In a steer by wire and idle stop vehicle, the idle stop is terminated if the steering wheel (11) is turned by more than a prescribed threshold value. For the purpose of preventing consumption of power by a steering actuator and preventing an unexpected steering action upon termination of the idle stop, the engine restart threshold value (th) is varied depending on the direction of the change of the steering angle from the start of the idle stop operation. In particular, if the change () of the steering angle is in the direction to increase the steering angle from the value (s) at the start of the idle stop operation, the engine restart threshold value is raised. If the change of the steering angle is in the direction to decrease the steering angle from the value at the start of the idle stop operation, the engine restart threshold value is lowered.

In an example embodiment, a vehicle guidance system includes a memory including computer-readable instructions stored therein and a processor. The processor is configured to execute the computer-readable instructions to estimate a wheel angle of a vehicle based on at least a first value, the first value being a hand wheel based estimate of the wheel angle, and adjust steering commands for steering the vehicle based on the estimated wheel angle to permit the vehicle to move along a set path.

A failure detection device for a steering angle sensor according to an embodiment comprises: a steering angle sensor including a main gear that rotates together with a steering wheel, a first sub-gear and a second sub-gear that are each engaged with the main gear and have a constant gear ratio with the main gear, a first Hall IC chip for detecting the angle of the first sub-gear, and a second Hall IC chip for detecting the angle of the second sub-gear; and a control unit that determines failure of the steering angle sensor on the basis of a first angle difference between the current angle and a previous angle of the first sub-gear as detected by the first Hall IC chip, and a second angle difference between the current angle and a previous angle of the second sub-gear as detected by the second Hall IC chip.

An autonomous-driving hydraulic steering modification control system disclosed by this application includes a steering wheel, a hydraulic steering mechanism and a turning wheel, the hydraulic steering mechanism is connected with the steering wheel and the turning wheel respectively, the steering wheel is connected with the hydraulic steering mechanism through a first rotating shaft and a second rotating shaft, one end of the first rotating shaft is connected with the steering wheel, the other end of the first rotating shaft is connected with one end of the second rotating shaft through a steering connector, the other end of the second rotating shaft is connected with the hydraulic steering mechanism, and a steering motor is arranged on the second rotating shaft and is configured to drive the hydraulic steering mechanism to rotate so as to make the turning wheel rotate.

A sensing device includes: an encoder rotating with a rotation shaft and having an external surface with an alternating structure made of magnetic material; at least one magnet facing the external surface and arranged to be fixed outside the encoder; and at least one sensing element arranged to be fixed between the at least one magnet and the encoder and output an alternating signal from the alternating structure as the encoder rotates, wherein the sensing element is a sensing element sensitive to a magnetic field.

A vehicle steering device includes: a target-steered-angle setting unit configured to set a left target steered angle that is a target value of the steered angle of a left steered wheel and a right target steered angle that is a target value of the steered angle of a right steered wheel; left motor controllers configured to control a left steering motor based on a left-steered-angle deviation that is a difference between the left steered angle and the left target steered angle; right motor controllers configured to control a right steering motor based on a right-steered-angle deviation that is a difference between the right steered angle and the right target steered angle; and an abnormality determination unit configured to determine that an abnormality has occurred when an absolute value of difference between the left-steered-angle deviation and the right-steered-angle deviation is equal to or larger than a first threshold.

A steering device for a motor vehicle, in particular a steer-by-wire steering device, comprises a steering wheel, which is able to act on a steering sensor for measuring the rotation angle position of the steering wheel, an electromechanical actuator, which is able to act on a rack for steering wheels, and an electronic controller, which is adapted to detect the steering wheel angle position and to control the electromechanical actuator, wherein the steering device further comprises a feedback actuator acting on the steering wheel, wherein the controller is adapted to measure natural oscillations of the motor vehicle and to apply them with a corresponding amplitude to the feedback actuator.

A power steering controller including: a first override determination part that determines whether automatic steering of a vehicle is possible on the basis of a state of the vehicle; a second override determination part that determines whether manual steering of the vehicle is possible on the basis of a state of a driver of the vehicle; and a driving mode switching part that switches between an automatic steering mode for automatically steering the vehicle, a manual steering mode for manually steering the vehicle, and a semi-automatic steering mode for automatically steering and manually steering the vehicle, on the basis of a determination result of the first override determination part and a determination result of the second override determination part.

A steering column assembly includes a steering wheel having a steering wheel rim, a steering wheel hub, and a rim extension segment. The steering column assembly also includes a motor operatively coupled to the rim extension segment. The steering column assembly further includes a jacket assembly operatively coupled to the steering wheel, wherein the jacket assembly defines a central passage extending in a longitudinal direction of the steering column assembly, wherein the central passage does not include a steering shaft therein.

An inductive sensor system may comprise an upper rotor comprising an upper target having a first metallic pattern; a lower rotor comprising a lower target having a second metallic pattern; and a stationary circuit board positioned between the upper rotor and the lower rotor. The circuit board comprises one or more transmitter coil sets configured to generate electromagnetic field, and one or more receiver coil sets for sensing relative angular displacement movement between the upper rotor and the lower rotor. The one or more transmitter coil sets and the one or more receiver coil sets are circularly wound.