Importance

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Abstract

A dual motor drive assembly, for a handwheel actuator assembly of a vehicle, comprises a housing, a shaft rotatably mounted to the housing, a first gear connected to and configured to rotate with the shaft, first and second motors, each having an output driving a respective output gear, the output gears being engaged with the first gear, a torque allocation arrangement for allocating torque demands to each of the first and second motors according to a first and second mode, wherein in the first mode the torque demand allocated to the first motor follows a first profile and the torque demand allocated to the second motor follows a second profile, wherein the first and second profiles represent defined relationships between a total torque demand and the torque demand allocated to one of the first and second motors, wherein in the second mode the torque demand allocated to the first motor follows the second profile and the torque demand allocated to the second motor follows the first profile, further comprising a switching arrangement operable to switch the torque allocations between the first and second mode.

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First Claim