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- Newsgroups: comp.robotics
- Path: sparky!uunet!stanford.edu!bcm!aio!drseus.jsc.nasa.gov!graves
- From: graves@drseus.jsc.nasa.gov (Philip Graves)
- Subject: Re: Modeling Slip, Mobile Robotics, Kinematics, Simulation
- Message-ID: <1992Nov17.150430.27431@aio.jsc.nasa.gov>
- Sender: news@aio.jsc.nasa.gov (USENET News System)
- Organization: Lockheed Engineering & Sciences Company
- References: <1e8eknINNdn6@clover.csv.warwick.ac.uk> <1992Nov17.035803.4304@netcom.com>
- Date: Tue, 17 Nov 1992 15:04:30 GMT
- Lines: 28
-
- In article <1992Nov17.035803.4304@netcom.com> nagle@netcom.com (John Nagle) writes:
- >
- > The animation community leads in this area. See Zeltzer's paper in
-
- Animation community? Are you serious?
-
- >
- > Vehicle dynamics is rather well understood. The basic work
- >was done about two decades ago at Cornell Aeronautical Laboratory
- >(now CALSPAN). There's a great story about how the person who did
- >that work, annoyed by people questioning whether he could really
- >predict vehicle dynamics in extreme situations, teamed up with an
- >auto thrill show to design a never-before-done stunt, a 360 degree
- >roll in the air. Worked the first time. Appeared in a James Bond
- >movie.
- >
-
- This is true, the dynamics of vehicle is understood, under optimal
- conditions where all parameters are known. But not all the parameters
- are known or can be predicted. Friction can vary greatly due
- to roadway/surface conditions. In most cases the best that can be
- done is to "bracket" the response of a vehicle based on the highest
- and lowest frictions that are expected.
-
- --
- --------------------------------------------------------------
- Philip Lee Graves, graves@drseus.jsc.nasa.gov
- --------------------------------------------------------------
-