Patent attributes
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.
