A method for actuating a vehicle steering actuator which is coupled to a steering gear, comprising: providing an end stop return function with which a first control variable for the vehicle steering actuator can be ascertained, on the basis of which a force that returns the steering gear in the direction of a defined position can be at least partially generated with the vehicle steering actuator; ascertaining whether the steering gear falls below a limit distance from an end stop; and if this is the case: actuating the vehicle steering actuator on the basis of the first control variable ascertained with the end stop return function, which control variable has a value above a threshold value; wherein, if the limit distance is not fallen below, no control variable is ascertained with the end stop return function or a control variable with a value not exceeding the threshold value.

The present invention is the electric power steering apparatus that drives a motor based on the current command value and assist-controls a steering system by a driving-control of the motor, comprising: a handle-returning control section to calculate the target steering angle velocity for handle-returning based on the steering torque, the current command value, a vehicle speed, a steering angle, calculate the handle-returning control current based on a deviation between the steering angle velocity and the target steering angle velocity, and interpose a filter, which motion characteristic, in a calculation path of the target steering angle velocity, wherein the motor is driven by the corrected current command value by using the handle-returning control current.

A steering control system includes a steering-motor for turning wheels, a reaction-force-motor for applying a reaction torque to a steering of the vehicle, and a controller. The controller calculates a turning angle based on a first-characteristic representing a relationship of the turning angle to a steering angle, and calculates a reaction torque based on a second-characteristic representing a relationship of a reaction torque to the steering angle. The controller changes the first-characteristic from a characteristic corresponding to a first-state to a characteristic corresponding to a second-state in response to a change in the state of the vehicle from the first-state to the second-state. The controller maintains the second-characteristic at the characteristic corresponding to the first-state when the state of the vehicle changes from the first-state to the second-state in the case where the steering angle is steered to a steering limit corresponding to an upper limit of the turning angle.

A steering device includes: a steering unit steered by a driver; a drive unit rotating for imparting an auxiliary force to the steering unit; a first control unit calculating a load torque that corresponds to a reaction force from a road surface and is estimated based on a value measured in the steering unit and the drive unit, the first control unit also calculating a target steering torque for the steering unit based on the calculated load torque; and a second control unit calculating the auxiliary force of the drive unit to achieve the target steering torque calculated by the first control unit.

A method for determining the center of the rack position of a vehicle including initiating a move rack to first extreme routine, whereby the steering column of a vehicle is turned to its furthest most point in a first direction; initiating a move rack to second extreme routine, whereby the steering column of a vehicle is turned to its furthest most point in a second direction opposite from the first direction; initiating a centering routine, whereby the steering column of a vehicle is turned to its center position; and initiating an evaluation routine whereby a steering angle is queried from the steering angle sensor in the vehicle's steering column control module; and vehicles and non-transitory computer-readable media incorporating same.

A vehicle steering assist device in which the steering assist ECU calculates a target steering angle for driving a vehicle along a traveling path, and is vehicle steering assist device that a calculates a target steering guide torque for facilitating the steering angle to become a target steering angle by reducing a return torque for urging the steering wheel to a neutral position in an area where the steering angle is smaller than the target steering angle, wherein when the steering angular velocity is higher than the target steering angular velocity, the steering support ECU calculates a target steering angular velocity control torque acting in a direction opposite to a direction in which the steering angle changes, and controls the control steering torque generating device so as to generate a control steering torque including a sum of the target steering guide torque and the target steering angular velocity control torque.

An electric power assisted steering assembly comprises a steering mechanism which operatively connects a steering wheel to the roadwheels of a vehicle, a sensor adapted to produce a first output signal indicative of the torque carried by a portion of the steering mechanism and to produce a second output signal indicative, an electric motor, a signal processing unit having a lead-lag filter to produce an overall torque demand signal, and a motor drive stage adapted to provide a drive current to the motor responsive to the torque demand signal.

A steering control device which calculates a steering control amount for controlling steering of a vehicle includes a basic control amount calculation unit which calculate a basic control amount, and a steering control amount arithmetic unit which calculates the steering control amount with reference to self-aligning torque caused by a motion state amount of the vehicle and the basic control amount.

A control device includes a processor and a memory that stores a program controlling an operation of the processor to cause the processor to acquire a steering torque, a vehicle speed, a steering angle, and a rotational speed of a motor, generate a base assist torque based on the steering torque and the vehicle speed, generate a self-aligning torque compensation torque based on the steering torque, the vehicle speed, the rotational speed of the motor, and the base assist torque, generate an active return torque based on the vehicle speed and the steering angle, generate a motor loss torque compensation torque based on the rotational speed of the motor, and generate a torque command value to be used to control driving of the motor.

The embodiments of the present disclosure relate to a steering control device and method of a vehicle, specifically, may provide a steering control device and method of a vehicle capable of securing the driving stability by controlling the alignment of the vehicle wheels by rapidly detecting a misalignment between the steering angle of the steering wheel and the steering angle of the vehicle wheel.