An electric power steering assembly for a steering column includes a lower assist shaft defining a first bore. The assembly also includes a needle bearing at least partially disposed within the first bore. The assembly further includes an upper assist shaft assembly defining a second bore and having a journal surface at an end thereof. The assembly yet further includes a torsion bar having a first end disposed in the first bore and a second end disposed in the second bore, the torsion bar having a torsion bar run-out that forces the journal surface to remain in contact with an inner surface of the needle bearing.

An electric power steering assembly for a steering column includes a lower assist shaft defining a first bore. The assembly also includes a needle bearing at least partially disposed within the first bore. The assembly further includes an upper assist shaft assembly defining a second bore and having a journal surface at an end thereof. The assembly yet further includes a torsion bar having a first end disposed in the first bore and a second end disposed in the second bore, the torsion bar having a torsion bar run-out that forces the journal surface to remain in contact with an inner surface of the needle bearing.

A steering assembly including an electric motor, and a motor shaft coupled to and extending from the electric motor to an end. The motor shaft is rotatable about a motor shaft axis by the motor. The steering assembly further includes a friction pad at the end of the motor shaft, where the friction pad has a coefficient of friction configured to resist rotation of the motor shaft.

A configurable diagnostic data monitor that captures diagnostic data of a motor control system is provided. Triggers, and records generated using the triggers, are configurable using, for example, different parameters or logical operators. Triggers buffer data that can be made part of a record when a trigger condition is met. Memory used by a trigger and memory usage for records is monitored and notifications generated indicating memory required for a trigger. Configuration of a trigger can involve customized priority relative to other triggers, adjustable data parameters, a persistence parameter, and configurable saved data capture for rate and duration.

A bearing arrangement may be used to mount a worm shaft meshing with a worm wheel in a housing of an electromechanical power steering system. The bearing arrangement comprises a first rotary bearing, a second rotary bearing, and a pivoting ring. The first rotary bearing is configured to permit a pivoting movement of the worm shaft. The pivoting ring comprises a first pivoting ring component and a second pivoting ring component and is configured to act resiliently between the second rotary bearing and the housing. The second rotary bearing is at least partially arranged between the first pivoting ring component and the second pivoting ring component. The first pivoting ring component has two first points, with respect to which the first pivoting ring component is configured resiliently. The second pivoting ring component has two second points, with respect to which the second pivoting ring component is configured resiliently.

To provide an AC rotary machine apparatus which can determine the operation stop of the control circuit of the other system with good accuracy. An AC rotary machine apparatus, including: a resolver is provided with a first system excitation winding, first system two output windings, a second system excitation winding, and second system two output windings, in which a magnetic interference occurs between a first system and a second system; a first system control circuit that applies AC voltage with a first period to the first system excitation winding; and a second system control circuit that applies AC voltage with a second period to the second system excitation winding, wherein the first system control circuit determines whether the operation of the second system control circuit stops, based on the components of the second period extracted from the first system output signals.

A power transmission device including a housing and a ball screw device including a nut, a screw shaft, and a plurality of balls. The device includes a pulley device including a driving pulley configured to be driven by receiving power transmitted from a power source, a driven pulley fixed to the nut, and a belt wound around outer peripheral surfaces of the driving pulley and the driven pulley. The device also includes a first bearing and a second bearing disposed between the housing and the nut in a center axis direction parallel with a center axis of the nut; and a preload applying member configured to apply preloads to the first bearing and the second bearing. The first bearing and the second bearing are respectively disposed on both sides of the driven pulley to be a face-to-face combination, and each of the first bearing and the second bearing includes an outer ring engaged with the housing.

The application relates to a lateral motion control method and system for a vehicle, an automatic driving controller, a steering system, a vehicle, and a storage medium, wherein the lateral motion control method for the vehicle comprises: generating and outputting a steering control command according to a desired track of the vehicle, such that the vehicle moves along an actual track according to the steering control command; determining a vehicle running state, wherein the vehicle running state is generated according to an error value between the desired track and the actual track; and determining whether to stop/limit outputting of the steering control command or not according to the vehicle running state. The lateral motion of the vehicle can be controlled according to the method.

A steering assist device may comprise an Ath power path controller positioned on an Ath power path connecting an Ath leg of an inverter with an Ath phase of a steering motor, a Bth power path controller positioned on a Bth power path connecting a Bth leg of the inverter with a Bth phase of the steering motor, a Cth power path controller positioned on a Cth power path connecting a Cth leg of the inverter with a Cth phase of the steering motor, and a controller unit determining a state of at least one of the Ath power path controller to the Cth power path controller based on at least one of an Ath phase voltage to a Cth phase voltage respectively formed at the Ath leg to the Cth leg of the inverter and controlling the steering motor according to a result of the determination.

The present disclosure relates to a method for determining a steering return moment requirement of a steering device of a vehicle, to a steering system, to a computer program product, and to a computer-readable storage medium. The steering device is part of a steering system of the vehicle, and is coupled to at least one actuator. The actuator is configured to apply a steering moment to the steering device. The method comprises at least the step of determining the steering return moment requirement based on at least one rack force of the steering system. The steering return moment requirement forms at least a portion of a target steering moment which can be applied to the steering device by the at least one actuator.