I understand that some robots just use motors all four or two wheels but why not make a more commonly used practice of making the stering wheels turn
Ackermann steering drives
Ackermann steering drives straighter than differential steering, requiring only little corrections on the route. But turning on the spot it’s way cooler.
A robot may also drive itself straight with Ackermann steering, but it needs to know the exact position of the steer. In RC cars it’s fine because it makes controlling more intuitive, and doesn’t require two matched motors.
I don’t know
It would seem to be more natural, but I can’t drive an RC car at all, while I can drive an RC tank (the tank has differential steering, while the cars have Ackermann steering).
I want to get rich enough to buy one of those Russian RC tanks at 1/4 scale. Expensive, but beautiful. And lots of room to make it autonomous. Think of it as an anti-burglar measure. It detects a burglar, drives near him, points the barrel and says (Maybe in Samuel Jackson’s voice), “Turn and leave immediately or I’ll blow your mother-…ing brains out.”
I would argue you actually
I would argue you actually do see them quite often, and will be ubiquitous very soon 