Abstract: A steer-by-wire system can be controlled using a hypothetical or virtual model of a conventional automotive steering system such as an electric power steering (EPS) system in which a steering wheel is mechanically linked to one or more road wheels. The model of the EPS system may be implemented in algorithms or instructions of software. In order to reconstruct driving feedback similar to the conventional steering system in the steer-by-wire system, the steer-by wire system may use the model of the EPS system. For example, a controller of the steer-by-wire system controls an angular velocity of a steering feedback actuator of the steer-by-wire system operably connected with the steering wheel so as to provide a steering feedback to a driver or operator using the model of the EPS system.

Abstract: The present disclosure relates to a device and method for generating steering reaction torque. In providing a reaction torque to a steering wheel of a steer-by-wire steering system, the device may determine a target frequency according to the rotational speed of the wheel, generate a filtered rack force signal excluding a cutoff band including the target frequency from the rack force signal, generate a target reaction torque signal based on the filtered rack force signal, and generate the reaction torque based on the target reaction torque signal. Therefore, it is possible to improve the steering feeling of the SBW steering system by providing the steering wheel with reaction torque from which unnecessary vibration components such as shimmy and judder are removed.

Abstract: A steer-by-wire system comprises a steering shaft connected to a steering wheel; and a mechanical stop defining end-to-end travel limits of the steering shaft, the end-to-end travel limits comprising a first travel limit end of a first direction and a second travel limit end of a second direction opposite to the first direction. A controller rotates, in response to a signal related to first preset condition(s), the steering shaft toward the first direction until the steering shaft reaches the first travel limit end. And, the controller rotates, in response to a signal related to second preset condition(s), the steering shaft toward the second direction until the steering shaft reaches the second travel limit end. The system can prevent the rotation of the steering wheel using end-to-end travel limits of a mechanical stop of the steering shaft without a locking mechanism when the driver enters or exits the vehicle.

Abstract: The present disclosure relates to an apparatus and a method for controlling steering of a vehicle and, more particularly, for steering independently each of the vehicle wheels by using respective steering controller based on the target steering angle information for each vehicle wheel, determining the normal steering controller among a plurality of the steering controllers, re-determining the target steering angle information of the vehicle wheel connected to the normal steering controller by using a driving information of the vehicle, and steering the vehicle wheels based on the re-determined target steering angle information.

Abstract: A steer-by-wire system comprises a steering shaft connected to a steering wheel; and a mechanical stop defining end-to-end travel limits of the steering shaft, the end-to-end travel limits comprising a first travel limit end of a first direction and a second travel limit end of a second direction opposite to the first direction. A controller rotates, in response to a signal related to first preset condition(s), the steering shaft toward the first direction until the steering shaft reaches the first travel limit end. And, the controller rotates, in response to a signal related to second preset condition(s), the steering shaft toward the second direction until the steering shaft reaches the second travel limit end. The system can prevent the rotation of the steering wheel using end-to-end travel limits of a mechanical stop of the steering shaft without a locking mechanism when the driver enters or exits the vehicle.

Abstract: The present disclosure relates to an apparatus and a method for controlling steering of a vehicle and, more particularly, for steering independently each of the vehicle wheels by using respective steering controller based on the target steering angle information for each vehicle wheel, determining the normal steering controller among a plurality of the steering controllers, re-determining the target steering angle information of the vehicle wheel connected to the normal steering controller by using a driving information of the vehicle, and steering the vehicle wheels based on the re-determined target steering angle information.

Abstract: The present disclosure relates to a vehicle running control apparatus and a vehicle running control method. The invention calculates a compensation torque for preventing the pulling of the vehicle by reflecting the speed difference between the driving wheel and the driven wheel of the vehicle, thereby enabling the vehicle to run more stably as compared to the prior art.

Abstract: The present invention relates to a technology for controlling an electric power steering apparatus. According to the present invention, a difference in steering feeling according to a change of a mechanical characteristic of an electric power steering apparatus can be corrected so that the sense of difference in steering felt by a driver when using the steering apparatus can be minimized and the reliability in relation to the apparatus can be enhanced.

Abstract: The present disclosure relates to a vehicle running control apparatus and a vehicle running control method. The invention calculates a compensation torque for preventing the pulling of the vehicle by reflecting the speed difference between the driving wheel and the driven wheel of the vehicle, thereby enabling the vehicle to run more stably as compared to the prior art.

