| 摘要 |
<p>A vehicle comprises an improved electric power assist steering (EPAS) system 10, configured to receive a detected value of steering wheel angle and/or steering wheel angular velocity and wherein the EPAS system 10 is configured to improve the accuracy of the detected value of steering wheel angle and/or steering wheel angular velocity. This is achieved by compensating for an angular phasing of the joint 17b between any two linked components of the steering mechanism 10. The phasing may be associated with stiffness, friction, stiction or free-play at a joint 17b. The improved accuracy is alternatively provided by compensating for the effect on steering wheel angle of the deflection across a torque sensor 20. The effect of the deflection is due to low stiffness of the torque sensor 20. The invention is aimed at addressing the need for an appropriate steering feel.</p> |
