Formula for controlling the movement of a tank-like vehicle?

Question

Anyone know the formula used to control the movement of a simple tank-like vehicle?

To \'steer\' it, you need to alter the force applied the left and right \"wheels\

Answer 1

Well, keep in mind that you're also talking about duration here. You need to find out the forces taking in to account the speed at which the tank turns at (1, -1).

I.E., if the tank takes one second to spin 360˚ at (1, -1), and you want to spin 180˚ in one second, (.5, -.5) would do the trick. If you wanted to spin the same amount in half a second, then (1, -1) would work.

This is all further complicated if you use abs(lrate) != abs(rrate), in which case you'll probably need to break out a pencil!