Share with us how are you using the powerrrr of the force
Moderator: Alain
by blackbird_dream » Fri Oct 12, 2007 3:19 pm
Here is a quick shot taken with my cellular phone of our realistic driving simulator of Fork Lift Truck.
Realistic in the sense that the tire physics is based on Pacejka approach. All input data (tire and mass properties of the chassis, cab and swing axles (+stiffness) have been characterized in the lab). The whole model was validated with experimental tests with a real FLT.
Dual retro projection on front and back windows.
too bad we cannot hear the sound too.
vid here :
http://membres.lycos.fr/plsyndic/NGD/MOV00292.3GP
Thank you so much Julio
A second shot here : MOV00291.3GP
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blackbird_dream
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by Julio Jerez » Sun Oct 14, 2007 10:21 am
I am not familiar with that video format
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Julio Jerez
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by Thomas » Sun Oct 14, 2007 11:28 am
VLC can play it. ->
http://www.videolan.org/vlc/
the simulator looks really interesting!
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by Julio Jerez » Sun Oct 14, 2007 8:57 pm
Oh I see.
I chang teh link to this
http://membres.lycos.fr/plsyndic/NGD/MOV00291.3GP
to watch the second video.
It is difficult to realize what is going on,
I can see true the tiny window that there is a simulation happening, but I see a real person going in an out of a cabin, is this virtual reality simulation?
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Julio Jerez
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by Julio Jerez » Tue Oct 16, 2007 10:36 am
The link takes me to a site showing the name of the file, but not way to click for veiw or download.
Then after 10 to 20 secunds it takes me to another site and not way to see the video. How can I watch it.
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by Julio Jerez » Tue Oct 16, 2007 11:48 pm
Ha this is what I am talking about.
I am listing some of the videos so that other aptretice can apreciate the work.
This is the vehicle with the standard version of Newton 1.53
http://membres.lycos.fr/plsyndic/NGD/standard_build.avi
Aprentices can see they joints have some gain when lifting a heavy weight.
But with some adjusment to handle more stiff systems of equations this is the outcome.
http://membres.lycos.fr/plsyndic/NGD/special_build.avi
Here is the final work.
http://membres.lycos.fr/plsyndic/NGD/simuFLT.wmv
I'd like to say that this is not a toy, Blackbird_dream had done lots of reserach for this project and physics simulation is not the objective of the project.
Newton is just just one of the tools and I am very happy he selected it for his reserach.
I have a question, this is a expensive rig you have there, are you funding this project on your own?
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Julio Jerez
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by blackbird_dream » Wed Oct 17, 2007 4:16 am
You're right.
I work in the French Occupational Health and Safety Institute.
this simulator is one of the outcomes of our research project. My staff's committed it self in this research project for years now. The Objective was to improve stability of FLT. We developped a vehicle model in collaboration with truck manufacturers and 3 tire manufacturer design depts. In paralell we did series of experimental tip-over tests with real trucks.
The vehicle model is currently in the process of reviewing for publication in a scientific journal.
My idea was to implement the model in a "cheap" driving sim. Cheap because I had no real fundings for that. I retrieved an old truck cab. all the interface was made from low-cost game controllers. I just ask my lab designer to adapt the controllers to real wheel, pedals and manual controls. I used 4 beamers (2 of them are very old polaroid proj. I've searched through all the shelves and cupboards in my institute) and 2 pc through a network protocol. 1st hosts newton and 3D program. it runs the calculation realtime and displays front and rear view. it sends cam's and object's coordinates to the second which just updates the scene (side views).
Like you, I am also happy that your engine made this possible. I don't want to make negative advertising towards other engines but I tried ODE before and I faced instability problems due to the force transmission through the rear swing-axle and I had to give up.
Thanks again for all your work and your feedbacks. Thanks also to K00M for all his help. Without you 2, this would not have been possible.
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by Stucuk » Wed Oct 17, 2007 10:55 pm
Hmm GLScene.. are you using Delphi?
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by blackbird_dream » Thu Oct 18, 2007 2:08 am
yes, but not Oxnewton, despite it is a good component.
the reason is I wished to know how Newton works so I needed to implement it myself in the code.
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