Patents Assigned to Friedrichshafen AG
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Publication number: 20240051602Abstract: A trajectory planning system for a vehicle includes a sensor system for measuring an actual curvature on the basis of a respective current yaw rate, a memory containing a target trajectory with target curvatures, wherein the trajectory planning system determines target yaw rates from the target curvature, and a steering system that uses steering variables to obtain target curvatures in actual curvatures. The system determines a respective first actual derivative of the measured respective current actual yaw rate over time and a respective first target derivative of the respective current target yaw rate over time. A correlator determines a respective current delay on the basis of the respective first actual derivatives and the respective first target derivatives in a current yaw rate segment, and a parameter estimator recursively estimates the delay between the target yaw rate and the actual yaw rate on the basis of respective current delay inputs.Type: ApplicationFiled: August 10, 2023Publication date: February 15, 2024Applicant: ZF Friedrichshafen AGInventors: Michael Fleps-Dezasse, Julian King, Stephan Pollmeyer, Lothar Kiltz, Felix Mesmer
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Patent number: 11897562Abstract: A method for controlling a steering system of a vehicle during an autonomous steering development mode may include performing, by one or more computing devices, high-authority autonomous steering control of a steering system of the vehicle. The method may further include receiving, by the one or more computing devices, an input from at least one sensor of the steering system indicative of manual operation of the steering system by an operator of the vehicle. Additionally, the method may include transitioning, by the one or more computing devices, from the high-authority autonomous steering control to a low-authority autonomous steering control of the steering system for a predetermined time period in response to receiving the input from the at least one sensor.Type: GrantFiled: May 5, 2021Date of Patent: February 13, 2024Assignee: ZF FRIEDRICHSHAFEN AGInventors: Ananda Pandy, Pranav Salunke, Daniel Williams
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Patent number: 11899119Abstract: A method for processing GPS route data of a vehicle is proposed, in which the GPS route data are used for the route guidance of the vehicle along a route (1), wherein vehicle positions and an offroad position information or an onroad position information are generated as route data, wherein a vehicle position calculation function for route guidance of the vehicle is used, if erroneous vehicle positions are generated from the GPS route data. Furthermore, a control device for carrying out a method is proposed.Type: GrantFiled: October 2, 2020Date of Patent: February 13, 2024Assignee: ZF Friedrichshafen AGInventors: Rachid Mansour, Robert Gronner, Thomas Ascher, Freddy Josef Frombach, Maik Würthner
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Patent number: 11897520Abstract: A method for transferring control of a vehicle from automated vehicle control by a control unit to manual vehicle control by a driver by a control lever, wherein the control lever is used at least to accelerate, brake, and steer the vehicle, wherein there is also at least one first display screen for displaying driving information, including at least an actual speed and an actual trajectory of the vehicle and a speed and a trajectory based on the actual position of the control lever, and wherein automated vehicle control is transferred to manual vehicle control when the actual speed of the vehicle corresponds graphically to the speed based on the actual position of the control lever and the actual trajectory of the vehicle corresponds graphically to the trajectory based on the actual position of the control lever on the first display screen.Type: GrantFiled: August 12, 2019Date of Patent: February 13, 2024Assignees: ZF Friedrichshafen AG, Faurecia Innenraum Systeme GmbHInventors: Steffen Jung, Andreas Kramme, Maximilian Haverkamp, Jan Bavendiek, