Jaguar Land Rover Limited

Alex Bean

Paolo Pucci

James Kelly

Andrew Fairgrieve

Daniel Woolliscroft

Paul Beever

Nick Brockley

Jan Pieter Prins

Charlotte Cooke

Jon Parr

A motor vehicle controller configured to: receive a drive demand signal indicating an amount of net drive to be applied to one or more driving wheels of a vehicle, estimate a value of a parameter indicative of a surface coefficient of friction between one or more driving wheels and a driving surface, and apply a net torque to one or more wheels of a vehicle. The amount of net torque applied is determined in dependence at least in part on the received drive demand signal. The controller is configured to increase an amount of net torque applied to one or more driving wheels independently of the drive demand signal and to update an estimate of the parameter in dependence on a change in speed of the at least one driving wheel when the amount of net torque applied to the at least one driving wheel is increased.

Motor vehicle controller and method

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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Coventry, United Kingdom

Alex Bean