Jaguar Land Rover Limited

Paolo Pucci

Alex Bean

A vehicle comprising an electric power assist steering (EPAS) system, wherein the EPAS system is configured to receive a detected value of steering wheel angle and/or steering wheel angular velocity and wherein the EPAS system is configured to improve the accuracy of the detected value of steering wheel angle and/or steering wheel angular velocity by compensating for any one or more of an angular phasing of the joint between any two linked components of the steering mechanism and the effect on steering wheel angle of the deflection across a torque sensor at least substantially due to the stiffness of that torque sensor.

Electric power assisted steering systems

A vehicle comprising a closed-loop electric power assisted steering (EPAS) system comprising a control unit configured to compute an artificial friction component and to compute a desired reference torque (&#x3c4;ref) incorporating the artificial friction component, wherein the artificial friction component is dependent upon steering wheel angle (&#x3b1;).

Closed loop EPAS systems

A vehicle comprising an electric power assist steering (EPAS) system, wherein the EPAS system is capable of receiving a detected value of steering wheel torque and wherein the EPAS system is operable to improve the accuracy of the detected value of steering wheel torque by compensating for a weight imbalance present in the steering wheel.

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Leamington Spa, United Kingdom

Paolo Pucci