1322results about "Mechanical steering" patented technology

A system including a computer having a processor and a memory. The memory includes instructions executable by the processor to, upon actuating movement of a steering element of a vehicle, measure a torque applied to the steering element in a direction opposite the actuated movement. In response to a determination that the torque is less than a predetermined threshold, the processor actuates a component of the vehicle.

A system for collaborative steering in steer-by-wire (SBW) vehicles includes sensors, a rack motor altering a position of the vehicle's steerable road wheels and an emulator altering a torque and position of a vehicle hand wheel. A collaborative steering system application (CSSA) obtains, static and dynamic information about the vehicle and the vehicle's environment, and generates a rack torque and / or angle command to the rack motor and an emulator torque and / or angle command to the emulator. The CSSA adjusts between ADAS and manual steering ratios and automatically transitions control between ADAS SBW control and manual control. The CSSA smooths transitions between ADAS SBW control and manual steering control and adjusts hand wheel stiffness by altering the emulator torque command, and causes the rack motor and emulator to operate according to a kinematic model while adapting road wheel response and vehicle operator steering feel based on scenarios and features currently enabled.

A steering apparatus includes a first CAN communication line provided between a steering input mechanism and a steering mechanism controller and configured to output a first steering operation amount signal output from a first steering operation amount signal output portion to the steering mechanism controller, and a communication line provided between the steering input mechanism and the steering mechanism controller and configured to output a second steering operation amount signal to the steering mechanism controller without intervention of a first microprocessor.

A steer by wire includes a steering wheel holding system. An emulator controller receives vehicle data from vehicle systems and determines whether a vehicle is in one of a driving mode and a non-driving mode. When the vehicle is in the driving mode, the emulator controller transmits a command to an emulator switching system to electrically couple the phases of an emulator motor to a power source to enable the emulator motor to implement steer by wire operations placing the steering wheel in an un-hold mode. When the vehicle is in the non-driving mode, the emulator controller transmits a command to the emulator switching system to electrically couple the phases of the emulator motor to ground to short the phases of the emulator motor to ground to generate a resistive torque to resist rotational movement of a steering wheel of the vehicle placing the steering wheel in a hold mode.

A steering system includes: an operation device including an operation member and a reaction force application device; a turning device mechanically cut off from the operation device and configured to turn a wheel according to a control current; and a controller configured to control the turning device and the reaction force application device based on an operation signal relating to an action of the operation member. The steering system is configured to switch between a normal mode of turning the wheel based on the operation signal and a virtual mode of steering a virtual mobile body based on the operation signal. In the virtual mode, the controller sets the control current to a current value at which the wheel does not turn regardless of the operation signal, and sets the operation reaction force based on a predetermined oscillation component of a signal received from the turning device.

A dual motor drive assembly comprising a housing, a shaft rotatably mounted with respect to the housing, a first gear connected to and configured to rotate with the shaft, first and second motors, each having an output driving a respective output gear, the output gears being engaged with the first gear, an allocation arrangement for allocating torque demands to each of the first and second motors, a target friction detection arrangement for determining a target friction, a calculation arrangement for calculating a mechanical friction, wherein the target friction and mechanical friction are compared, and wherein the mechanical friction is modified to meet the target friction by varying the difference between the two motor torque demands when the two motor torques are in opposing directions.

Disclosed examples include setting a coupling resistance between a road wheel actuator and a steerable road wheel of a vehicle at a first time by controlling an electrical damping device to increase an electrical resistance of an electric motor of the road wheel actuator; and changing the coupling resistance between the road wheel actuator and the steerable road wheel at a second time by controlling the electrical damping device to further increase the electrical resistance of the electric motor of the road wheel actuator.

The present invention relates to a method for operating an electromechanical steering system (1) of a motor vehicle (2). According to the method, a communication fault between a first control device (7) and a second control device (9) is first detected, and the first control device (7) applies a predefined excitation pattern to an electric motor (3), which is then detected by the second control device (9). In this way, communication between the first control device (7) and the second control device (9) is ensured even in the event of a communication link (6) failure. The invention further relates to an electromechanical steering system (1) for a motor vehicle (2) and a motor vehicle (2).

A method includes determining a current slew rate associated with a motor of the steering column, determining a speed slew rate associated with the motor, determining a current and speed slew rate threshold for the motor, and determining whether the current slew rate or the speed slew rate indicates a pinch event based on a comparison of the current slew rate, the speed slew rate, and the current and speed slew rate threshold. The method also includes, in response to a determination that at least one of the current slew rate and the speed slew rate indicates a pinch event, selectively instructing the motor to one of stop operation and reverse operation for a calibration period and, in response to the pinch event having a magnitude that is less than a pinch event threshold, selectively instructing the motor to continue operation.

A steering input device for controlling a vehicle according to the steer-by-wire concept. A power train has a moveable steering unit and a drive device with a drive motor for generating a torque acting on the steering unit. The power train also has a controllable magnetorheological coupling device with two coupling components that can be rotated relative to one another. The coupling device is connected in series with the drive device in the power train. A torque can be transmitted between the drive device and the steering unit by the coupling device and can be changed in a targeted manner.

