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by kube-system
1201 days ago
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To nitpick, simple ABS is an improvement over locking some of the wheels. It often struggles with preventing a lock of all 4 wheels, because it loses reference for the road speed. A dumb ABS system with just wheel speed sensors can't tell if [0,0,0,0] means all 4 are locked, or if you're stationary. I don't know as much about the implementation details of modern ESC systems, but I'm guessing this problem is much easier to solve with accelerometer data. |
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In direction control, sure, but you are getting less braking out of it. The earlier ones could be outbraked by skilled driver keeping brake just at the edge of wheel locking, but that isn't the case for the modern ones, precisely because it can brake each wheel separately
> A dumb ABS system with just wheel speed sensors can't tell if [0,0,0,0] means all 4 are locked, or if you're stationary.
I'm actually curious how they deal with ice, you might be breaking but still getting near zero decceleration from it. Then again if it is that slipper it doesn't matter all that much...