動力かじ取装置における双動型サーボ機構の効果

抄録

The self-aligning moment at the king-pin can be transmitted to the steering wheel as the restoring moment through the powered steering system, if a bilateral servomechanism is used as its servo-unit. In this paper the influence of this restoring force on the stability of the lateral motion of an automobile is studied, making us of the root-locus method. The results show that (1) the motion may become unstable, if the restoring force is not given to the steering whel, (2) there is an optimum ratio of the restoring moment at the steering wheel to the king-pin moment, and (3) the restoring force can be given by a spring installed to the steering mechanism, but in this case the lateral motion may become unstable at high speed.