Abstract: Disclosed herein are an electric power steering control apparatus and method. The electric power steering control apparatus includes a first determination unit which determines whether or not first current torque estimation information is in a first state of being out of a preset first reference torque estimation information range, a second determination unit which determines, if the first current torque estimation information is determined to be in the first state, whether or not second current torque estimation information is in a second state of being out of a preset second reference torque estimation information range, a drive unit which drives or shuts off an EPS device depending upon at least one determination of the first and second determination units, and a control unit which controls the drive unit so that the EPS device is driven or shut off.

Abstract: The present invention relates to a technology for controlling an electric power steering apparatus. According to the present invention, a difference in steering feeling according to a change of a mechanical characteristic of an electric power steering apparatus can be corrected so that the sense of difference in steering felt by a driver when using the steering apparatus can be minimized and the reliability in relation to the apparatus can be enhanced.

Abstract: An electric power steering apparatus includes a temperature sensor measuring a temperature at a starting of a vehicle, a motor position sensor detecting a relative steering angle of a motor, a cumulative transfer calculation unit calculating a cumulative transfer quantity of a rack bar by information detected in the motor position sensor, a counter calculating an elapsed time from a starting time of the vehicle, a friction coefficient determination unit determining a friction coefficient according to information inputted from the temperature sensor, the cumulative transfer quantity calculation unit, and the counter, respectively, by using a setting map of a friction coefficient, and a target current calculation unit calculating a compensation quantity for a friction by using the friction coefficient determined in the friction coefficient determination unit and determining a target current.

Abstract: The present invention relates to a technology related to angle control and automatic parking, and more particularly to an angle control method and apparatus for improving angle control quality so as to make the movement of a steering handle smooth, and an automatic parking system using the same.

Abstract: An electronic steering apparatus is provided. The apparatus includes a housing, a worm wheel provided in the housing, a worm axis engaged with the worm wheel in the housing, a bearing installed on the outer circumference of one side of the worm axis, and a resilient member supporting the one side while varying in its angle relative to the axial direction of the worm axis along with the movement of the worm axis, thereby providing an effect of compensating for a gap between the worm and the worm wheel.

Abstract: The present invention relates to a technology related to angle control and automatic parking, and more particularly to an angle control method and apparatus for improving angle control quality so as to make the movement of a steering handle smooth, and an automatic parking system using the same.

Abstract: Disclosed is an electric power steering apparatus including a steering system for receiving a steering torque of a steering wheel to steer wheels and an auxiliary power mechanism applying auxiliary steering power to the steering system, and a method of controlling a current of the electric power steering apparatus.

Abstract: Disclosed is a method and an apparatus for controlling steering force, by which every driver can feel a steering sense that the driver wants. In the method, a torque signal is compensated for by using a compensation value input by a driver, and the steering force is controlled using the compensated torque signal, so as to provide every driver with a satisfactory steering sense and a convenience in handling the steering wheel.

Abstract: An electronic steering apparatus is provided. The apparatus includes a housing, a worm wheel provided in the housing, a worm axis engaged with the worm wheel in the housing, a bearing installed on the outer circumference of one side of the worm axis, and a resilient member supporting the one side while varying in its angle relative to the axial direction of the worm axis along with the movement of the worm axis, thereby providing an effect of compensating for a gap between the worm and the worm wheel.

Abstract: The present invention relates to a method of controlling recovery in an electric power steering system which can enhance the recovery control function during recovery after steering when discriminating a recovery state using a steering angle and a steering angular velocity by determining whether or not the steering angular velocity is more than a predetermined value and carrying out recovery control only in the corresponding recovery state. The method of controlling recovery of the present invention comprises a first step of setting a recovery gain and a recovery pattern; a second step of obtaining a recovery current; a third step of determining whether the steering angular velocity is more than a predetermined value; and a fourth step of obtaining a motor driving current and performing the recovery control function by controlling the operation of the motor according to the obtained motor driving current.

Abstract: The present invention relates to a method of controlling recovery in an electric power steering system which can enhance the recovery control function during recovery after steering when discriminating a recovery state using a steering angle and a steering angular velocity by determining whether or not the steering angular velocity is more than a predetermined value and carrying out recovery control only in the corresponding recovery state. The method of controlling recovery of the present invention comprises a first step of setting a recovery gain and a recovery pattern; a second step of obtaining a recovery current; a third step of determining whether the steering angular velocity is more than a predetermined value; and a fourth step of obtaining a motor driving current and performing the recovery control function by controlling the operation of the motor according to the obtained motor driving current.