Electric power steering system
AssigneeNsk Ltd.
InventorsTakayoshi Sugawara, Takuya Masuko, Tomoki Fukuda, Hideki Sawada
Life of this patent
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Abstract
An electric power steering system is provided that is capable of performing assist control in which a change in a steering feel is reduced. The electric power steering system includes a current command value calculating unit configured to output a current command value Iref1 in accordance with steering torque and a vehicle speed on the basis of an assist map. The current command value calculating unit includes a vibration component reducing section configured to reduce a vibration component resulting from vibrations for warning that have been transmitted to a steering wheel and included in the steering torque.
Claims6
An electric power steering system configured to drive a motor based on an assist map in which a current command value in accordance with steering torque and a vehicle speed is defined and configured to perform assist control on a steering system of a vehicle, the electric power steering system comprising:
- a current command value calculating unit configured to output a current command value in accordance with the steering torque and the vehicle speed, based on the assist map, wherein
- the current command value calculating unit includes a vibration component reducing section configured to reduce a vibration component resulting from vibrations for warning that have been transmitted to a steering wheel, the vibration component being included in the steering torque.
Dependencies are inferred from the claim text.