msauter-nvidia
commented
3 years ago As you have mentioned already, there is, for example, friction and throttle to check. Not sure what you did with respect to throttle but I imagine you tried to increase the throttle value "slowly" over a few frames instead of setting it to 1 immediately (in a real car you don't go to full throttle within 1/60 of a second plus there will likely be assisting logic to make it smoother etc. PhysX does leave that up to the user).
Is your FrictionVsSlipGraph a flat graph?
Do you see the inverse oscillation when you look at the longitudinal slip of the other wheel on the same axle? Something like wheel0 wheel1 (+) (-) (-) (+) ...
Some other things that come to mind:
- check if decreasing LongitudinalStiffnessPerUnitGravity helps or if it makes it worse. If stiffness is too high, you might need smaller simulation time steps
- maybe your engine is a bit too strong. You could try to see what effect decreasing peak torque has.
- maybe the gearing ratio for first gear is rather high
hi team, When the car speeds up, the tires always skid at first.I tried to modify the throttle, friction, etc., and it still skidded.How to stop it from slipping.