (ODE for small). my sources were: http://www.magic-software.com but it seems that David Eberly is writing a book. I saw that source code was available too. > > The reason I keep asking the questions is that I've been interested > of developing a car simulator my self, but there are some dynamics > and other stuff I've not been able to figure out. Good luck ;-) > > --Jussi > > > > >The chapters are: > > > >1 - Short historycal notes on motor vehicles > >2 - Forces acting between road and wheel > >3 - Road vehicle aerodynamics > >4 - Longitudinal dynamics > >5 - Handling of a rigid vehicle > >6 - Motor vehicle on elastic suspensions > >7 - Road accidents > > > >There are a lots of formulas, but no algorithm. > > > >Eric. > >-- > > BTW, if someone has info on the differentials, I am interrested as they are poorly simulated in TORCS. Eric. -- =+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+= TORCS The Open Racing Car Simulator http://torcs.org =+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=