The present embodiments relate to an inductor device, a filter device and a steering assist device. The inductor device can comprise: a core including a magnetic material; and a wire which is wound around the core and which includes a low resistance material.

A position detection device includes a first positional sensor mounted on a reference portion, and a second positional sensor mounted on a detection target that is movable relative to the reference portion. A controller calculates a position of the detection target based on a detection value of the first positional sensor and a detection value of the second positional sensor. The position detection device may be applied to a steer-by-wire system for a vehicle. The reference portion may be a fixed portion of the vehicle, and the detection target may be a steering wheel or a vehicle wheel of the vehicle. The controller may calculate a steering angle of the steering wheel or a turning angle of the vehicle wheel as the position of the detection target.

A vehicle control system for a steer-by-wire vehicle executes: driving assist control that assists driving of the vehicle; and conjunction reaction force control that applies a steering reaction force component to a steering wheel in conjunction with vehicle turning caused by the driving assist control. A driver turn angle is a target turn angle corresponding to a steering angle of the steering wheel, and a first system turn angle is a target turn angle required by the driving assist control. In the conjunction reaction force control, a second system turn angle is acquired by adjusting the first system turn angle according to a driver's steering intention such that the difference between the system turn angle and the driver turn angle becomes smaller. Then, a steering reaction force component is applied in a direction of reducing a difference between the driver turn angle and the second system turn angle.

A vehicle control system controls a vehicle of a steer-by-wire type. The vehicle control system is configured to execute: driving assist control that assists driving of the vehicle; and conjunction reaction force control that applies a steering reaction force component to a steering wheel in conjunction with turning of the vehicle caused by the driving assist control. A driving assist direction is a direction of the turning of the vehicle caused by the driving assist control. The conjunction reaction force control includes feedforward reaction force control that moves the steering wheel in a same direction as the driving assist direction without depending on a steering angle of the steering wheel.

A rear wheel steering control system and method for vehicles may gradually perform rear wheel steering at a gentle ramp-up slope, compared to a conventional rear wheel steering control system and method, for a predetermined time period when the ignition of a vehicle is turned on in the state in which a front wheel steering angle is generated, to prevent rear wheels from being rapidly steered and to eliminate a sense of difference felt by a driver due to rapid rear wheel steering.

In an exemplary embodiment, a test system is provided for testing a power steering system for a vehicle, the test system including a motor, one or more sensors, and a processor. The one or more sensors are configured to obtain sensor data pertaining to the motor. The processor is coupled to the one or more sensors and to the motor, and is configured to: determine, using the sensor data, a desired position of the motor for providing a desired amount of torque to the power steering system in order to reach one or more target behaviors: an inertia target, a spring target, a damper target, or a friction target for the power steering system; and provide instructions for the motor to move to the desired position for providing torque to the power steering system.

A steering wheel-based HMI system for a vehicle includes a steer-by-wire system and a control module. The steer-by-wire system includes a steering wheel and a torque feedback unit mechanically connected to the steering wheel. The control module is communicatively connected to the torque feedback unit. The control module is configured to identify a communication, gather information about user securement of the steering wheel, and operate the torque feedback unit to apply a supplementary torque to the steering wheel for haptically issuing the communication through the steering wheel. The supplementary torque has a magnitude that is scaled based on the information about user securement of the steering wheel.

A power steering device includes a bearing rotatably supporting the tip side of a worm shaft, a gear case provided with the housing hole for housing the worm shaft and a holder housing the bearing. The holder includes a first holder holding the bearing, a second holder having the guide part configured to guide a movement of the second bearing toward a worm wheel, and a spring provided in a compressed state between the first holder and the second holder and configured to bias the first holder toward the worm wheel. The second holder includes a holder opening part configured to allow the bearing and the first holder to pass through thereof in the guiding direction of the guide part to guide the bearing, and the first holder faces an inner peripheral surface of the housing hole through the holder opening part.

A non-transitory computer-readable medium storing instructions, the instructions, when executed by a processor, cause the processor to: perform a follow-up steering control for changing a steering angle of a vehicle in such a manner that the vehicle travels along a target traveling line determined based on a preceding vehicle trajectory, which is a travel trajectory of a preceding vehicle traveling ahead of the vehicle; and when a first distance condition and a manual steering condition are both satisfied while the follow-up steering control is being performed, stop the follow-up steering control, the first distance condition being a condition satisfied when a deviation distance in a road-width direction between the preceding vehicle trajectory and the vehicle is equal to or longer than a predetermined first threshold, and the manual steering condition being a condition satisfied when a driver operates a steering wheel to change a position in the road-width direction.

A signal control device includes a charge/discharge circuit, a sampling capacitor, and an AC conversion circuit. The charge/discharge circuit is capable of charging or discharging the sampling capacitor. The AC conversion circuit performs an AD conversion by converting an analog voltage value charged in the sampling capacitor into an AD conversion value that is a digital value. After a charge operation or a discharge operation to the sampling capacitor with the charge/discharge circuit, the AD conversion circuit performs the AD conversion, and a malfunction of the charge/discharge circuit is determined based on a diagnosis result of the AD conversion value.