An apparatus for estimating a column torque in a motor-driven power steering system includes a vehicle speed sensing unit configured to sense a vehicle speed; a steering sensing unit configured to sense a steering state of a driver; a yaw rate sensor configured to output a measured yaw rate by sensing a tilted state of a vehicle; and a column torque estimation unit configured to calculate a self-aligning torque and an estimated yaw rate based on the vehicle speed and the steering state inputted from the vehicle speed sensing unit and the steering sensing unit, estimate a column torque by adjusting angular velocity compensation gains with respect to a steering angular velocity for each of the estimated yaw rate and the vehicle speed, and output a final column torque by adjusting the estimated column torque according to a difference between the measured yaw rate and the estimated yaw rate.
Apparatus and method for estimating column torque in motor-driven power steering system
2023-03-14
Patent
Elektronische Ressource
Englisch
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