Abstract: Embodiments of the present invention provide an electric machine control system for a vehicle, the electric machine control system comprising one or more controllers, wherein the vehicle comprises an electric machine arranged to be selectively coupleable to provide torque to at least one wheel of an axle of the vehicle, the control system comprising input means to receive a speed signal indicative of a speed of the vehicle, processing means arranged to determine a desired coupling state (525) of the electric machine to the at least one wheel of the axle in dependence on the speed signal, wherein the processing means is arranged to determine the desired coupling state as coupled in dependence on the speed signal being indicative of a vehicle speed equal to or below a first low-speed threshold (910) and to determine the desired coupling state as no-request in dependence on the speed signal being indicative of a vehicle speed above a second low-speed threshold (920), wherein the second low-speed threshold repres

Abstract: An electric machine control system for a vehicle having an electric machine arranged to be selectively couplable to provide torque to a wheel of an axle. An input receives a fault-derived coupling state request signal and a further coupling state request signal. Each coupling state request signal is indicative of a request for a coupling state of the electric machine to the wheel of the axle. A processor determines the coupling state of the electric machine to the wheel of the axle in dependence on the fault-derived coupling state request signal and the further coupling state request signal. The processor determines the coupling state of the electric machine in precedence on the fault-derived coupling state request signal over the further coupling state request signal. A coupling signal indicative of the determined coupling state is output to control coupling of the electric machine to the wheel of the axle.

Abstract: Embodiments of the present invention provide an electric machine control system for a vehicle, the electric machine control system comprising one or more controllers, wherein the vehicle comprises an electric machine arranged to be selectively coupleable to provide torque to at least one wheel of an axle of the vehicle, the control system comprising input means arranged to receive a speed signal (410) indicative of a speed of the vehicle and a status signal (470) indicative of a status of a coupling of the electric machine to the at least one wheel of an axle of the vehicle, output means (340) arranged to output a coupling signal to control coupling of the electric machine to the at least one wheel of the axle, and processing means arranged to determine (1210) a coupling state of the electric machine to the at least one wheel of the axle and to control the output means to output (1220) a coupling signal indicative of the determined coupling state, wherein the processing means is arranged, in dependence on the

Abstract: A method and control system for controlling operation of a thermal control apparatus, the thermal control apparatus configured for thermal control of an energy storage means of a vehicle, the method comprising: obtaining a parameter indicative of a state of health of the energy storage means; and controlling operation of the thermal control apparatus in dependence on a difference between the parameter and a target, wherein the target is indicative of expected state of health, and wherein a rate of change of the target varies in association with cumulative energy throughput of the energy storage means.

Abstract: Embodiments of the present invention provide a control system (200) for an electric machine (120) of a vehicle, the control system comprising one or more controllers, the control system comprising input means (230) to receive a torque communication signal (255) indicative of torque communication through a belt (130) associated with the electric machine, processing means (210) arranged to determine a torque limit for the electric machine in dependence on the torque communication signal and a first torque threshold, and output means (240) arranged to output a torque limit signal (245) in dependence on the torque limit to control the torque communicated through the belt associated with the electric machine.

Abstract: Embodiments of the present invention provide an electric machine control system for a vehicle, the electric machine control system comprising one or more controllers, wherein the vehicle comprises an electric machine arranged to be selectively coupleable to provide torque to at least one wheel of an axle of the vehicle, the control system comprising input means to receive at least one attribute signal indicative of one or more attributes (410, 420, 430) of the vehicle and an efficiency signal (440) indicative of selection of an efficiency-based driving mode, output means arranged to output a coupling signal to control coupling of the electric machine to the at least one wheel of the axle, processing means arranged to determine (1510) a first coupling state of the electric machine to the at least one wheel of the axle in dependence on the at least one attribute signal and to determine (1520) a second coupling state of the electric machine to the at least one wheel of the axle in dependence on the at least one

