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

Table 1

Parameters of SW block.

Parameters	Values
Stiffness of torque sensor 𝑘𝑇𝑠	176 Nm/rad
Equivalent moment of inertia 𝐽ℎ	0.022 kgm^2
Equivalent moment of inertia 𝐽𝑐	0.116 kgm^2
Equivalent damping coefficient 𝐶ℎ	0.02 Nms/rad
Equivalent damping coefficient 𝐶𝑐	0.13 Nms/rad
Reduction ratio of worm and gear 𝑔𝑐	15