Abstract: A motor assembly including a casing of which at least a part extends along a longitudinal axis of the casing, a stator fixedly mounted in the casing, a rotor movably mounted in rotation in the casing, the rotor including a drive shaft configured to be guided in rotation about an axis of rotation of the drive shaft, a first guide bearing configured to guide in rotation the drive shaft about the axis of rotation of the drive shaft, the motor assembly being characterized in that it includes further a guide bearing support configured to couple with the casing and to support the first guide bearing, the guide bearing support and the casing being further configured such that a coupling of the guide bearing support and of the casing makes it possible to exert an adjustable axial preload on the first guide bearing.

Abstract: A rack guide bearing for meshing a pinion and vehicle steering system rack, the guide bearing including a wall, a first portion is tubular and defines an axis and internal channel around the axis opening at the guide bearing first end, and opening onto a second portion of the wall opposite the first end, an internal channel section transverse to the axis and inserts the rack into the channel according to the rack axis parallel to the guide bearing axis, the guide bearing including an internal channel inner surface of the guide bearing wall's first portion and an inner surface of the guide bearing wall's second portion, the inner surfaces are in slipping contact with a slipping surface of the rack opposite to a toothing of the rack, when the rack is inserted inside the first portion of the wall's internal channel according to the axis of the rack.

Abstract: A method for controlling a steering system of a motor vehicle, including first and second channels in parallel, each including an electric power unit delivering an assist force to the steering system of the vehicle, in order to obtain the sum of two delivered assist forces, corresponding to the total assist force required, the method including: evaluating the channel having the lowest power unit power supply voltage value; defining a master channel function delivering an initial portion of the total assist force requirement and a slave channel function delivering a variable complementary portion of the assist force, corresponding to the difference between the initial portion of force actually delivered and the total force requirement; and pairing the master channel function with the channel having the lowest power unit power supply voltage value, and the slave channel function with the channel having the highest power unit power supply voltage value.

Abstract: A method for magnetic braking of a steering column included in a steering system of a vehicle to facilitate installation and uninstallation of the driver in the vehicle and to protect angular mechanical stops arranged on either side of the steering column, said vehicle including a vehicle engine, said steering system including at least: the steering column connected to a steering wheel, the angular mechanical stops arranged on either side of the steering column, a force feedback module fixed to the steering column, said force feedback module including an electric motor, a reducer and a torque and/or angle sensor, said method including the magnetic braking of the steering column connected to the steering wheel applied by the electric motor of the force feedback module when said electric motor of the force feedback module is not powered.

Abstract: A speed reducer includes: a case, a worm disposed in a housing of the case and including a proximal portion coupled to an input shaft, a worm wheel coupled to an output shaft and arranged so as to be driven in rotation by the worm, a proximal bearing holding the proximal portion of the worm in the housing, a distal bearing holding a distal portion of the worm, the distal bearing being disposed in a cylindrical distal portion of the housing, a spring held fixed in the distal portion of the housing around the distal bearing, the spring including at least one elastic blade disposed and shaped to bear on the case and to exert forces on the distal bearing in a direction towards the worm wheel.

Abstract: Method for controlling a control motor, including an engine and an engine arranged in parallel, implementing: a distribution step determining a distributed torque, and a distributed torque from a target torque; a step adding a compensation request to the first distributed torque so as to determine a target motor torque; a step adding a compensation request to the distributed torque so as to determine a target motor torque; a production step in which the engine exerts a motor torque depending on the target motor torque; a step in which the engine exerts a motor torque depending on the target motor torque; the controlling method also including a permission step, configured to limit, or respectively authorize, the compensation request of a disturbance, or respectively of a failure, of the engine, and/or the compensation request, for a disturbance, or respectively a failure, of the engine.

Abstract: A method for controlling an electric motor (12) comprising at least: one first determination step (E1) in which an intermediate value of a direct axis current (Idstat) and an intermediate value of a quadrature axis current (Iqstat) of the AC supply current of the motor (12) are determined, one second determination step (E2) in which a target value of the direct axis current (Idcible) and a target value of the quadrature axis current (Iqcible) are determined, one driving step (EP) in which the at least one inverter is driven by the microcontroller (20) based on the target value of the direct axis current (Idcible) and the target value of the quadrature axis current (Iqcible).

Abstract: A power steering case, including an opening, a lid configured to close the opening of the case, and an O-ring seal disposed in a first annular groove formed in a first inner wall of the lid or of the case, a second inner wall, respectively of the case or of the lid, having a frustoconical shaped portion for progressively compressing the seal before reaching the closed position of the lid where the seal tends to regain a less deformed initial shape in a second annular groove facing the first annular groove and formed in the second inner wall.

Abstract: A method for determining a friction torque exerted within a steering column of an electric power steering system, the power steering system comprising a steering column provided with a torsion bar undergoing an instantaneous torsion torque, the steering column being linked to a pinion capable of driving a rack, a torsion bar sensor intended to measure the instantaneous torsion torque, the method comprising an acquisition step, during which at least one value of the friction torque is measured by the torsion bar sensor, the acquisition step being carried out following the reception of a trigger signal, the value of the trigger signal depending on values of conditional variables (VL, A, V, C, ?C, ?A).

Abstract: A system for assisting a driver to get in and out of a vehicle, including a steering device with: a steering column having a longitudinal axis about which the steering column may pivot, said column being connected to a steering wheel, and a force feedback module fixed to the steering column, said module including a controller capable of calculating a force and an actuator capable of applying said force to the steering column so as to cause the steering column to pivot about the longitudinal axis to guide the steering column connected to the steering wheel in a predetermined position when a driver is getting in and out, lock the steering column connected to the steering wheel in the position predetermined when a driver is getting in and out. A vehicle includes said system and a method for assisting a driver to get in and out of the vehicle.

