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

Table 3

On-center evaluation indices of SW torque characteristic.

Performance		Evaluation indices
Hysteresis	Lateral acceleration-SW torque	Lateral acceleration at 0 Nm
	SW angle-SW torque	Steering hysteresis
		Steering fiction torque
Sensitivity	SW torque	Average steering stiffness
Road feel	Torque gradient	Steering torque gradient at 0 g
		Steering torque gradient at 0.1 g
	Torque	SW torque at 0.1 g