A driver support device includes: a drive device configured to change a steering angle being an angle of a steered wheel of a vehicle by applying torque to a steering shaft coupled to a steering wheel of the vehicle; and a control unit. The control unit executes lane departure avoidance control controlling the drive device to change the steering angle to avoid departure of the vehicle from a traveling lane when a start condition is satisfied, and is configured to execute the lane departure avoidance control such that, when a holding position of the steering wheel by a driver does not meet a predetermined specific condition upon satisfaction of the start condition, a magnitude of a steering angular velocity being an amount of change in the steering angle per unit time is smaller than the magnitude when the holding position meets the specific condition upon satisfaction of the start condition.

Techniques are described for managing redundant steering system for a vehicle. A method includes sending a first control command that instructs a first motor coupled to a steering wheel in a steering system to steer a vehicle, receiving, after sending the first control command, a speed of the vehicle, a yaw rate of the vehicle, and a steering position of the steering wheel, determining, based at least on the speed and the yaw rate, an expected range of steering angles that describes values within which the first motor is expected to steer the vehicle based on the first control command, and upon determining that the steering position of a steering wheel is outside the expected range of steering angles, sending a second control command that instructs a second motor coupled to the steering wheel in the steering system to steer the vehicle.

Provided are a lane separation line detection correcting device/method and an automatic driving system for stabilizing the behavior of a vehicle by correcting overestimated curvature information resulting from an erroneous detection of a curvature of a lane separation line. A travel speed detecting circuit detects, for example, a target travel speed as vehicle sensor information. A maximum curvature estimating circuit estimates, based on the target travel speed, a maximum curvature of a road along which an own vehicle is traveling. A curvature correcting circuit corrects a curvature of a lane separation line input thereto based on the maximum curvature. A control unit controls steering of the own vehicle based on the lane separation line having a corrected curvature. As a result, vehicle steering can be automatically controlled so as to prevent the own vehicle while traveling from departing from a driving lane.

A vehicle control system includes: an electric power steering device that generates an assist torque that assists turning of a wheel caused by a steering wheel rotation; a controller that controls the electric power steering device to generate the assist torque according to the steering wheel rotation in a normal mode; and a state sensor that detects a vehicle travel state and a state of an occupant at a driver's seat. When the occupant at the driver's seat performs a getting-on action or a getting-off action when the vehicle is in an ignition-ON state, the controller controls the electric power steering device in a temporal mode. In the temporal mode, the controller changes a method of controlling the electric power steering device such that the steering wheel rotation is suppressed as compared with a case of the normal mode.

A control system for controlling generation of a steering overlay signal to control a trajectory of a host vehicle can include one or more controllers and is configured to identify a lateral boundary of the host-vehicle lane of travel. The control system monitors a position of the host vehicle in relation to the lateral boundary of the host-vehicle lane of travel. A lateral velocity of the host vehicle is determined by the control system. The steering overlay signal is generated based on a determination that the host vehicle is approaching or traversing the lateral boundary of the host-vehicle lane of travel and that the determined lateral velocity is greater than or equal to a first lateral velocity threshold. The control system can determine a lateral separation between the host vehicle and an object.

A steer-by-wire steering system for a motor vehicle or a steering system for an autonomous driving motor vehicle includes a controller configured or programmed to control steering of steerable road wheels depending on a driver's input or an input of an autonomous driving unit and to include a normal mode of operation with full steering functionality and no quality problems, and at least two degraded modes with degraded operation of the steering system. The steering system includes an evaluator to evaluate a state of performance degradation of the steering system and to set the operation mode of the controller based on an evaluation result from the evaluator.

A method of controlling a vehicle includes obtaining a linear representation of a vehicle dynamics model that includes actuator dynamics u integrated with vehicle dynamics x. The actuator dynamics u include a road wheel angle at rear wheels δr and a torque Mz. The method also includes obtaining an objective function based on a function of the vehicle dynamics x and the actuator dynamics u and formulating a cost function to minimize the objective function. The actuator dynamics u including the torque Mz are determined for a next time sample based on minimizing the objective function. The vehicle is controlled to implement the torque Mz.

An apparatus may include a command steering angle control portion removing noise of a first command steering angle and outputting a second command steering angle, a steering angle position control portion compensating for a first steering angle error corresponding to a difference between the second command steering angle and a first current steering angle, and outputting a first command current, a first responsiveness improving portion compensating for a second steering angle error corresponding to a difference between the second command steering angle and a second current steering angle, calculating a first compensation value, and applying the first compensation value to the steering angle position control portion, and a second responsiveness improving portion deriving a compensation gain, calculating a second compensation value on the basis of the first steering angle error and the compensation gain, and applying the second compensation value to the steering angle position control portion.

Disclosed are an apparatus and a method for controlling a lane change using V2V communication information and an apparatus for calculating tendency information for the same. According to the apparatuses and the method, it is possible to improve safety when changing lanes by receiving diving information of drivers of other vehicles from communication modules of the other vehicles, generating tendency information of the drivers of the other vehicles on the basis of the driving information, and performing lane change control using the tendency information.

An apparatus for controlling an MDPS system may include an MDPS-basic logic unit determining a first auxiliary command current for driving an MDPS motor in a manual driving mode, based on column torque applied to a steering column of a vehicle and a vehicle speed, an autonomous driving steering controller determining a second auxiliary command current for driving the MDPS motor in an autonomous driving mode, and a mode change controller determining a driver's steering intervention using a variable reference time variably determined based on the column torque in the manual driving mode, determining a mode change time from the autonomous driving mode to the manual driving mode based on the column torque, and determining a final auxiliary command current for driving the MDPS motor upon mode change, by applying, to the first and second auxiliary command currents, a weight into which the mode change time is incorporated.