A steer-by-wire control system adapted for use with a material handling vehicle such as a forklift includes a controller programmed to receive input indicative of a desired direction of travel of the material handling vehicle and to control an actuator coupled with the steered wheels of the material handling vehicle to change the direction of travel of the vehicle and synchronize the direction of travel with a position of a steering wheel of the material handling vehicle.

A control system for a four-wheel independent steering system includes at least one sensor configured to detect at least one of a shift position of a joystick, mounted on the four-wheel independent steering system, or a driving speed of a vehicle, and a position controller configured to control a position of the joystick based on sensing data detected by the at least one sensor.

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.

A steer-by-wire system for a vehicle includes a rack moveable in an axial direction and defining a groove extending in the axial direction of the rack. The system also includes a housing surrounding at least a portion of the rack. The system further includes an anti-rotation device disposed proximate an outer surface of the rack at the mounting location of the rack and within the housing, the anti-rotation device comprising a bearing seated within the groove of the rack. The system yet further includes a delash bearing assembly in contact with the rack to radially bias the rack to a desired position.

The present embodiments may provide a steer-by-wire steering apparatus which enables a driver to use a function for controlling an automobile, such as automatic parking, lane keeping, driving assistance according to a road surface condition, steering-vibration damping, or autonomous driving control, to improve the driver's convenience, and allows removal of hydraulic pressure-related components to prevent consumption of engine power by the components and thus can satisfy the high power and rigidity required for a steering device of a commercial vehicle.

The present disclosure relates to a steering system for a vehicle, comprising a steering wheel arrangement having a central axis and being reversibly retractable in a direction towards a dashboard of the vehicle and extendable in a direction away from the dashboard of the vehicle. The steering wheel arrangement includes a steering wheel having a steering wheel rim and at least one spoke, a steering wheel hub fixedly connected with the steering wheel by the at least one spoke and extending from the steering wheel towards the dashboard of the vehicle, the steering wheel hub and the steering wheel being rotatable about a central axis (A). The steering wheel rim has a non-planar configuration and has a total angle of rotation of 720° or less.

A steer-by-wire steering system mounted on a vehicle, including: an operation member operable by a driver; a steering actuator having a drive source and configured to steer a wheel by a force of the drive source; a controller configured to control the steering actuator so as to cause the wheel to be steered in accordance with an operation of the operation member, wherein, when a stored neutral position, which is a neutral steering position stored for controlling the steering actuator, deviates from an actual neutral position, which is an actual neutral steering position, the controller executes, in a state in which the operation of the operation member to cause the vehicle to travel straight by the driver of the vehicle is maintained, a neutral position deviation elimination process in which the stored neutral position is brought closer to the actual neutral position.

The invention relates to a corner limiting mechanism, a steering system and a vehicle, the corner limiting mechanism comprises a shell, a connecting cylinder and a limiting assembly, a mounting cavity is formed in the shell, the connecting cylinder is arranged in the mounting cavity and can rotate relative to the mounting cavity, a connecting part is arranged on the outer wall of the connecting cylinder, and the limiting assembly comprises a fixing part and a rotating part; the fixing part is fixedly installed in the installation cavity and provided with a fixing part, the rotating part is rotatably arranged outside the connecting cylinder in a sleeving mode, the connecting cylinder is provided with a left limit position and a right limit position, and when the connecting cylinder is located between the left limit position and the right limit position, the connecting cylinder can drive the rotating part to rotate relative to the installation cavity. At any one of the left limit position and the right limit position, the connecting part abuts against the rotating part in the circumferential direction of the connecting cylinder, and the rotating part abuts against the fixing part in the circumferential direction of the connecting cylinder so as to limit the connecting cylinder to rotate relative to the mounting cavity. The corner limiting mechanism is simple in structure, and the production cost of the corner limiting mechanism can be reduced.

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.

The invention relates to a control method and device of a steer-by-wire system, electronic equipment and a storage medium. The control method of the steer-by-wire system comprises the steps that basic feedback torque and road feeling feedback torque are determined according to driving control state data of a vehicle and steering related data of the steer-by-wire system; determining output proportion coefficients corresponding to the basic feedback torque and the road feeling feedback torque according to the driving control state data; and based on the basic feedback torque, the road feeling feedback torque, and the output ratio coefficients corresponding to the basic feedback torque and the road feeling feedback torque, determining a target feedback torque of the up-rotating motor. According to the embodiment of the invention, different output proportion coefficients can be distributed according to the driving control state data as the basic feedback torque and the road feeling feedback torque, and the target feedback torque of the upward-rotating motor is obtained through superposition output, so that a driver can obtain a good steering hand feeling similar to that of a traditional EPS, the vehicle can be flexibly controlled to steer, and the steering efficiency is improved. The change of an actual road surface can be sensed, the risk is pre-judged in advance, and the driving safety is improved.

