A steering device includes: a first steering mechanism including a first ball nut steering, and a first motor actuator, the first ball nut steering including a first output shaft, a first ball screw, and a first transmitting mechanism, the first motor actuator arranged to provide a rotation force to the first output shaft, a second steering mechanism including a second ball nut steering, and a second motor actuator, the second ball nut steering including a second output shaft, a second ball screw, and a second transmitting mechanism, the second motor actuator arranged to provide a rotation force to the second output shaft, a connection member arranged to connect the first transmitting mechanism and the second transmitting mechanism so as to interlock a movement of the first transmitting mechanism and a movement of the second transmitting mechanism.

A steering device includes: a first steering mechanism including a first ball nut steering, and a first motor actuator, the first ball nut steering including a first output shaft, a first ball screw, and a first transmitting mechanism, the first motor actuator arranged to provide a rotation force to the first output shaft, a second steering mechanism including a second ball nut steering, and a second motor actuator, the second ball nut steering including a second output shaft, a second ball screw, and a second transmitting mechanism, the second motor actuator arranged to provide a rotation force to the second output shaft, a connection member arranged to connect the first transmitting mechanism and the second transmitting mechanism so as to interlock a movement of the first transmitting mechanism and a movement of the second transmitting mechanism.

A steering control device includes an electronic control unit. The electronic control unit controls operation of a steering-side motor so as to apply a steering reaction force that resists a steering operation input to the steering wheel. The electronic control unit computes an obstruction strike reaction force for regulating a steering operation that steers a steered wheel toward an obstruction. The electronic control unit generates determination information indicating that the steered wheel is struck by an obstruction. The determination information includes first determination information indicating that the left side of the steered wheel is struck by an obstruction, and second determination information indicating that the right side of the steered wheel is struck by an obstruction. The electronic control unit sets a direction in which the obstruction strike reaction force is applied based on the generated determination information.

A steering control device includes an electronic control unit. The electronic control unit controls operation of a steering-side motor so as to apply a steering reaction force that resists a steering operation input to the steering wheel. The electronic control unit computes an obstruction strike reaction force for regulating a steering operation that steers a steered wheel toward an obstruction. The electronic control unit generates determination information indicating that the steered wheel is struck by an obstruction. The determination information includes first determination information indicating that the left side of the steered wheel is struck by an obstruction, and second determination information indicating that the right side of the steered wheel is struck by an obstruction. The electronic control unit sets a direction in which the obstruction strike reaction force is applied based on the generated determination information.

An electric power steering device includes: an information obtaining unit that obtains information on a steering torque acting on a steering wheel of a vehicle, speed of the vehicle, a turn angle of the steering wheel, and an actual yaw rate; a setting unit that sets a steering assist control amount relating to an assist motor based a deviation of the actual yaw rate from a norm yaw rate set based on a traveling state of the vehicle; and a steering assist control unit that performs steering assist control using the assist motor based on the information on the steering torque. The steering assist control unit performs the steering assist control based on the steering assist control amount set by the setting unit.

A system and method control an electro hydraulic power steering system for an electric vehicle having an electric vehicle battery. The power steering system includes an electro hydraulic power steering pump for assisting in movement of a steering wheel. An electronic controller includes an electronic processor configured to: receive a closed or open position for battery contactors from a contactor controller; receive a driving direction signal for the electric vehicle from a driving direction indicator; determine when the battery contactors are closed and when the driving direction signal is in drive or reverse for moving the electric vehicle, and provide an activation signal to operate the power steering pump when the battery contactors are closed and the driving direction signal is in one of drive and reverse. The electronic processor is configured to provide a deactivation signal to the power steering pump when the electric vehicle is not in drive or reverse; and/or the battery contactors are open.

A system and method control an electro hydraulic power steering system for an electric vehicle having an electric vehicle battery. The power steering system includes an electro hydraulic power steering pump for assisting in movement of a steering wheel. An electronic controller includes an electronic processor configured to: receive a closed or open position for battery contactors from a contactor controller; receive a driving direction signal for the electric vehicle from a driving direction indicator; determine when the battery contactors are closed and when the driving direction signal is in drive or reverse for moving the electric vehicle, and provide an activation signal to operate the power steering pump when the battery contactors are closed and the driving direction signal is in one of drive and reverse. The electronic processor is configured to provide a deactivation signal to the power steering pump when the electric vehicle is not in drive or reverse; and/or the battery contactors are open.

The present disclosure relates to an apparatus and a method for controlling a steer-by-wire system. In more details, the present disclosure relates to an apparatus and method for determining whether a catch-up is occurred due to a counter electromotive force in a rack drive motor in a steer-by-wire system and reflecting torque information that has not been output due to the catch-up on a steering reaction force motor, and thus providing an accurate steering sense for a driver.

A vehicle control method for controlling a vehicle using a vehicle control apparatus includes: a sensor configured to detect a state outside a subject vehicle; and a control device. The vehicle control method includes: executing control of recovering a travel trajectory of the subject vehicle to a target trajectory, as ordinary control, by giving a steering amount in a lateral direction with respect to a travel lane of the subject vehicle; using detection data of the sensor to determine whether or not another vehicle is traveling in an adjacent lane to the travel lane of the subject vehicle; and when determining that the other vehicle is traveling in the adjacent lane ahead of the subject vehicle, increasing a response of the steering amount to a higher response than that in the ordinary control, before the subject vehicle passes the other vehicle.

A vehicle control method for controlling a vehicle using a vehicle control apparatus includes: a sensor configured to detect a state outside a subject vehicle; and a control device. The vehicle control method includes: executing control of recovering a travel trajectory of the subject vehicle to a target trajectory, as ordinary control, by giving a steering amount in a lateral direction with respect to a travel lane of the subject vehicle; using detection data of the sensor to determine whether or not another vehicle is traveling in an adjacent lane to the travel lane of the subject vehicle; and when determining that the other vehicle is traveling in the adjacent lane ahead of the subject vehicle, increasing a response of the steering amount to a higher response than that in the ordinary control, before the subject vehicle passes the other vehicle.