A line marking device (1) comprising a cart (2) with at least one steerable wheel (3) and at least two moving elements (4, 5). The steerable wheel (3) is rotatable around its axle (13) and pivotable such that the cart (2) is steered in a desired direction. The line marking device (1) comprises a GNSS receiver (7) or a robotic total station mounted on the cart (2). The line marking device (1) also comprises at least one spray nozzle (8), for marking a line, which is mounted on the cart and directed towards the ground below the line marking device (1). The device (1) comprises an interface mounted on the cart for a comparator to compare a detected location by the GNSS receiver (7) to a predetermined pattern. The cart (2) may comprise a motor (14) which is adapted to pivot the steerable wheel (3) towards an intended movement.

An exemplary work vehicle includes a steering wheel, a steering shaft that supports the steering wheel, a steering motor that enables automatic steering of the steering wheel, and a switching mechanism that switches a power transmission state existing between the steering motor and the steering shaft between a connection state and a shutoff state.

A steering system for a vehicle, including an input shaft, via which a steering force can be input by a steering element, an output shaft acting on a steering actuating mechanism, a coupling for connecting and disconnecting the input shaft and the output shaft with and from each other, respectively, and at least one actuator, by which the coupling can be actuated to couple and uncouple the input shaft and the output shaft with and from each other, wherein in the uncoupled state, the output shaft is independently rotatable relative to the input shaft in such a manner that a steer-by-wire drive controllable by a control unit is provided.

One object is to provide a steering device that facilitates disengagement of a speed reducer so that, for example, when the speed reducer fails, the speed reducer can be disengaged to enable steering of a vehicle with a manual operational force alone. This application relates to a steering device provided with a steering mechanism and a speed reducer. The steering mechanism steers tires of a vehicle under a steering force from a steering wheel. The speed reducer is connected to a motor for outputting a steering assistance force corresponding to the steering force. The speed reducer enlarges the steering assistance force and transmits the enlarged steering assistance force to the steering mechanism. The speed reducer is connected to the steering mechanism via a speed reducer arm.

A steering system includes a clutch that is disposed in a steering force transmission path between a steering wheel and steered wheels and that mechanically disconnects the steering force transmission path when energized, and mechanically connects the path when de-energized, and a an upstream sensor and a downstream sensor each of which detects at least one of a steering torque and a steering angle in the steering force transmission path. At least one of the upstream sensor and the downstream sensor detects an energization status of the clutch. A detected value of at least one of the steering torque and the steering angle is corrected using a first correction value when the clutch is energized, and the detected value of at least one of the steering torque and the steering angle is corrected using a second correction value different from the first correction value when the clutch is de-energized.

A steering wheel controller is mountable to a steering wheel of a vehicle having a steering wheel axis and rim, the steering wheel rim having hand gripping surfaces that face away from the steering wheel axis. The steering wheel controller includes a steering wheel mount, a wheel ring, and at least one ring driver. The steering wheel mount is securable to the steering wheel without obstructing the hand gripping surfaces. The wheel ring is connected to the steering wheel mount, and defines a wheel ring axis of rotation. When the steering wheel mount is secured to the steering wheel, the wheel ring is located rearward of the steering wheel. The at least one ring driver is engageable with the wheel ring, and when engaged with the wheel ring controllable to selectively torque the wheel ring to rotate with the steering wheel mount about the wheel ring axis of rotation.

Vehicle steering can be synchronized by first, turning the steering rack from lock-to-lock to determine a steering rack midpoint, second, turning the steering wheel from lock-to-lock to determine a steering wheel midpoint, third, synchronizing the steering rack with the steering wheel based on the steering rack midpoint and the steering wheel midpoint, and fourth, piloting a vehicle based on the synchronized steering rack and steering wheel; wherein the steering rack is mechanically decoupled from a steering wheel of the vehicle before turning the steering rack from lock-to-lock and before turning the steering wheel from lock-to-lock.

A steering apparatus is provided which can suppress unintended movement of a steering wheel when a clutch is engaged. When a power switch is turned off and a steering wheel is steered, a reaction force control circuit makes a reaction force motor to generate a steering reaction force stronger than a normal steering reaction force to give a driver an appropriate feeling of response according to a steering torque. The strong steering reaction force is applied to a steering shaft to suppress steering of the steering wheel. A steering operation control circuit executes steering operation control, that is, control that makes an actual steered angle equal to a target steered angle based on a steering angle, and then a clutch is engaged. The clutch is engaged after confirmation of an immovable state of steered wheels, and thus rotation of the steering wheel unintended by the driver is suppressed.

Vehicle steering can be synchronized by first, turning the steering rack from lock-to-lock to determine a steering rack midpoint, second, turning the steering wheel from lock-to-lock to determine a steering wheel midpoint, third, synchronizing the steering rack with the steering wheel based on the steering rack midpoint and the steering wheel midpoint, and fourth, piloting a vehicle based on the synchronized steering rack and steering wheel; wherein the steering rack is mechanically decoupled from a steering wheel of the vehicle before turning the steering rack from lock-to-lock and before turning the steering wheel from lock-to-lock.

A steer-by-wire assembly for a steering system in a vehicle is described. The system includes a shaft rotatable in response to a steering input, a clutch that includes a brake member rotatable with the shaft and a reaction member, and an electromagnetic actuator that is selectively actuated to selectively provide a force to selectively engage the brake and reaction members. When the actuator is not actuated, the force between the brake and reaction members limits or prevents rotation of the brake member relative to the reaction member. And when the actuator is actuated, the force between the brake and reaction members is reduced or removed to permit rotation of the brake member relative to the reaction member.