539results about "Mechanical steering" patented technology

A steering assembly comprises: a steering rack configured to be linearly movable; a nut rotatably coupled to the steering rack, wherein the steering rack linearly moves in association with rotation of the nut; a bearing configured to support the rotation of the nut, the bearing comprising an outer race having a flanged part protruding from an outer surface of the outer race of the bearing; and a rack housing accommodating at least a portion of the steering rack, the nut, and the bearing, and having a groove recessed from an inner surface of the rack housing. The flanged part protruding from the outer surface of the outer race of the bearing is disposed in the groove recessed from the inner surface of the rack housing.

A steer-by-wire system is provided. The steer-by-wire system includes: a first powerpack having a first motor a first controller configured to determine a first mechanical fault of the first powerpack; a second powerpack having a second motor, and a second controller configured to determine a second mechanical fault of the second powerpack; and a steering rack operably coupled to the first motor of the first powerpack and the second motor of the second powerpack, the steering rack being configured to be linearly movable in response to rotation of at least one of the first motor and the second motor.

A vehicle control system for a vehicle with steer-by-wire steering may include a road wheel actuator operably coupled to a road wheel of the vehicle to position the road wheel based to a road wheel angle based on a target angle, a feedback actuator operably coupled to a steering wheel of the vehicle to generate the target angle based on a steering wheel angle and to generate feedback to an operator of the vehicle, a sensor network comprising sensors to detect the steering wheel angle and the road wheel angle, a display disposed in the vehicle to be visible to the operator of the vehicle during vehicle operation, and a controller for determining when a misalignment exists between the road wheel angle and the steering wheel angle and providing a visual indication of the misalignment on the display.

A number of illustrative variations may include a system and method of modifying steering wheel effort and end of travel limits dynamically during electronic power steering failure, steer-by-wire failure, or brake-to-steer implementation within a vehicle where steering systems have degraded or failed to provide a driver with a normal or near-normal steering driving experience while brake-to-steer systems are in use.

The invention discloses a drive-by-wire hydraulic steering system and method based on linear active disturbance rejection, and belongs to the technical field of automobile steering, the steering system comprises a hydraulic control unit and a control module, the hydraulic control unit is used for controlling the movement direction and the movement speed of a steering oil cylinder by controlling the flowing direction and the flowing speed of hydraulic oil; and the control module is used for calculating the received input turning angle and the actual turning angle according to a linear active-disturbance-rejection steering angle control algorithm, controlling the steering of a steering control valve in the hydraulic control unit, and indirectly controlling the steering angle and the motion trail of the vehicle through the steering of the steering control valve. By means of the steering system and method, the problems of non-linear interference such as uncertainty of tire aligning torque influence factors and electromagnetic coupling of a steering execution motor can be effectively solved, high-precision steering angle tracking control is achieved, the steering precision and the response speed of a vehicle are remarkably improved, and the maneuverability and the sense of safety of a driver are improved.

The invention relates to a controller for a vehicle, comprising a control device (22), by means of which at least one target variable relating to a target operation of at least one motorized actuator (20) of the vehicle can be determined with respect to a requested function of the vehicle, and at least one sensor (32), by means of which at least one physical variable can be measured on and / or in at least one component of the at least one motorized actuator (20) of the vehicle, the controller comprising at least one sensor line (34), via which the at least one sensor (32) is electrically connected to the control device (22), and the control device (22) additionally being designed and / or programmed such that the at least one target variable can be determined by means of the control device (22) while taking into consideration the at least one physical variable output by the at least one sensor (32) via the at least one sensor line (34).

The present disclosure relates generally to a steer-by-wire system for a vehicle, and more particularly to a method and apparatus for cooperative control of a steer-by-wire system. An example steering-by-wire system (SBW steering system) for a vehicle includes machine-readable instructions and a control device to execute the machine-readable instructions to: determine a steering wheel angle of a steering wheel; causing the steering wheel actuator to apply a first feedback torque to the steering wheel based on the steering wheel angle and the target steering wheel angle; causing the steering wheel actuator to apply a second feedback torque to the steering wheel based on the steering wheel angle, the target steering wheel angle, and the user applied torque based on the user applied torque greater than the first feedback torque; and causing a road wheel actuator to steer the vehicle based on the steering wheel angle.

A steer-by-wire system may comprise: first and second motor assemblies having one common shaft; a single package having an inside space accommodating the first and second motor assemblies; a steering rack configured to be linearly movable in response to rotation of the one common shaft of the first and second motor assemblies; and a rotary-to-linear conversion mechanism operably connected between the one common shaft of the first and second motor assemblies and the steering rack and configured to convert a rotary motion of the one common shaft of the first and second motor assemblies into a linear motion for linearly moving the steering rack. A seal may be positioned between the first motor assembly and the second motor assembly in the inside space of the single package.

