In this study, a new four wheel steering algorithm was proposed, including such input variables of acceleration and yaw acceleration, that handling characteristics may be stable even under acceleration and deceleration. This algorithm includes Sato's algorithm as a special case of zero acceleration. To show the handling characteristics of this algorithm, three other steering algorithms(conventional, Sato's and Sano's) are compared using dynamic simulation package, DADS under ramp-step steering input.
From the comparisons of simulations, it is found that the proposed algorithm prevent both negative side slip of Sano's algorithm and large overshoot value of Sato's algorithm under braking force, and keep the yaw rate constant during steady state.
