41results about "Alternative steering control" patented technology

The present invention relates to a safety steering device for manual intervention by a safety driver in an autonomous vehicle or a vehicle with a driver assistance system. The safety steering device comprises a control unit and a joystick operable by the safety driver, from which a steering intervention signal can be transmitted to the control unit, wherein the steering intervention signal overrides an autonomous steering signal. A safety control element is arranged on the joystick, which, when activated by the safety driver, generates a release signal to enable the transmission of the steering intervention signal to the control unit.

A valve (400) for hydraulic parallel work systems (100) is provided. The valve (400) includes a first pair of ports (416, 416a-b), a second pair of ports (422, 422a-b), a first connection, and a second connection. The first connection is between the first pair of ports (416, 416a-b) when the valve (400) is in a load reaction-enabling state (LRQN). The first connection transmits a load reaction (402) from a load at a steering actuator (140) to a steering device of a hydrostatic steering circuit (200). The second connection is between the second pair of ports (422, 422a-b) when the valve (400) is in an electro-hydraulic steering enabling state. The second connection fluidly connects a fluid source (110) to an electro- hydraulic steering circuit (300).

A system for hydraulic parallel work systems is provided. The system includes a fixed displacement pump (110), a closed-center circuit (300), an open-center hand metering unit (HMU) (200), and a tank (120). The closed-center circuit is in fluid communication with the fixed displacement pump. The open-center HMU is in fluid communication with the fixed displacement pump at an inlet port (204) of the HMU. The tank is fluidly connected to the inlet port of the HMU when the HMU is inactive.

An motor vehicle seat for a driver of a motor vehicle includes a frame and one or more control devices coupled to the frame in a movable manner relative to the frame and manually manoeuvrable by the driver to emit electrical control signals configured to drive the motor vehicle according to the movement of the control devices with respect to the frame.

A vehicle control arrangement includes a mechanical interface configured to be interposed between an existing steering wheel column shaft and steering wheel of a vehicle. The arrangement includes at least two drive units, each configured to selectively engage with said mechanical interface upon activation for actuating the steering column shaft to steer the vehicle. Also included are a detector arranged in register with said mechanical interface and configured to detect manual interaction with the steering wheel, and a controller arranged in signal communication with the detector and drive units, the controller configured to, when autonomous control is selected, engage and control at least one drive unit to effect autonomous steering of the vehicle, and when manual interaction is detected, to disengage said drive units. In this manner, a vehicle is retrofittable with said control arrangement to facilitate alternating between autonomous and manual control, as required.

The present disclosure provides an asphalt finisher capable of improving the accuracy of rudder angle control. The asphalt finisher is provided with a plurality of wheels including a steering wheel, a steering cylinder (54) that adjusts the rudder angle of the steering wheel, and a hydraulic pump (55) that supplies working oil to the steering cylinder (54). Furthermore, the asphalt finisher is provided with a proportional control valve (56p) disposed between the hydraulic pump (55) and the steering cylinder (54) and controlling the flow rate and direction of the working oil supplied to the steering cylinder (54), and a controller that controls the rudder angle by controlling the proportional control valve (56p).

A vehicle steering method is provided for a vehicle having a plurality of steering wheels operated by a plurality of users. The method includes obtaining steering information from the plurality of steering wheels of the plurality of users; obtaining priority information of the steering wheels of the corresponding plurality of users; and in response to a user of a steering wheel with a highest priority operates to steer the vehicle, reading the steering information of the steering wheel with the highest priority.

The present disclosure relates to a hydraulic steering system (100) for steering a vehicle with a steering mechanics (112). The hydraulic steering system (100) includes a hydraulic steering unit (101). A single hydraulic steering unit (101) includes two outlet ports (111) configured to allow hydraulic fluid to be discharged from the hydraulic steering unit (101) to the steering mechanics (112) of the vehicle, at least two redundant hydraulic components (108, 109) configured to change a hydraulic flow of the hydraulic fluid and to be fluidically connected to the outlet ports (111), a first steering control device (102) for controlling a first hydraulic component (108) of the at least two hydraulic components (108, 109) and configured to change the hydraulic flow in the hydraulic steering unit (101) and a second hydraulic component (109) configured to change the hydraulic flow in the hydraulic steering unit (101). In order to provide an improved hydraulic steering system, the single hydraulic steering unit (101) further includes a second steering control device (105) for controlling the second hydraulic component (109) of the at least two hydraulic components (108, 109).

To reduce the case where operation becomes complicated when automatic steering is performed in a work vehicle (1), the work vehicle is provided with: a vehicle body (3) capable of traveling forward and backward by either manual steering by a steering wheel (30) or automatic steering; a driver's seat (10) provided to the vehicle body; an operation platform (9F, 9L, 9R) provided in front of or laterally of the driver's seat; a first operation section (50-53) for automatic steering provided to the operation platform; and a second operation section (54, 63) for automatic steering capable of being installed behind the driver's seat.