A method to control a steering system or a sub-system of a road vehicle including a controller to operate in a normal mode with full steering functionality and no quality problems and at least two degraded operation modes with degraded operation of the steering system, the controller including an evaluator including an allocation between degradation levels of the steering system or the sub-system and operation modes, and the method includes determining an overall degradation level for the steering system or the sub-system by collecting single individual degradation levels of the steering system or the sub-system in the evaluator and determining an overall degradation level as a level with a highest degradation of the single individual degradation levels which in a corresponding operation mode provides enough performance of the steering system for an expected maximum power request.

The steer-by-wire system may include: a first power pack including a first motor; a second power pack including a second motor; and a steering rack operably coupled to the first motor of the first power pack and the second motor of the second power pack, the steering rack configured to be linearly movable in response to rotation of at least one of the first motor and the second motor, a rotation ratio associated with the first motor and a rotation ratio associated with the second motor are different from each other. The steer-by-wire system may confirm the linear position of the steering rack using a cursor algorithm based on the position of the first motor and the position of the second motor.

The present disclosure relates to a steering system comprising a steering wheel mechanically attached to a steering wheel hub by fixing elements; a steering system support column, wherein the steering wheel hub is rotatably mounted on the steering system support column, so that the steering wheel and the steering wheel hub are rotatable); a torque feedback device including an electric machine having an outer rotor and an inner stator with stator windings, the outer rotor being attached to the steering wheel hub so as to be rotatable with the steering wheel hub, and the stator being non-rotatably fixed to the steering system support column; wherein, with respect to the axis of rotation, the fixing elements are arranged at different radial positions than the stator windings.

Provided according to the present embodiments are a steering input device and a mobility apparatus including same, the device comprising: a steering shaft; a rotor which is coupled to the steering shaft and has a spring having, between both ends thereof, a separation space formed in the circumferential direction; a first support member which is coupled to the rotor andpositioned in the separation space; a housing to which the steering shaft is rotatably coupled and which accommodates the rotortherein; a second support member which is positioned in the separation space; and coupling members which couple the second support member to the housing.

An electromechanical steering system comprises a first actuator having a first electric motor and a first control unit, and a second actuator having a second electric motor and a second control unit, wherein the first electric motor can be operated in a motor mode or a generator mode depending on the driving situation, wherein the first actuator and the second actuator are communicatively connected to one another, and the second control unit is designed, in a generator mode of the first electric motor, to actuate the second electric motor in such a way that a current that is generated in a generator mode of the first electric motor is converted energetically by the second electric motor, in particular by influencing a Id current for the second electric motor specified by vector control. A method for operating such a steering system in a motor vehicle comprises generating a current in a generator mode of the first electric motor and energetically converting the generated current by the second electric motor.

The disclosure relates to a method for influencing a movement of a steering control element of a steer-by-wire steering system in a vehicle, in particular a motor vehicle, in which method the steer-by-wire steering system comprises at least one feedback actuator for producing a steering resistance and / or a restoring torque acting on the steering control element. In at least one operating state in which the vehicle is stationary and is in a passive operating mode which is different from a normal driving operating mode, as a response to an external force acting on the steering control element, the steering resistance and / or the restoring torque of the feedback actuator are / is set and / or changed by means of a simulation function in such a way that a behavior of the steering control element which correlates with a bore torque and / or self-aligning torque is simulated.

The invention relates to a system (100) for changing a direction of travel of a vehicle (1), in particular a towing or utility vehicle, said system comprising at least one primary actuator unit (110) and one secondary actuator unit (120) for initiating and / or carrying out at least one change in the direction of travel of the vehicle, wherein the primary actuator unit (110) and the secondary actuator unit (120) have different designs. The invention also relates to a vehicle (1) and to a control system.

A steering control device configured to control a steering device, the steering device including a steering shaft (12) to which a handle (11) is detachably coupled and a motor configured to generate torque that is given to the steering shaft (12). The steering control device includes a processing circuit configured to execute a process for controlling driving of the motor. The process for controlling the driving of the motor includes a lock process of driving the motor such that a rotation position of the steering shaft (12) is fixed at a specific position, in a state where the handle (11) has been detached from the steering shaft (12).

