Abstract: The disclosure relates to an actuator having a planetary roller screw drive comprising a housing having a cylinder chamber and a fluid reservoir forming one common volume and the housing is filled with a hydraulic fluid. The planetary roller screw drive comprises a spindle having a profiling, which meshes with a plurality of planetary rollers, which are arranged around the spindle and are supported at both ends in a planetary roller carrier. The planetary rollers mesh with an inner profiling of an internal ring gear surrounding the planetary rollers and the planetary rollers are supported in a sleeve surrounding the internal ring gear. According to the disclosure, the planetary roller carrier and/or the sleeve comprise one or more flow ducts connecting the interior and the exterior of a chamber defined radially by the sleeve and axially by the planetary roller carriers to one another.

Abstract: An actuator with a planetary screw drive (PSD), in particular to operate a clutch of a vehicle, wherein a centric spindle having a pitch is connected non-rotatingly to a rotor of a drive and is drivable by the drive around an axis of rotation, and a plurality of planetary rollers are engaged with the spindle and mesh with a ring gear encircling the planetary rollers which has grooves in the circumferential direction, wherein both ends of the planetary rollers are positioned in a planetary roller carrier. The planetary roller carriers are supported non-rotatingly on both ends in such a way that a fixed assignment of the pitch of the spindle to an axial travel of a component that is movable axially by the PSD, which is operatively connected to an axially actuatable piston, is realized.

Abstract: An actuator having a planetary screw drive (PSD), in particular for the operation of a clutch of a motor vehicle, wherein a plurality of planetary rollers which mesh with a ring gear that encircles the planetary rollers are in contact with a spindle, where the planetary rollers are positioned at both ends in a planetary roller carrier and the planet carriers are supported non-rotatingly in a sleeve that encircles the ring gear and points radially inward at both ends, wherein the sleeve and the planetary carriers supported in it are axially fixed and connected non-rotatingly to a rotor of a drive and are drivable around an axis of rotation, the spindle is supported non-rotatingly and the spindle performs an axial stroke when the rotor and the planetary carriers supported in the sleeve rotate, is provided.

Abstract: Embodiments of the present invention relate to a component group with a friction device with at least two components that are rotatable relative to one another, in particular for actuating a clutch of a vehicle, wherein a coil spring influencing the degree of efficiency, the friction is disposed between the components that are rotatable relative to one another and wherein the component group with a friction device is integrated in a transmission or an actuator, or both.

Abstract: The disclosure relates to an actuator having a planetary roller screw drive comprising a housing having a cylinder chamber and a fluid reservoir forming one common volume and the housing is filled with a hydraulic fluid. The planetary roller screw drive comprises a spindle having a profiling, which meshes with a plurality of planetary rollers, which are arranged around the spindle and are supported at both ends in a planetary roller carrier. The planetary rollers mesh with an inner profiling of an internal ring gear surrounding the planetary rollers and the planetary rollers are supported in a sleeve surrounding the internal ring gear. According to the disclosure, the planetary roller carrier and/or the sleeve comprise one or more flow ducts connecting the interior and the exterior of a chamber defined radially by the sleeve and axially by the planetary roller carriers to one another.

Abstract: A spindle drive unit, in particular for an actuator having a planetary screw drive (PWG) for actuating a clutch of a motor vehicle by an actuating element is provided, where the drive unit has an e-motor with a rotor and a stator and where a spindle provided with a pitch is connected non-rotatingly to the rotor and is drivable by the rotor around an axis of rotation. The spindle is designed as a threaded rod and a rotor carrier that holds the rotor is screwed onto the threaded rod, and the rotor carrier is rotationally secured and axially fixed on the spindle by a lock nut.

Abstract: Embodiments of the present invention provide a memristor having a first electrode, a second electrode and a memristive layer arranged between the first electrode and the second electrode. Thereby, the memristor is adapted to obtain an asymmetrical current density distribution in the memristive layer.

Abstract: A modular concept is proposed for an actuator, in particular a clutch and/or transmission actuator. An electric motor is provided with a universal flange. Through this flange it is possible to connect an electrohydraulic or electromechanical actuating link. A clutch and/or a transmission setting device can then be actuated by means of the resulting actuator. In particular, for use for an electrohydraulic actuator, the motor housing may also have a receptacle for a pressure sensor. This receptacle may already be closed, or may be closed for the connection to a mechanics module.

