An electric power steering system includes a second shaft coupled to a first shaft via a torsion bar, a basic driver torque estimation unit (extended state observer) configured to estimate a basic driver torque by using a disturbance observer based on a torsion bar torque and a rotation angle of the second shaft, a gravity torque calculation unit configured to calculate, by using a rotation angle of a steering wheel, a gravity torque applied to the first shaft by gravity acting on the center of gravity of the steering wheel, and a driver torque estimation unit configured to estimate a driver torque by using the basic driver torque estimated by the basic driver torque estimation unit and the gravity torque calculated by the gravity torque calculation unit.
DRIVER TORQUE ESTIMATION APPARATUS AND STEERING SYSTEM INCLUDING THE SAME
TREIBERDREHMOMENTSCHÄTZUNGSVORRICHTUNG UND LENKSYSTEM DAMIT
APPAREIL D'ESTIMATION DE COUPLE DE CONDUCTEUR ET SYSTÈME DE DIRECTION LE COMPRENANT
2019-11-20
Patent
Elektronische Ressource
Englisch
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
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