STEERING SYSTEM WITH AUTOMATIC INCREASE OF RATE TIME

摘要

An automotive steering system including means for producing a commanded course change which is the difference between the preset course and a desired course and including an operational unit capable of accomplishing proportional and differential control and having rate feedback and in which a position feedback signal is applied to the input of the operational unit through a circuit which has a dead zone feature such that when the position feedback signal exceeds a predetermined level the time constant of the operational unit is changes so as to prevent over-shoot of the autopilot when making large corrections.