A steering actuator apparatus for a vehicle may include: a housing, a driving unit configured to be supported by the housing and generates a driving force, a transmission shaft, which is installed inside the housing to be movable, moves back and forth by receiving the driving force from the driving unit, and varies a steering angle of a wheel, a measurement unit configured to measure the steering angle of the wheel in conjunction with a movement of the transmission shaft, a first rotation prevention unit provided between the housing and the transmission shaft and fixed to the transmission shaft and a second rotation prevention unit, which is detachably coupled to an outside of the housing and interferes with the first rotation prevention unit to prevent relative rotation of the housing and the transmission shaft.

The disclosure relates to a steering control device and method. Specifically, according to the disclosure, a steering control device comprises a first steering control module controlling a first reaction force motor to generate a reaction force torque for a steering wheel through a first inverter and a second steering control module controlling a second reaction force motor to generate a reaction force torque for the steering wheel through a second inverter. The first steering control module or the second steering control module generates the reaction force torque by conducting one of the first inverter and the second inverter when the first inverter and the second inverter fail.

A handwheel actuator assembly 600 for a steer by wire steering system of a vehicle is disclosed. The assembly 600 comprises a steering wheel 601 and a feedback torque generator. The steering wheel 601 has at least one hand grip portion rotatable around an axis of rotation of the steering wheel 601 which can be gripped by a driver and a hub 602 that supports the hand grip portion. The feedback torque generator comprises an electric motor which has a stator 609 and a rotor 610. The rotor 610 is directly or indirectly fixed to and rotates with the hub of the steering wheel 601 and the stator 609 is secured to a fixed part of the vehicle body such that it cannot rotate relative to the vehicle body. The motor comprises a brushless permanent magnet Vernier motor.

A steering control device controls, as a target, a steering device including a steering actuator and a turning actuator that has a structure with a power transmission path cut off from the steering actuator, and can reflect a state of an automated driving command. A control unit is configured to execute: turning-side synchronization control when the absolute value of a deviation amount is a value within a first range; steering-side synchronization control when the absolute value of the deviation mount is a value within a second range that is a larger value than a value within the first range; and at least one of the turning-side synchronization control and the steering-side synchronization control when the absolute value of the deviation amount is a value within a third range that is a value between a value within the first range and a value within the second range.

A steering wheel control apparatus of an SBW (Steer-By-Wire) system may include a dominant controller configured to generate a wake-up signal, in response to an ignition switch of a vehicle being off, a motor driver configured to generate a steering reaction force against a steering wheel through a motor, and a steering wheel controller configured to generate the steering reaction force to interrupt a turn of the steering wheel, by controlling the motor driver according to the wake-up signal.

A method for adapting the steering feel for a driver of a vehicle at an input element of the vehicle is described. The vehicle has a steer-by-wire steering system. The method comprises creating a reference of the steering feel. The method further comprises selecting scaling factors for the reference model such that characteristics of the steering feel remain constant for different steering ratios. The method further comprises adapting the steering feel using the scaling factors.

The invention relates to a steering gear (11) for a vehicle having a helical gear (19), the helical gear (19) having a first gear wheel (21) and a second gear wheel (22) which engages with the first gear wheel (21), a first rotation axis (23) of the first gear wheel (21) being aligned so as to be transverse to a second rotation axis (24) of the second gear wheel (22), and an axis perpendicular (25) being aligned so as to be orthogonal to the first rotation axis (23) and to the second rotation axis (24), a smallest spacing between axes (26) between the first rotation axis (23) and the second rotation axis (24) coinciding with the axis perpendicular (25), and an engagement line (33) resulting by means of common contact points (34) of the two mutually engaged gear wheels (21, 22). In order to increase the diversity in terms of variants and/or to improve the adaptation possibilities, the steering gear (11) is characterized in that the engagement line (33) is spaced apart from the axis perpendicular (25).

A steer-by-wire steering system for a vehicle includes a rack moveable in an axial direction, the rack having a bushing engagement portion comprising an outer surface including a plurality of rack flat surfaces. The steering system also includes an anti-rotation bushing disposed proximate an outer surface of the rack at the bushing engagement portion of the rack, the anti-rotation bushing having a plurality of bushing flat surfaces, wherein the number of the plurality of rack flat surfaces and the number of the plurality of bushing flat surfaces is identical.

A steer-by-wire steering system, including a steering device including a dual-system steering motor including a main system and a sub system, wherein a power supply to the main system is conducted selectively by a main power source and a backup power source, and a power supply to the sub system is conducted by only the main power source, wherein, in a normal power-supply situation in which the power supply to the main system and to the sub system is conducted by the main power source, a controller controls the sub system to operate in accordance with the main system, and wherein, in a backup power-supply situation in which the power supply to the main system is conducted by the backup power source, the controller controls the main system not to operate or to operate while limiting the power supply to the main system and controls the sub system independently.

A steering wheel-based HMI system for a vehicle includes a steer-by-wire system and a control module. The steer-by-wire system includes a steering wheel and a torque feedback unit mechanically connected to the steering wheel. The control module is communicatively connected to the torque feedback unit. The control module is configured to identify a communication, gather information about user securement of the steering wheel, and operate the torque feedback unit to apply a supplementary torque to the steering wheel for haptically issuing the communication through the steering wheel. The supplementary torque has a magnitude that is scaled based on the information about user securement of the steering wheel.