Neutral position dynamic self-learning method and system for steer-by-wire system

The invention relates to the technical field of steering systems, in particular to a neutral position dynamic self-learning method and system for a steer-by-wire system. The specific method comprises the following steps: (1) a lower steering execution system passes through various information of the whole vehicle; (2) enabling a neutral position self-learning function of the down steering execution system through a straight movement detection function module; (3) a median self-learning function module of the down steering execution system reads the median learning value from the data storage function module and provides the median learning value to an angle calculation module of the down steering execution module; and (4) a median self-learning function module and an RPS motor rotor position acquisition module calculate the current angle of the downward steering execution system for use by an angle-related function module. Compared with the prior art, the steering-by-wire power-assisted steering system usuall