A method can be used to control a steer-by-wire steering system for a motor vehicle that has two axles each with two wheels. Two front wheels can be steered by front-wheel steering and two rear wheels can be steered by rear-wheel steering. The motor vehicle includes a single wheel drive that is assigned to one of the two axles and drives the two wheels of the corresponding axle via a differential. The motor vehicle comprises an inboard braking system. The method involves checking the motor vehicle speed and activating rear-axle steering when a motor vehicle speed should be slower than 40 km/hr. With rear-axle steering active, the following steps are performed: deactivating front-wheel steering and rear-wheel steering, determining a reference position of a first steering rod via a reference wheel steering angle, determining a differential drive torque between the rear wheels to reach the reference position via a control unit.

A coupling structure of suspension may include an assist knuckle, a RevoKnuckle rotatably engaged with the assist knuckle, rotated independently from the assist knuckle, and performing steering of a wheel located at an outermost periphery, a steering input portion fixed to a vehicle body and applying a steering force to the RevoKnuckle during steering, a rotation transfer unit located between and coupled between the RevoKnuckle and the steering input portion and absorbing angular displacement formed between the steering input portion and the RevoKnuckle, a first link unit having one end located on one side surface of the assist knuckle and the other end located at a lower end of the RevoKnuckle, and a second link unit having one end located on the other side surface of the assist knuckle and the other end located adjacent to the other end of the first link unit at the lower end of the RevoKnuckle.

A four wheel independent steering system and the control method thereof is configured to implement an interface provided for independently steering four wheels and an operating mechanism thereof, and the four-wheel independent steering system includes a motion module configured for implementing steering motions by a tilting operation of a steering wheel, and a controller configured to detect a steering signal corresponding to one of the steering motions, and to control steering movement or suspension movement of four wheels based on the detected steering signal.

Provided is a turning function-equipped having a reduced size and having improved strength to an external shock force and improved reliability. The turning function-equipped hub unit includes: a hub unit main body; a unit support member; and a turning actuator. The unit support member is provided to a chassis frame component. The unit support member includes an abutment part with which a part of the hub unit main body is brought into abutment in a vertical direction during non-normal time, the abutment part being separated from the hub unit main body in the vertical direction during normal time, and the non-normal time in which the abutment is caused, is a time when an impact load equal to or greater than a predetermined value acts on the hub unit main body in the vertical direction due to an external force from the wheel.

A vehicle steering system is applied to a vehicle including wheels including at least turning wheels and includes a steering member, a reaction actuator, a turning device, and an electronic control unit. The electronic control unit is configured to: control the turning device based on a target turning angle corresponding to an amount of steering of the steering member; control the reaction actuator such that a steering reaction force based on a first turning axial force corresponding to the target turning angle and a second turning axial force corresponding to an output current or an output torque of the turning device is generated; and change a first proportion of the first turning axial force distributed to the steering reaction force and a second proportion of the second turning axial force distributed to the steering reaction force based on a slip rate of the wheels.

A four-wheel independent steering system and a method of controlling the four-wheel independent steering system. The four-wheel independent steering system includes a front/rear-wheel-angle-ratio calculation unit to calculate a ratio Kss between front and rear wheel angles that allows a body slip angle to converge to ‘0’ and allows a yaw angle and a yaw rate to maintain target values, and a control unit to perform four-wheel steering control based on the ratio Kss between the front and rear wheel angles.

To be self-propelled in a simple configuration and to perform manual operation smoothly and briskly. A driving wheel includes: a base portion; a rotating shaft (first shaft) rotatably provided with respect to the base portion; a rotation member rotatably provided around the rotating shaft; a drive shaft (second shaft) provided on the rotation member orthogonally to the rotating shaft; a drive wheel provided on the rotation member and rotatable around the drive shaft; a drive unit provided on the rotation member and configured to rotationally drive the drive wheel; and a lock mechanism configured to permit rotation of the rotation member with respect to the base portion, and meanwhile, to deter the rotation of the rotation member with respect to the base portion.

A method for controlling a wheel axle assembly of a vehicle. The vehicle comprises a vehicle body with a longitudinal axis extending in a longitudinal direction, a transversal axis extending in a transversal direction and a vertical axis extending in a vertical direction. The longitudinal axis, the transversal axis and the vertical axis are perpendicular to each other.

The longitudinal direction corresponds to an intended direction of travel of the vehicle and the vertical direction being parallel to a vertical line when the vehicle is positioned on a flat horizontally extending surface. The vehicle body comprises a vehicle body centre plane extending along the longitudinal axis and the vertical axis and separating the vehicle body into two body halves.

A method can be used to control a steer-by-wire steering system for a motor vehicle that has two axles each with two wheels. Two front wheels can be steered by front-wheel steering and two rear wheels can be steered by rear-wheel steering. The motor vehicle includes a single wheel drive that is assigned to one of the two axles and drives the two wheels of the corresponding axle via a differential. The motor vehicle comprises an inboard braking system. The method involves checking the motor vehicle speed and activating rear-axle steering when a motor vehicle speed should be slower than 40 km/hr. With rear-axle steering active, the following steps are performed: deactivating front-wheel steering and rear-wheel steering, determining a reference position of a first steering rod via a reference wheel steering angle, determining a differential drive torque between the rear wheels to reach the reference position via a control unit.

A transport vehicle includes a base, wheels connected to the base, and load receiving elements. At least two of the wheels have a track width therebetween in each of a transverse drive and in a longitudinal drive. The track width in the longitudinal drive and the track width in the transverse drive are each variable. The transport vehicle is transports a load having a longitudinal direction and a transverse direction between the wheels. The transport vehicle is drivable both in the transverse drive and in the longitudinal drive.