A steering system (100) for steer-by-wire that holds an operating member (200) movably between a first position that is a position of the operating member (200) at which the operating member is able to be operated by a driver, and a second position that is further forward in the vehicle than the first position, the steering system (100) including a fixed member (110) that is attached to a vehicle body, a movable member (120) that supports the operating member (200) and that is attached to the fixed member (110) so as to be movable in a front-rear direction of the vehicle, a drive device (130) that moves the movable member (120) in the front-rear direction relative to the fixed member (110) and fixes the operating member (200) at the first position and the second position, and an impact absorbing mechanism (140) that is connected between the movable member (120) and the drive device (130) in a manner interposed therebetween, and that, in a case in which a first load L1 is applied to the movable member (120) from forward toward rearward in the vehicle, is deformed by the first load L1 and also allows the movable member (120) to move rearward in the vehicle.

A cover for a worm wheel gear box for a steering system and an electric power steering system for a vehicle. The cover comprises a substantially disc or dome shaped cover body configured to cover an opening of the worm wheel gear box. The cover body includes an inner surface configured to face the worm wheel gear box and an opposite outer surface. The cover body includes a sealing portion formed on the inner surface and configured to sealingly engage an outer circumference of the opening of the worm wheel gear box. The cover body includes a first attachment means and a second attachment means for mounting the cover body to the worm wheel gear box. The first attachment means and the second attachment means are provided at substantially diametrically opposed positions of the cover body. The cover body includes a reinforcement structure reinforcing the cover body.

A steering apparatus includes a steering wheel provided in a vehicle, a steering sensor configured to output first and second detection signals corresponding to a rotational displacement of the steering wheel, and a controller configured to identify occurrence of an error in the steering sensor caused by an external magnetic field based on the first and second detection signals, in which the controller identifies the occurrence of the error by comparing a change amount of at least one of the first and second detection signals within a reference time with a reference change amount in response to vehicle start-on and comparing a change rate of at least one of the first and second detection signals within the reference time with a reference change rate of at least one of the first and second detection signals within the reference time.

An apparatus of a vehicle may comprise a steering angle sensor configured to output a sensing signal associated with an angle of a steering wheel of the vehicle, a first processor configured to determine, based on the sensing signal and at least two different logics, respective first steering wheel angles of the vehicle, and based on the respective first steering wheel angles of the vehicle being consistent with each other, output a first signal indicating a first steering wheel angle of the vehicle, and a control circuit configured to control, based on the first signal, operation of the vehicle.

A steering column assembly (10) for a vehicle comprises a steering column (14) with a steering wheel (18) at one end and a gear (24) connected to the opposite end. A motor (28), controlled by control means (C1), has an output shaft (32) which is also displaceable along its rotational axis through a predetermined range and carries a worm screw (40) directly engaged with the gear (24). Biasing means (62) are configured to resist axial displacement of the output shaft (32) in both axial directions. The rotational and axial positions of the motor output shaft (32) can be determined by a target member (70) fixedly mounted to the motor output shaft (32) and a sensor (84) for detecting the target member.

A method for monitoring a steering system (50) of a vehicle by a monitoring system (100) is disclosed. The steering system (50) is configured to set steering angles (52) based on provided control signals, the monitoring system (100) being independent from the steering system (50). The method includes receiving (S110), by the monitoring system (100), a set steering angle (52) and an actual steering angle (54); determining (S120), by the monitoring system (100), a faulty deviation between the actual steering angle (54) and the set steering angle (52) indicating an error effect; and mitigating (S130), by the monitoring system (100), the faulty deviation by measures suitable to weaken the error effect.

A steer-by-wire assembly includes a motor assembly with at least one motor mounted in a housing, and a screw actuator configured to engage with a threaded portion of a steering shaft and move the steering shaft along a longitudinal axis. It also includes a rotor carrier sleeve operatively coupled between the at least one motor and the screw actuator, configured to rotate about the longitudinal axis, and a sensor assembly comprising a sensor portion and a target portion configured to detect relative movement of the steering shaft with respect to the housing. One of the sensor portion and the target portion are mounted in a sensor housing fixed with respect to the steering shaft. The housing comprises a sensor channel for receiving the sensor housing and constrain the movement of the sensor housing and the steering shaft in a direction parallel to the longitudinal axis.

A steering feedback actuator includes: a housing; a cover disposed to face the housing; the motor is arranged in the shell; a sun gear connected to the motor; a ring gear arranged to surround the sun gear; a planetary gear disposed between the sun gear and the ring gear; a carrier connected to the planetary gear and rotating with rotation of the planetary gear; and a fixing member disposed between the cover and the ring gear and configured to fix the cover to the ring gear. According to an embodiment of the present disclosure, since the speed reduction member and the motor are disposed in spaces separated from each other in the housing, interference between the motor and the speed reduction member can be prevented, and damage to the motor caused by lubricating oil or foreign matter can be prevented.

