Method for optimizing steering sensitivity of vehicle steering system

A method for optimizing the steering sensitivity of a vehicle steering system comprises a vehicle to be assembled, the vehicle steering system comprises a steering wheel, and the steering wheel is connected with a steering gear after sequentially passing through a steering column and an intermediate shaft, and the method comprises the following steps that the installation angle of the intermediate shaft on the steering column is adjusted; when the steering wheel is in the steering neutral position, the rotation speed ratio of the intermediate shaft is located at the peak value of the ratio, and the installation angle is the rotation angle of a joint fork of the intermediate shaft relative to the steering column; by adjusting the rotation angle of the joint fork of the intermediate shaft relative to the steering column, under the condition that hardware of the steering system is not changed, namely redesign and manufacturing of parts are not involved, the transmission ratio of the steering system is minimum, a