4 ms·

looked at using airsim a few months ago to replace a product we'd been using for some time, problem was the actual vehicle dynamics simulation capabilities were

looked at using airsim a few months ago to replace a product we'd been using for some time, problem was the actual vehicle dynamics simulation capabilities were subpar

grenoire 7y ago
Did not do a code review but I would not be surprised if they were using Unreal's default vehicle simulation; which, as you noted, is indeed sub-par. It's honestly a very challenging task to get vehicle physics to accurately replicate real cars, and the systems which are out there (commonly used by manufacturers to make advertisement renderings) are proprietary and expensive.
- draugadrotten 7y ago
  If using Unreal, the assetto corsa competizione video game is pretty good for simulations and it offers a commercial license. https://www.assettocorsa.net/assetto-corsa-pro/ https://www.assettocorsa.net/assetto-corsa-pro/ As does rFactor2 but it may not be so easy to use with unreal. http://www.vesaro.com/store/pc/viewPrd.asp?idproduct=130 http://www.vesaro.com/store/pc/viewPrd.asp?idproduct=130
- Stevvo 7y ago
  It the demo video it popped up"Advanced Physx car model". Physx is designed for a good enough approximation in games, not an accute simulation.
- deleted 7y ago
  [deleted]
- mey 7y ago
  There is a physical car designed to be repainted (like a motion capture actor) in CGI. It solves physics by using actual physics. http://www.themill.com/portfolio/3002/the-blackbird%C2%AE http://www.themill.com/portfolio/3002/the-blackbird%C2%AE
  - grenoire 7y ago
    In that case you are limited to real terrain only, your replication goes as far as your recording.
akoumis 7y ago
Airsim also has poor facilities for stepped simulation needed for many RL algorithms (e.g. insert control, advance simulator by 30ms, observe state, repeat). It looks like this is still being worked on: https://github.com/microsoft/AirSim/issues/600 https://github.com/microsoft/AirSim/issues/600
- lutorm 7y ago
  Weird, I'm surprised that isn't the default mode of operations for something that's designed to plug in your own control system.

looked at using airsim a few months ago to replace a product we'd been using for some time, problem was the actual vehicle dynamics simulation capabilities were subpar

grenoire 7y ago

Did not do a code review but I would not be surprised if they were using Unreal's default vehicle simulation; which, as you noted, is indeed sub-par. It's honestly a very challenging task to get vehicle physics to accurately replicate real cars, and the systems which are out there (commonly used by manufacturers to make advertisement renderings) are proprietary and expensive.

draugadrotten 7y ago
If using Unreal, the assetto corsa competizione video game is pretty good for simulations and it offers a commercial license. https://www.assettocorsa.net/assetto-corsa-pro/ https://www.assettocorsa.net/assetto-corsa-pro/ As does rFactor2 but it may not be so easy to use with unreal. http://www.vesaro.com/store/pc/viewPrd.asp?idproduct=130 http://www.vesaro.com/store/pc/viewPrd.asp?idproduct=130
Stevvo 7y ago
It the demo video it popped up"Advanced Physx car model". Physx is designed for a good enough approximation in games, not an accute simulation.
deleted 7y ago
[deleted]
mey 7y ago
There is a physical car designed to be repainted (like a motion capture actor) in CGI. It solves physics by using actual physics. http://www.themill.com/portfolio/3002/the-blackbird%C2%AE http://www.themill.com/portfolio/3002/the-blackbird%C2%AE
- grenoire 7y ago
  In that case you are limited to real terrain only, your replication goes as far as your recording.

akoumis 7y ago

Airsim also has poor facilities for stepped simulation needed for many RL algorithms (e.g. insert control, advance simulator by 30ms, observe state, repeat). It looks like this is still being worked on: https://github.com/microsoft/AirSim/issues/600 https://github.com/microsoft/AirSim/issues/600

lutorm 7y ago
Weird, I'm surprised that isn't the default mode of operations for something that's designed to plug in your own control system.