The invention relates to a steering system for controlling a vehicle, using a steer-by-wire concept, comprising a control element, a steering shaft (3), an electric motor (6) and a continuously adjustable magnetorheological powder brake (5) influencing the rotation of the steering shaft (3), which comprises two components rotatable relative to each other about an axis of rotation, a stator (8) with associated coil (14) and, spaced apart therefrom, a rotor (9) connected to the steering shaft (3), wherein at least one rotating shear gap (16) at least partially filled with a magnetorheological medium is provided between the rotor (9) and the stator (8), and the rotor (9) is rotatably mounted via at least one powder brake bearing (10) positioned separately from the steering shaft (3) and connected to the stator (8), and the steering shaft (3) is connected to the rotor (9) via an elastic coupling element (13).

When a DC power source fails, the following controls are performed. The normal control is resumed when an inverter input voltage recovers before a standby period elapses after a power failure time. A power source relay is turned off when the standby period elapses without recovery of the voltage. The power source relay is turned on again when a power source relay off period has elapsed from a turn-off time. The normal control is resumed when the inverter input voltage recovers at the turn-on time. The normal control is resumed when the inverter input voltage recovers before the power source relay on period elapses from the turn-on time. The power source relay is turned off, and driving of the actuator is stopped, when the power source relay on period passes without recovery of the voltage.

The disclosure generally relates to a method (60) for operating a steer-by-wire steering system (14) for a motor vehicle (10) according to a calibration mode, an assembly (12), and a motor vehicle (10). The steer-by-wire steering system (14) comprises at least a steering wheel (24), a steering wheel actuator (32) coupled to the steering wheel (24), a steering wheel sensor (36) coupled to the steering wheel (24), and a control device (42) coupled to the steering wheel actuator (32) and the steering wheel sensor (36). The steering wheel actuator (32) is actuated by the control device (42) with a control signal such that, or a steering wheel rotation of the steering wheel (24) is utilized, the steering wheel (24) is rotated by the steering wheel actuator (32) at a predetermined constant speed. The steering wheel sensor (36) detects the rotation angle of the steering wheel (24) during the rotation of the steering wheel (24) at the specified constant rotational speed.The motor torque of an electric motor (34) of the steering wheel actuator (32) is estimated or determined by the control device (42) during the rotation of the steering wheel (24) at the specified constant speed, depending on the detected angle of rotation.

A steer-by-wire system comprises: a first drive unit, comprising a first motor with a first motor shaft and a first gear configured to be rotated by a rotation of the first motor shaft; a second drive unit, comprising a second motor with a second motor shaft and a second gear configured to be rotated by a rotation of the second motor shaft; and a rack operationally coupled to the first motor of the first drive unit and the second motor of the second drive unit, the rack being configured to be linearly movable in response to a rotation of at least one of the first motor and the second motor.A processor is configured to identify a linear position of the rack based on a position of the first gear of the first drive unit and a position of the second gear of the second drive unit using a Vernier algorithm.

The disclosure generally relates to a method for operating a steer-by-wire steering system (12) for a motor vehicle (10) and a steer-by-wire steering system (12). The steer-by-wire steering system (12) comprises at least one road wheel actuator (16) and a control device (14) coupled to at least one road wheel actuator (16). A steering input is received by the control device (14). A regular angle input for a road wheel angle of steerable vehicle wheels (20) of the motor vehicle (10) coupled to the road wheel actuator (16) is determined by the control device (14) based on the steering input. An adapted angle input profile for the road wheel angle is determined by the control device (14) by superimposing the regular angle input with a superimposed angle profile. A control signal based on the adapted angle input profile is transmitted by the control device (14) to the road wheel actuator (16).The control signal is such that the road wheel actuator (16) adjusts the road wheel angle of the steerable vehicle wheels (20) based on the adapted angle profile. At least one operating parameter influenced by the road wheel actuator (16) is detected by at least one sensor (26) of the steer-by-wire steering system (12) during the adjustment of the road wheel angle of the steerable vehicle wheels (20). An updated friction value of the road wheel actuator (16) is estimated by the control device (14) based on the detected operating parameter. The current friction value of the road wheel actuator (16) is adjusted by the control device (14) based on the estimated updated friction value.

Disclosed are a steering control device, a steering control method, and a steering support system including same. Particularly, a steering control device according to the disclosure comprises: a command value calculator for calculating, on the basis of steering information corresponding to the rotation of a steering wheel, a rack movement command value that commands the movement of a rack; a difference value calculator for calculating the difference value between the rack movement command value and the rack movement sensing value by receiving a rack movement sensing value corresponding to the movement of the rack when the movement of the rack is sensed; and a reaction torque calculator for calculating reaction torque on the basis of the difference value and one or more preset virtual linkage parameters.