I started playing with force feedback wheels, and as I noticed this is the point where most people had already given up or it's just simply out of their interest.
Anyway, I'm having a hard time finding good writings about decent force feedback "simulation", so I have to take the hard way, figuring it out.
Hopefuly some of you are also into this topic
Here are some notices and questions that arose:
- There is a strange behavior even if driving straight, the steering wheel wants to "go slalom", I noticed the same effect with some AAA driving game, but not with Gran Turismo. Maybe it's the toe-in or camber that generates some torque, which are not equal for both wheels and "magnifies" with speed. My quick solution is to have a dead-zone and some damping at the center, so I can release the wheel at 300km/h and not hitting the wall
But it feels there is no grip around the center. It builds up as I turn but not instantly.
- I'm using the good old Pacejka to get the aligning moment, but it not incorporates the caster angle, is that an important factor, or can that be neglected? Also, where should the Mz curve's peak be? At the peak of Fy's? Or should it go back to zero at Max Fy?
- Road surface feedback is what I did yesterday. I'm using constant force for aligning moment, so it seemed obvoius that I should add some "noise" to the current FF force depending on the surface, but it just doesn't make that rumble effect that I expected. Am I on the good way or should I turn my attention to custom FF effects?
That's all I can remember now, and thanks for every help, ideas and opinions...ect.
By the way, this is where I'm now: