Based on the plane kinematics theory

mathematical model which acts on steering transmission mechanism matched with the super-modulus gear steering is established

some parameters

such as the length of trapezoid arm

transmission angle and insertion distance is optimized using optimal toolbox of Matlab.Relative to the original design value

it is accuracy to guarantee the steering angle in commonly range

lowers the car’s tyre wear at a high speed for the wheels turning errors

and proves to be feasible.