The invention relates to a vehicle with coordinated steering. There is a
need for a vehicle wherein Ackerman steered front wheels are coordinated
with differentially steered and driven rear wheels. Such a vehicle
includes Ackerman steerable front wheels and differentially driven left
and right rear wheels. A steered wheel angle sensor is coupled to the
front wheels and generates a steered wheel angle value. A front steering
unit steers the front wheels and a differential drive unit drives the
rear wheels. A control unit is coupled to the steering input sensor, to
the steered wheel angle sensor, and to the front steering unit and the
differential drive unit. The control unit generates the front steering
control signal and the rear drive/steering control signal, and
coordinates the steering operation of the front wheels with the
differential steering/driving of the rear wheels.