Simulating Multiple Vehicles

[Faisal Hafizh]

Greetings,

I'm trying to simulate AI controlled vehicles that roam around. I found that the limit of vehicles running at the same time with acceptable performance is about 2 to 5 vehicles, depending on the suspension model used. For instance, vehicle with double wishbone model is significantly more demanding compared to a leafspring axle one. 

Ideally, I would like to have at least 10 of them at the same time. What's the best approach in doing so? Is it even possible? 

I tested this with TMeasy tire in a NSC collision system and 0.002 step size. I found that step size to be the sweet spot for my case. Anything higher will make the suspension joints unstable. 

Another approach I could probably do is to use a simple body and setting its position and rotation manually, but if possible I would like to use actual vehicle configuration, as in the wheels support the chassis and rotate accordingly along the terrain, not just floating.

[Dan Negrut]

Faisal - One possible path forward is to use Synchrono.

Here’s a paper that describes it: https://par.nsf.gov/servlets/purl/10276897.

Dan

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Bernard A. and Frances M. Weideman Professor

NVIDIA CUDA Fellow

Department of Mechanical Engineering

Department of Computer Science

University of Wisconsin - Madison

4150ME, 1513 University Avenue

Madison, WI 53706-1572

608 772 0914

http://sbel.wisc.edu/

http://projectchrono.org/

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[Faisal Hafizh]

Hi Dan,

Thanks for the reply, I was not aware of the Synchrono module. I will look further into it. It might be what I'm looking for. 

Although the project failed to build through Visual Studio. The errors are linked with the flatbuffers submodule, maybe I did not initialize it properly. The documentation did not elaborate on the details. Any suggestions?

[Bocheng Zou]

Hi Faisal,

Could you please post the detailed error message you see during the compilation process? It will help us to identify the potential issues. 

Best,

Bocheng Zou

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