Research on Torque Ratio Based on the Steering Wheel Torque Characteristic for Steer-by-Wire System

Table 5

On-center evaluation indices of negative equivalent assist characteristic curve.

Evaluation indices	Value
Lateral acceleration at 0 Nm (g)	0.019
Steering hysteresis (deg)	4.69
Steering fiction torque (Nm)	1.52
Average steering stiffness (Nm/deg)	0.32
Steering torque gradient at 0 g (Nm/g)	33.5
Steering torque gradient at 0.1 g (Nm/g)	9.31
SW torque at 0.1 g (Nm)	2.44