Abstract: An actuator having a planetary screw drive (PSD), in particular for the operation of a clutch of a motor vehicle, wherein a plurality of planetary rollers which mesh with a ring gear that encircles the planetary rollers are in contact with a spindle, where the planetary rollers are positioned at both ends in a planetary roller carrier and the planet carriers are supported non-rotatingly in a sleeve that encircles the ring gear and points radially inward at both ends, wherein the sleeve and the planetary carriers supported in it are axially fixed and connected non-rotatingly to a rotor of a drive and are drivable around an axis of rotation, the spindle is supported non-rotatingly and the spindle performs an axial stroke when the rotor and the planetary carriers supported in the sleeve rotate, is provided.

Abstract: An actuator with a planetary screw drive (PSD), in particular to operate a clutch of a vehicle, wherein a centric spindle having a pitch is connected non-rotatingly to a rotor of a drive and is drivable by the drive around an axis of rotation, and a plurality of planetary rollers are engaged with the spindle and mesh with a ring gear encircling the planetary rollers which has grooves in the circumferential direction, wherein both ends of the planetary rollers are positioned in a planetary roller carrier. The planetary roller carriers are supported non-rotatingly on both ends in such a way that a fixed assignment of the pitch of the spindle to an axial travel of a component that is movable axially by the PSD, which is operatively connected to an axially actuatable piston, is realized.

Abstract: A spindle drive unit, in particular for an actuator having a planetary screw drive (PWG) for actuating a clutch of a motor vehicle by an actuating element is provided, where the drive unit has an e-motor with a rotor and a stator and where a spindle provided with a pitch is connected non-rotatingly to the rotor and is drivable by the rotor around an axis of rotation. The spindle is designed as a threaded rod and a rotor carrier that holds the rotor is screwed onto the threaded rod, and the rotor carrier is rotationally secured and axially fixed on the spindle by a lock nut.

Abstract: An actuation device especially for actuating a transmission for selecting a gear step and engaging and disengaging the selected gear step and/or for actuating at least one clutch. The actuation device includes at least one rotatable roll element that has guide tracks, into each of which a contact element of a selector fork engages to move the selector fork in order to select and engage or disengage a gear step of a transmission, and an actuation region for a clutch actuation means for actuating the at least one clutch.

Abstract: An actuator for actuating a transmission to select a transmission ratio and to engage or disengage the selected transmission ratio and/or for actuating at least one clutch, with a cylindrical control element on which a first ring element for controlling the clutch, a second ring element as a drive element, a third ring element for shift control, and a fourth ring element for shift operation are disposed for rotation, wherein the first ring element is connected to a clutch for actuating the clutch upon a rotation of the first ring element, the second ring element is connected to a drive for rotating the second ring element, the third ring element is provided with actuating means interacting with corresponding actuating means of the first, second, and fourth ring element, and wherein the fourth ring element is connected to shifting elements of a transmission for shifting a transmission ratio.

Abstract: Embodiments of the present invention relate to a component group with a friction device with at least two components that are rotatable relative to one another, in particular for actuating a clutch of a vehicle, wherein a coil spring influencing the degree of efficiency, the friction is disposed between the components that are rotatable relative to one another and wherein the component group with a friction device is integrated in a transmission or an actuator, or both.

Abstract: Embodiments of the present invention provide a memristor having a first electrode, a second electrode and a memristive layer arranged between the first electrode and the second electrode. Thereby, the memristor is adapted to obtain an asymmetrical current density distribution in the memristive layer.

Abstract: An actuation device especially for actuating a transmission for selecting a gear step and engaging and disengaging the selected gear step and/or for actuating at least one clutch. The actuation device includes at least one rotatable roll element that has guide tracks, into each of which a contact element of a selector fork engages to move the selector fork in order to select and engage or disengage a gear step of a transmission, and an actuation region for a clutch actuation means for actuating the at least one clutch.

Abstract: A cockpit component for a motor vehicle includes a basic body and an inflatable airbag cushion, and has an airbag cover for protecting vehicle occupants against injuries during traffic accidents. On an end side of an interior structure, facing the vehicle occupant, the airbag cover bears directly against the basic body and engages around at least one edge of that end side.

Abstract: A method, system and computer program product for automatically creating animated 3-D scenarios from human position and path data are provided. The method and system may include immersive and non-immersive virtual reality technologies for the training and mental conditioning of trainees such as football players with a focus on visual perception skills. The method and system may include a unique combination of commercially available hardware, specially developed software, data sets, and data libraries, as well as commercially available software packages.