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Active suspension in BeamNG

Discussion in 'General Discussion' started by Rainvest, Mar 4, 2017.

  1. Rainvest

    Rainvest
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    Watching a couple of videos, I noticed that Bose had made an electromagnetic suspension that would dynamically adjust to every bump in the road and pitching and body roll would be nearly eliminated. Is this possible to make with the current suspensions we have? And if so, what would I need to make one? I'd say most likely lua.

    It would be very interesting to see what it would look like in the game.

     
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  2. LucasBE

    LucasBE
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    It would be a nice addition :D
     
  3. Rainvest

    Rainvest
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    And I also found a newer, better video.

     
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  4. ast5515

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    Waaaaay too much work. If they are going to add it, it's not gonna happen soon.
     
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  5. Rainvest

    Rainvest
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    How do you know it's too much work?
     
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  6. Stratosphere

    Stratosphere
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    Wow this suspension is pretty incredible. I know they said that it was to expensive to fit on any mainstream car, but do you know any cars (production or not) that it is currently fitted to?
     
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  7. Bernd

    Bernd
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    This gave me the idea to put the automatic corner roll Mercedes has put into the S-Class a while ago into beam. Feels pretty cool from interior view, can't really state if it handles any better since my controller is broken.
    ezgifcom-crop.gif
    Maybe someone wants to try some hot laps ;)
     

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  8. Rainvest

    Rainvest
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    Feels understeery. It sorta handles differently though. FFB felt good too.
     
  9. Tommy1995

    Tommy1995
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    With my G27, i didn't noticed any difference at cornering with this. But have to agree with the interior feeling, feels more safer and you think you just fly over the track, definitely stuff worth keeping.
     
  10. Bernd

    Bernd
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    I guess I should rather put this onto the legran as a weired 80s technology test :p
    On the pigeon this might be pretty useful though.
    Thanks guys!
     
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  11. Miura

    Miura
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    I've been experimenting with various kinds of active suspensions ever since I figured out lua mods. A recent version is quite similar to the Bose system. It has two opposed precompressed beams in each corner, and a lua controller changes their spring rates. This seems to work better than hydros. Sensors for body roll, pitch, vertical and lateral acceleration and suspension lengths are used in PID controllers to set the spring rates.

    As it's for a luxury car, it tries to keep the body as level and smooth as possible, while still following the road. It also leans into corners and has some automatic ride height features. There's a bit of vibration that I can reduce with smoothing, but that makes the suspension less responsive. Still, it works at 2000 Hz and is more stable than anything I've done before.

    Most of my active suspension attempts ended up with vibrating or dancing cars, or just worse than passive suspension..
     
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  12. Rainvest

    Rainvest
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    Do you have any sorts of it in action? Would love to see it in-game!
     
  13. CaptainZoll

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    what about hydraulics strong enough to make the car bounce?
    sorry. I was just playing nfs underground 2.
     
  14. Bernd

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  15. fufsgfen

    fufsgfen
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    That Bose is quite old stuff, not sure if anything really uses it, maybe reliability/cost issue, but those promos were cool when they originally came out.

    2CV has funny suspension too, it is not really active, but behaves bit like active suspension.

    From the old cars Ferrari F40 had some kind of active damper setup, I have forgotten details, but I guess digging the internet one can find anything these days.

    Trucks on the other hand have had anti roll over protection for quite some time, which is kind of active suspension, they put more pressure on air bags on leaning side to keep truck from rolling over. Even ROR had that feature, maybe it was there from beginning but quite early at least?

    I think that steering input and body roll (or maybe g-forces? Lateral G as multiplier 0.0 to 1.0) would be needed to get anti-rolling to work reliably in all situations with cars, in sim making such system is a lot easier than IRL.
     
  16. CaptainZoll

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    you cold probably make something resembling hydropneumatic suspension (like what the citroen ds and cx have)
     
  17. ajc918

    ajc918
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    I think a step forward is a basic air suspension that you could raise and lower in game, but with stepped heights, rather than completely free adjustment.
     
  18. Rainvest

    Rainvest
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    Air suspension has already been modded in game if im not mistaken.
     
  19. Shotgun Chuck

    Shotgun Chuck
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    Another one to feed discussion: McLaren MP4-12C. Has some kind of weird computerized suspension that's supposed to give the benefits of anti-roll bars without the drawbacks. I was just wondering myself if that car's setup would be possible to replicate in BeamNG.
     
  20. atv_123

    atv_123
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    For anyone that is unsure what he is talking about.
     
  21. amarks240

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    I like sway bars. Most of the new super cars do something like that. F488 will soften the outside dampers and let the car squat a little to find grip in a hard corner. The thing is a computer has to make those decisions about what to change based on what it sees the suspension doing when it looks at the sensors every other millisecond. I imagine it's a bit of a job to program that and make it smart enough to actually outperform a good sway bar setup.
     
  22. Spaceballs the Username

    Spaceballs the Username
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    The physics simulation runs at 2000hz, or a calculation every 0.5ms. It should be doable.
     
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