A method of controlling an electric power steering system of a vehicle is provided. The method estimates steering rack force to be caused by a tire of the vehicle and a surface of a ground with which the tire is in contact in response to determining that one or more hand wheel torque sensors of the vehicle are not enabled. The method generates a steering assist torque command based on the estimated steering rack force. The method controls the electric power steering system using the steering assist torque command.
Providing assist torque without hand wheel torque sensor for zero to low vehicle speeds
2016-08-09
Patent
Electronic Resource
English
PROVIDING ASSIST TORQUE WITHOUT HAND WHEEL TORQUE SENSOR FOR ZERO TO LOW VEHICLE SPEEDS
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European Patent Office | 2016
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