The present document relates to a device and method for controlling a reaction torque of an SBW system, which may include a yaw rate estimator for estimating a yaw rate of a vehicle, a vehicle state determinator for comparing a detection result of a yaw rate detection sensor and a yaw rate estimate which is estimated by the yaw rate estimator to determine whether the vehicle is in an under-steer or over-steer state, and a target torque compensator for compensating for a target torque by using an index which is a determination result of the vehicle state determinator and outputting a final target torque.

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 position detection device configured to detect a position of a shaft made of metal that moves forward and backward in an axial direction within a predetermined range includes an excitation coil that generates an alternating magnetic field, a target that moves integrally with the shaft and in which a magnetic flux of the alternating magnetic field is interlinked, and a detection coil having a detection portion that faces the target while the shaft moves from one axial moving end to the other axial moving end. An induced voltage induced in the detection portion by the magnetic flux of the alternating magnetic field varies with a position of the target relative to the detection portion, and the detection coil has adjustment portions that suppress an effect of an inclination of the shaft with respect to the detection portion on the induced voltage induced in the detection portion.

An embodiment provides a sensing device comprising: a magnet; a collector arranged to correspond to a path along which the magnet moves; and a first sensor disposed in the collector, wherein: the collector comprises a first leg part, a second leg part, and a third leg part; the magnet includes a first pole and a second pole; the first leg part and the second leg part are arranged to be opposite to the first pole; and the third leg part is arranged to be opposite to the second pole.

A method for detecting a malfunction in a hydraulic-assisted steering system for a vehicle includes: measuring a steering torque; determining the steering torque exceeding a threshold torque for a predetermined length of time; and generating a malfunction signal in response to the determining the steering torque exceeding the threshold torque for the predetermined length of time. A system for detecting a malfunction in a hydraulic-assisted steering system for a vehicle includes a torque sensor configured to measure a steering torque, and a controller configured to: determine the steering torque exceeding a threshold torque for a predetermined length of time; and generate a malfunction signal in response to determining the steering torque exceeding the threshold torque for the predetermined length of time.

An apparatus for detecting a steering angle includes a pinion shaft coupled to a rack housing in which a rack bar is installed, the pinion shaft on which a pinion gear meshing with a rack gear is formed; a magnet disposed at one end of the pinion shaft and configured to rotate together with the pinion shaft; a printed circuit board (PCB) disposed at a predetermined distance from the magnet and including a magnetic sensor for detecting a rotation angle of a steering wheel connected to the pinion shaft; and a connector connected to the PCB to transmit a detected value measured by the magnetic sensor to an electronic control unit (ECU).

A steering apparatus includes a steering wheel provided in a vehicle, a feedback motor including a rotation shaft connected to the steering wheel, an angle sensor configured to output an angle signal corresponding to rotation displacement of the steering wheel, a rack bar connected to a rotation shaft of the wheel provided in the vehicle, a steering motor including a rotation shaft connected to the rack bar, a position sensor configured to output a position signal corresponding to linear displacement of the rack bar assembly, and a processor configured to control the steering motor to linearly move the rack bar based on the angle signal, identify a rack force applied to the rack bar based on the position signal, and control the feedback motor to apply a feedback torque corresponding to the rack force applied to the rack bar to the steering wheel.

A position detection device configured to detect a position of a moving member that moves back and forth in a predetermined moving direction is provided with an exciting coil arranged to extend in the moving direction along the moving member, and a detection coil that, by an action of a magnetic field generated by the exciting coil, can detect a position, in the moving direction, of a detection object portion provided on the moving member within a predetermined detection range. A plurality of the detection coils are arranged side by side in a direction perpendicular to an extending direction of the exciting coil. A plurality of the detection object portions are provided at different positions in the moving direction so as to respectively correspond to the plurality of the detection coils, and the respective detection ranges of the plurality of the detection coils are offset in the moving direction of the moving member.

The disclosure relates to a method for steering a vehicle via a rear axle steering system that includes an actuator having a steering linkage at least indirectly operable by a threaded drive and longitudinally displaceable within a chassis-fixed housing. The actuator includes a rotor position sensor for detecting a rotor position of a rotor of an electric motor designed for actuating the threaded drive and a linear sensor for detecting an axial position of a target arranged on the steering linkage. The two sensors are connected to a control and analysis unit configured to carry out a comparison between the rotor position and the axial position of the target when there is a defined zero point of an axial position of the steering linkage relative to the housing and, in consideration of a thermal expansion of at least the steering linkage, operating the actuator to adjust the steering angle.

A position detection device for detecting the position of a rack shaft that steers the steering wheel of a vehicle by moving in the axial direction, includes a cylindrical rack housing that houses the rack shaft, a detector that detects the position of the rack shaft relative to the rack housing, a support member that supports the detector relative to the rack housing, and a seal member attached to the support member, wherein the rack housing has a through-hole that penetrates between the inner and outer circumference surfaces along the radial direction of the rack shaft. The support member has a support portion that is positioned in the through-hole to support the detector and a fixing portion that is fixed to the rack housing, and the seal member is in elastic contact with the outer surface of the support portion and the inner surface of the through-hole.