STEERING CONTROL APPARATUS OF VEHICLE AND STEERING CONTROL METHOD OF THE SAME

摘要

A steering control apparatus of a vehicle includes a steering motor configured to output a steering torque for steering turning wheel, a steering motor angle sensor configured to detect a rotation angle of the steering motor, a steering motor drive current supply unit configured to supply the steering motor with a steering motor drive current for setting a turning angle of the turning wheel to an angle corresponding to an operation of a steering wheel, a set rotation angle storage unit configured to store beforehand a set rotation angle which is the rotation angle of the steering motor and which corresponds to the set turning angle that is set to an angle smaller than a limit turning angle to which the turning wheel is steerable, and a current supply quantity limiting unit configured to limit a supply quantity of the steering motor drive current.

主权项

1. A steering control apparatus of a vehicle comprising:
a steering motor configured to output a steering torque for steering a turning wheel; a steering motor angle detecting unit configured to detect a rotation angle of the steering motor; a steering motor drive current supply unit configured to supply the steering motor with a steering motor drive current for setting a turning angle of the turning wheel to an angle corresponding to an operation of a steering wheel; a set rotation angle storage unit configured to store beforehand a set rotation angle which is the rotation angle of the steering motor and which corresponds to the set turning angle that is set to an angle smaller than a limit turning angle to which the turning wheel is steerable; and a current supply quantity limiting unit configured to limit a supply quantity of the steering motor drive current not to make the rotation angle detected by the steering motor angle detecting unit greater than the set rotation angle stored beforehand in the set rotation angle storage unit, wherein the current supply quantity limiting unit releases a limit on the supply quantity of the steering motor drive current when determining that a predetermined permission condition is satisfied, wherein the rotation angle of the steering motor is calculated when the turning wheel is steered up to the limit turning angle that is steerable in a state where the current supply quantity limiting unit releases the limit on the supply quantity of the steering motor drive current, and wherein the set rotation angle is updated depending on a deviation between the calculated rotation angle of the steering motor and the set turning angle.