Abstract: Embodiments of the present invention provide An electric machine control system for a vehicle, the electric machine control system comprising one or more controllers, wherein the vehicle comprises an electric machine arranged to be selectively coupleable to provide torque to at least one wheel of an axle of the vehicle, the control system comprising input means (330) to receive at least one attribute signal (410-4X0) indicative of one or more attributes of the vehicle (100), output means (340) arranged to output a coupling signal (345) to control coupling of the electric machine to the at least one wheel of the axle (222), and processing means (310) arranged to determine (1310) a coupling state of the electric machine (212) to the at least one wheel of the axle in dependence on the at least one attribute signal, wherein the processing means is arranged to control the output means to output the coupling signal (345) indicative of the determined coupling state, wherein the processing means is arranged to defer

Abstract: A control system for controlling electrical power consumption from energy storage means by a traction motor of a vehicle caused by a wheel slip event includes: one or more electronic controllers configured to: receive a torque request for the traction motor; determine a current known prevailing speed value of the traction motor; determine a maximum allowable increase in speed of the traction motor of to occur during a latency period associated with the prevailing speed value of the current known speed of the traction motor; determine an electrical power consumption limit in dependence on the torque request, the current known prevailing speed value of the traction motor of the vehicle and the maximum allowable increase in speed of the traction motor; and control torque provision of the traction motor in dependence on the torque request and the electrical power consumption limit.

Abstract: Embodiments of the present invention provide an electric machine control system for a vehicle, the electric machine control system comprising one or more controllers, wherein the vehicle comprises an electric machine arranged to be selectively coupleable to provide torque to at least one wheel of an axle of the vehicle, the control system comprising input means to receive (1110) a fault-derived coupling state request (430) signal and (1120) at least one further coupling state request signal, wherein each coupling state request signal is indicative of a request for a coupling state of the electric machine to the at least one wheel of the axle, processing means arranged to determine (1130) the coupling state of the electric machine to the at least one wheel of the axle in dependence on the fault-derived coupling state request signal (430) and the at least one further coupling state request signal, wherein the processing means is arranged to determine the coupling state of the electric machine in precedence on t

Abstract: Aspects of the present invention relate to a method and to a control system for maintaining multi-axle drive capability in a vehicle, the method comprising: operating an internal combustion engine to provide a torque to a first axle of the vehicle, and to a first electric machine to generate electrical power; controlling the generation of electrical power by the first electric machine in dependence on a requirement for torque at a second axle of the vehicle; and operating a second electric machine to receive the electrical power generated by the first electric machine and provide the torque to the second axle.

Abstract: Embodiments of the present invention provide an electric machine control system for a vehicle, the electric machine control system comprising one or more controllers, wherein the vehicle comprises an electric machine arranged to be selectively coupleable to provide torque to at least one wheel of an axle of the vehicle, the control system comprising input means arranged to receive a speed signal (410) indicative of a speed of the vehicle and a status signal (470) indicative of a status of a coupling of the electric machine to the at least one wheel of an axle of the vehicle, output means (340) arranged to output a coupling signal to control coupling of the electric machine to the at least one wheel of the axle, and processing means arranged to determine (1210) a coupling state of the electric machine to the at least one wheel of the axle and to control the output means to output (1220) a coupling signal indicative of the determined coupling state, wherein the processing means is arranged, in dependence on the

Abstract: Embodiments of the present invention provide an electric machine control system for a vehicle, the electric machine control system comprising one or more controllers, wherein the vehicle comprises an electric machine arranged to be selectively coupleable to provide torque to at least one wheel of an axle of the vehicle, the control system comprising input means to receive a speed signal indicative of a speed of the vehicle, processing means arranged to determine a desired coupling state (525) of the electric machine to the at least one wheel of the axle in dependence on the speed signal, wherein the processing means is arranged to determine the desired coupling state as coupled in dependence on the speed signal being indicative of a vehicle speed equal to or below a first low-speed threshold (910) and to determine the desired coupling state as no-request in dependence on the speed signal being indicative of a vehicle speed above a second low-speed threshold (920), wherein the second low-speed threshold repres