Abstract
This paper proposes a new hitch control method to improve the tracking ability of a towed trailer. Though steering controls of a trailer's wheels have been used to obtain better trailer tracking performance, such a control device requires a steering mechanism attached to the trailer's wheels. Consequently it cannot be applied to conventional trailers. This paper proposes that the tracking ability of a trailer can be enhanced when it is pulled by the movable hitch point of a tractor. This type of control system can be used with any conventional trailer without modifying the trailer itself. This paper describes the development of the control system, theoretically examines hitch position control, and evaluates the performance of the control through computer simulations and experiments. Finally, the advantages and disadvantages of the hitch position control are discussed.