Abstract: A method for the gradual activation and deactivation of a steering return function in a vehicle, the vehicle including at least two wheels, a steering wheel, an assist motor applying an assist torque to a steering rack, and a drive motor applying a wheel torque to the wheels, the method including a step of calculating an application gain including a first phase of determining a first gain dependent on the wheel torque of at least one of the two wheels, a step of estimating the assist torque associated with the return function, and a step of multiplying the assist torque associated with the return function and the application gain, wherein during the application gain calculation step the method also includes a second phase of determining a second gain dependent on the angle of the steering wheel and the difference in the rotation speeds of the at least two wheels.

Abstract: A method for determining a gear ratio (VGR) for a power steering system of a vehicle, said power steering system comprising a steering wheel determining a steering wheel angle (Av) and a rack determining a rack position (Xc), said rack position (Xc) varying between a lower limit rack position and an upper limit rack position (Xcsup), the gear ratio (VGR) defining a ratio between the rack position (Xc) and the steering wheel angle (Av), or conversely, characterized in that the method comprises a definition step in which the gear ratio (VGR) is defined as a function of a vehicle speed (V1, V2, V3) and of the steering wheel angle (Av) so that the upper limit rack position (Xcsup) corresponds to a single upper limit steering wheel angle (Avsup).

Abstract: A method for manufacturing a wheel integrated to a support shaft, including: making by overmolding, in a first material, of a wheelrim on the support shaft, the wheelrim having an upper face having a ribbed annular portion in which cells are formed, delimited by reinforcing ribs and having respective bottoms, making by overmolding, in a second material, of a crown on the upper face of the wheelrim, by implementing an injection in at least one injection point positioned opposite the ribbed annular portion, prior to the step of making the crown by overmolding, formation of a material deposit in at least one target cell, selected amongst the cells, so as to form a raised area with respect to bottom thereof, the injection of the second material at the injection point being performed opposite the raised area.

Abstract: An installation intended to enable a conformity check of a mechanical part of a vehicle, including at least one magnetizing device, and at least one device for spraying a revealing product, wherein the installation also includes at least one device for generating at least one image by means of at least one image capture apparatus and at least one device for transmitting the at least one image on an analysis unit.

Abstract: Reducer device having electric power steering, including a support member, an endless screw, a toothed wheel that meshes with a helical spline arranged on the endless screw, the endless screw including a first end capable of being rotated, and a second end receiving a first rotation-guiding means and a second rotation-guiding means, respectively, causing the endless screw to pivot relative to the support member, the second rotation-guiding means including a damping sleeve and a rotation-guiding device, the sleeve surrounding the rotation-guiding device, the second rotation-guiding means including a centering means including a press-fitting part inserted into the rotation-guiding device, and an attachment part rigidly connected to the support member.

Abstract: A method includes a rotation locking step during which the rotation of the threaded hub about the central axis is blocked by heating a portion of the plug to soften, then by forcing the softened thermoplastic material to penetrate into, and then solidify in, a female cavity hollowed in the wall of the orifice to constitute a male member which fits into the female cavity. The female cavity forms, against the action of the male member, a guiding end stop preventing the male member, and therefore the hub, from rotating about the central axis to oppose any rotary screwing/unscrewing of the plug and maintaining a degree of freedom in axial translation along the central axis of the male member within the female cavity, so as not to impede a sliding of the hub and of its screw thread along the central axis against the wall.

Abstract: An ECU controls a motor including a first coil group and a second coil group. The ECU calculates a first torque command value and a second torque command value. The ECU uses a first differential torque, which is the difference between a first theoretical output torque and a first predictive output torque, to correct the second torque command value for the second coil group. The ECU uses a second differential torque, which is the difference between a second theoretical output torque and a second predictive output torque, to correct the first torque command value for the first coil group. The ECU uses a corrected first torque command value to control power feeding to the first coil group and uses a corrected second torque command value to control power feeding to the second coil group.

Abstract: A method for estimating a value for friction exerted on a power steering system of a vehicle, during turning resulting in the crossing of a straight line angle, the turning being achieved at a substantially uniform speed included within a predefined range, and an angle of a steering wheel included within a predefined range, including: a step (1) of acquiring a plurality of vehicle-related data items, including at least one value of a force of a power steering motor on a rack and pinion, and a value of a force of the steering wheel on the rack and pinion; a step (4) of estimating the value for friction by averaging the sum of the forces of the steering wheel and the forces of the power steering motor on the rack and pinion.

Abstract: A method in which a continuous estimation of the intermediate friction rate is carried out, allowing the integration of the method into a general friction compensation method so as to continuously improve the feel on the steering wheel, particularly for speeds below a determined threshold. Also, a method for friction compensation in an electrical power steering system, characterised in that the compensation method takes into account a continuous estimation of the intermediate friction rate obtained by the estimation method.

Abstract: A plug for closing an opening of a casing, the plug including a solid hub, with central axis, as well as a retaining member which ensures the axial attachment of the plug in the opening, the plug including a play-compensating carriage, which is distinct from the hub and which is movably mounted on a guiding support borne by the hub, the guiding support being arranged in such a way as to axially retain the carriage and to guide the relative movement of the carriage with respect to the hub in a direction termed the “play-compensating direction” transverse to the central axis, a spring-type resilient member, arranged between the guiding support and the carriage, and an orientating member arranged so as to orientate the plug, and consequently the play-compensating direction defined by the guiding support, in azimuth around the central axis, according to a predetermined orientation with respect to the casing.