Provided is an electric power steering apparatus capable of achieving stable sensorless control having a small vibration by correcting an estimation error contained in an estimated angle to suppress a torque fluctuation caused by the estimation error. The electric power steering apparatus includes: a torque sensor configured to detect a steering torque of a driver; a motor configured to assist in a steering force of the driver; a rotation angle estimation unit configured to estimate a rotation angle of the motor to output an estimated angle; a correction signal calculation unit configured to calculate a correction signal based on the steering torque; a frequency separation unit configured to separate the estimated angle into a first frequency component and a second frequency component; an estimated angle correction unit configured to calculate, as a control angle, a value obtained by adding a second-frequency-component corrected signal, which is obtained by correcting the second frequency component based on the correction signal, to the first frequency component; and an electric power supply unit configured to supply electric power to the motor based on the control angle.
ELECTRIC POWER STEERING APPARATUS AND ELECTRIC POWER STEERING CONTROL METHOD
ELEKTRISCHE SERVOLENKVORRICHTUNG UND STEUERUNGSVERFAHREN FÜR ELEKTRISCHE SERVOLENKUNG
APPAREIL DE DIRECTION ASSISTÉE ÉLECTRIQUE ET PROCÉDÉ DE COMMANDE DE DIRECTION ASSISTÉE ÉLECTRIQUE
2021-02-24
Patent
Elektronische Ressource
Englisch
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
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