A system for hydraulic parallel work systems is provided. The system includes a fixed displacement pump (110), a closed-center circuit (300), an open-center hand metering unit (HMU) (200), and a tank (120). The closed-center circuit is in fluid communication with the fixed displacement pump. The open-center HMU is in fluid communication with the fixed displacement pump at an inlet port (204) of the HMU. The tank is fluidly connected to the inlet port of the HMU when the HMU is inactive.

A working machine comprising: a body; a ground engaging propulsion structure for moving the working machine; a first working arm moveably mounted to the body; an operator station mounted on the body; and an operator seat located at the operator station; wherein the operator station comprises primary controls for moving the working machine via the ground engaging propulsion structure, secondary controls for moving the working machine via the ground engaging propulsion structure and first working arm controls for controlling movement of the first working arm relative to the body; the operator seat being moveable between a first position and a second position and in the first position the primary controls are configured to be operable by the operator, in the second position the secondary controls are configured to be operable by the operator and the first working arm controls are configured to be operable by the operator wherein there further comprises a third position intermediate the first position and the second position in which the secondary controls are configured to be inoperable but the first working arm controls are configured to be at least selectively operable.

A vehicle control arrangement includes a mechanical interface configured to be interposed between an existing steering wheel column shaft and steering wheel of a vehicle. The arrangement includes at least two drive units, each configured to selectively engage with said mechanical interface upon activation for actuating the steering column shaft to steer the vehicle. Also included are a detector arranged in register with said mechanical interface and configured to detect manual interaction with the steering wheel, and a controller arranged in signal communication with the detector and drive units, the controller configured to, when autonomous control is selected, engage and control at least one drive unit to effect autonomous steering of the vehicle, and when manual interaction is detected, to disengage said drive units. In this manner, a vehicle is retrofittable with said control arrangement to facilitate alternating between autonomous and manual control, as required.

An assembly for equipping a motor vehicle with dual-steer capabilities has a first bracket assembly configured to couple a first steering column to the vehicle and a second bracket assembly configured to couple a second steering column to the vehicle. A first gearset is coupled to the first bracket assembly and configured for operative engagement with the first steering column. A second gearset is coupled to the second bracket assembly and configured for operative engagement with the second steering column. A cross shaft operatively couples the first gearset to the second gearset. The first gearset is configured to be operatively coupled to a steering gear of the vehicle. The first bracket assembly is configured to facilitate tilting of an upper steering shaft of the first steering column with respect to a lower steering shaft of the first steering column.

The invention relates to a hydraulic steering system for steering a vehicle with a steering mechanism. The hydraulic steering system includes a hydraulic steering unit. A single hydraulic steering unit includes: two outlet ports configured to allow hydraulic fluid to be discharged from the hydraulic steering unit to a steering mechanism of the vehicle; at least two redundant hydraulic components configured to vary a hydraulic flow of the hydraulic fluid and fluidly connected to the outlet port; a first steering control device for controlling a first hydraulic component of the at least two hydraulic components and configured to vary a hydraulic flow in the hydraulic steering unit; and a second hydraulic component configured to vary a hydraulic flow in the hydraulic steering unit. In order to provide an improved hydraulic steering system, the single hydraulic steering unit further comprises second steering control means for controlling a second of the at least two hydraulic components.

A vehicle includes a steering input, a driver monitoring system, a controlled electromechanical actuator, a controller in communication with the steering input and the driver monitoring system, the controller including a memory storing a driver command interpreter module and a vehicle motion control module, and a processor, and wherein the driver command interpreter module and the vehicle motion control module are in communication with the steering input and the driver monitoring system. The driver command interpreter module is configured to estimate an upcoming vehicle maneuver based at least in part on a commanded steering operation from the steering input and a driver viewing direction from the driver monitoring system.

An asphalt finisher is provided and includes a plurality of wheels including a steered wheel; a steering cylinder configured to adjust a steered angle of the steered wheel; a hydraulic pump configured to supply hydraulic oil to the steering cylinder; a proportional control valve disposed between the hydraulic pump and the steering cylinder, and configured to control a flow rate and a direction of the hydraulic oil supplied to the steering cylinder; and a controller configured to control the proportional control valve to control the steered angle.

The invention relates to a motor vehicle assembly (1), preferably a cabin assembly. The motor vehicle assembly (1) comprises a structure (10), preferably a floor structure, with a first steering shaft passage (12) and a second steering shaft passage (14). Furthermore, the motor vehicle assembly comprises a steering shaft (16) which passes through the first steering shaft passage (12), and at least one line (26) which passes through the second steering shaft passage (14).

An asphalt finisher is provided and includes a plurality of wheels including a steered wheel; a steering cylinder configured to adjust a steered angle of the steered wheel; a hydraulic pump configured to supply hydraulic oil to the steering cylinder; a proportional control valve disposed between the hydraulic pump and the steering cylinder, and configured to control a flow rate and a direction of the hydraulic oil supplied to the steering cylinder; and a controller configured to control the proportional control valve to control the steered angle.