The invention discloses a steer-by-wire system, an endpoint limiting device of a road feeling simulator of the steer-by-wire system, a control method and a vehicle, and belongs to the technical field of steer-by-wire, the steer-by-wire system comprises a fixing frame of a hollow structure, and a first through hole and a second through hole are formed in the top surface and the bottom surface of the fixing frame respectively; the limiting nut is arranged in the fixing frame, a threaded hole of the limiting nut is opposite to the first through hole and the second through hole, and a vertical limiting groove penetrating through the top face and the bottom face of the limiting nut is formed in the peripheral face of the limiting nut; the limiting column is located in the limiting groove, the two ends of the limiting column are fixedly connected with the fixing frame, and the limiting nut is slidably connected with the limiting column; the two limiting blocks are symmetrically arranged on the two sides of the limiting nut respectively, the side faces, close to the limiting nut, of the limiting blocks are in a concave isosceles trapezoid shape, the two opposite ends of the limiting nut are located between the upper inclined face parts and the lower inclined face parts of the two limiting blocks respectively, and the limiting blocks are slidably connected with the fixing frame; the driving assembly is used for driving the limiting block to move. The limiting effect is improved, and the cost is reduced.

A steering reaction force control device, a steering reaction force control method, and a steering reaction force control system according to the present invention determine an amount of torque of a steering reaction force imparted by the reaction force actuator and a direction of torque for returning the steering operation input member to a neutral position from a physical quantity related to a vehicle speed of the vehicle and a physical quantity related to the operation information of the steering operation input member, and output a control signal based on the amount of torque and the direction of torque to the reaction force actuator. As a result, it is possible to prevent the hunting of the operating position of the steering operation input member when the steering operation input member is retained in a given steering position.

Steering wheel unit (1) for an electromechanical steering system of a motor vehicle (10), comprising: - a force generating means for applying a mechanical feedback force to a steering wheel (4) about a current steering and / or driving condition to the driver, characterized in that the force generating means comprises two steering shaft nuts (21a, 21b) arranged axially adjustably on an external threaded section of a steering wheel shaft (3), two flanges (22a, 22b), a first and a second elastic element (23a, 23b), wherein each of the steering shaft nuts (21a, 21b) engages with one of the flanges (22a, 22b), wherein the flanges (22a, 22b) are arranged axially adjustable around a first flange shaft (24a) and a second flange shaft (24b), and wherein the first elastic element (23a) is arranged on the first flange shaft (24a) and the second elastic element (23b) is arranged on the second flange shaft (24b), and the elastic elements (23a, 23b) are deformable by axial movement of the flanges (22a, 22b), and wherein the force generating means applies force to the steering wheel shaft (3) in such a way that with increasing adjustment of the steering wheel (4) deviating from straight-ahead travel, an increasing restoring force can be generated on the steering wheel (4) for feedback of a wheel angle-related steering state to the driver.

A vehicle steer-by-wire system includes two front wheels of the vehicle, a steering wheel adapted to receive a steering input, and a steer-by-wire module configured to electronically transmit a steering signal to control a steering orientation of the two front wheels according to the steering input received at the steering wheel, sense a feedback parameter of the two front wheels, and supply a steering feedback signal to the steering wheel according to the sensed feedback parameter of the two front wheels. The system includes one or more vehicle sensors configured to sense at least one operating parameter of the vehicle, and a steering feedback control module configured to receive the at least one operating parameter of the vehicle, determine a driving intensity index according to the at least one operating parameter, and modify the steering feedback signal supplied to the steering wheel according to the determined driving intensity index.

A means of transport, a steer-by-wire steering system (10), and a method for establishing a geometric zero position of a steering wheel (7) with an imbalance in a steer-by-wire steering system (10) are proposed. The method comprises the following steps: automatically rotating the steering wheel (7) by a motor through a first angular range (a) in a first direction, automatically determining a first force acting on the steering wheel (7) during rotation through the first angular range (a), automatically determining a first relationship between the first force acting over the first angular range (a), and automatically establishing the geometric zero position depending on the first relationship.

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.

Provided is a steering control apparatus of a Steer by Wire (SbW) system including a Steer wheel Feedback Actuator (SFA) and a Road Wheel Actuator (RWA), the steering control apparatus including: a receiver configured to receive a first angle value from a first sensor provided on a pinion of the RWA, and a second angle value from a second sensor provided on a motor of the RWA; and a controller configured to estimate rack force based on the second angle value, and monitoring compliance of the RWA by using the first angle value and the second angle value based on the rack force.

A steering feedback unit detects a steering torque generated according to an operation of a steering wheel, a road-wheel steering unit connected to the steering feedback unit to allow a steering of a wheel to be performed according to a steering angle or the steering torque transmitted from the steering feedback unit, and a control unit determines the steering torque detected in the steering feedback unit as a steering angle selectively according to a preset standard vehicle speed and standard steering speed to transmit the determined steering angle to the road-wheel steering unit, and controls the steering of the wheel according to the steering angle to be performed, or transmits the steering torque detected in the steering feedback unit to the road-wheel steering unit and control the amount of motor torque for the steering of the wheel to be determined.

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.