The present invention relates to a hydraulic steering system (100) for steering a vehicle with a steering mechanics (112). The hydraulic steering system (100) comprises a hydraulic steering unit (101). A single hydraulic steering unit (101) comprises two outlet ports (111) configured to allow hydraulic fluid to be discharged from the hydraulic steering unit (101) to the steering mechanics (112) of the vehicle, at least two redundant hydraulic components (108, 109) configured to change a hydraulic flow of the hydraulic fluid and to be fluidically connected to the outlet ports (111), a first steering control device (102) for controlling a first hydraulic component (108) of the at least two hydraulic components (108, 109) and configured to change the hydraulic flow in the hydraulic steering unit (101) and a second hydraulic component (109) configured to change the hydraulic flow in the hydraulic steering unit (101). In order to provide an improved hydraulic steering system, the single hydraulic steering unit (101) further comprises a second steering control device (105) for controlling the second hydraulic component (109) of the at least two hydraulic components (108, 109).

The invention relates to a hydraulic steering device having a steering actuator (10), which can be controlled by a steering assembly (12), and having a flow regulation valve arrangement (14), which is also used for controlling the steering actuator (10), which steering device is characterized in that the flow regulation valve arrangement (14) has an outlet valve (V2), which is designed as a continuously adjustable valve (16), and a directional valve (V3), which in the unactuated setting thereof blocks the fluidic connection between the outlet valve (V2) and the steering actuator (10) and in the actuated position thereof controls the steering actuator (10) in the one or the other steering direction.

The steering device 100A of the industrial vehicle of the present application is provided with: an oil pressure pump 31; a steering cylinder 32; a manual steering circuit 40 that supplies hydraulic oil ejected from the oil pressure pump 31 to the steering cylinder 32 through a PS valve 41 that is opened and closed in accordance with operation of a steering wheel 33; an automatic steering circuit 50 that supplies hydraulic oil ejected from the oil pressure pump 31 to the steering cylinder 32 through an electromagnetic proportional valve 51 that is opened and closed in accordance with an arithmetic result of automatic driving control; and a priority valve 60 that is provided between the oil pressure pump 31 and the PS valve 41 and the electromagnetic proportional valve 51, that divides hydraulic oil to the manual steering circuit 40 and the automatic steering circuit 50, and that preferentially supplies hydraulic oil to the manual steering circuit 40 at a design flow rate that is equal to or greater than a prescribed flow rate at which the steering cylinder 32 is operated.

This disclosure provides an asphalt finisher capable of improving the precision of steering angle control. [Solution] The asphalt finisher includes a plurality of wheels, including steering wheels, a steering cylinder 54 that adjusts the steering angle of the steering wheels, and a hydraulic pump 55 that supplies hydraulic fluid to the steering cylinder 54. The asphalt finisher also includes a proportional control valve 56p positioned between the hydraulic pump 55 and the steering cylinder 54, which controls the flow rate and direction of the hydraulic fluid supplied to the steering cylinder 54, and a controller that controls the steering angle by controlling the proportional control valve 56p.

A vehicle including a steering input, a driver monitoring system, a controlled electro-mechanical actuator, a controller in communication with the steering input and the driver monitoring system, the controller including a memory and a processor, the memory storing a driver command interpreter module and a vehicle motion control module, and wherein the driver command interpreter module is configured to estimate an upcoming vehicle maneuver based at least in part on a commanded steering operation from the steering input and a driver viewing direction from the driver monitoring system.

A control valve for a steering system for a hydraulic machine includes a valve body defining a first actuator port, a second actuator port, a tank port, a pump port, and a manual steer interface. A directional control spool is disposed within the valve body to selectively couple the first actuator port, the second actuator port, the tank port, and the pump port. Additionally, an isolator spool is disposed within the valve body to selectively couple the directional control spool to each of the first actuator port, the second actuator port, and the pump port, and to selectively couple the pump port to the manual steer interface.

The present disclosure provides a steering system of an engineering vehicle, and a backhoe loader. The steering system includes: a direction control device, including a steering wheel, a steering cylinder and steerable wheels, the steering cylinder being in transmission connection with the steering wheel and the steerable wheels; a displacement sensor configured to detect a piston displacement of the steering cylinder; a return motor in transmission connection with the steerable wheels to drive the steerable wheels to return to a normal position; and a controller in signal connection with the displacement sensor and the return motor, and configured to output a control signal according to the piston displacement detected by the displacement sensor to manipulate the return motor to drive the steerable wheels to return. The backhoe loader includes the steering system.

An information processing method according to the present embodiment is such that when it is determined that a first operating individual who performs an operation on a first operator and a second operating individual who performs an operation on a second operator are different for a vehicle comprising the first operator and the second operator, a processor controls the steering angle of the vehicle on the basis of the operation on the first operator or the operation on the second operator.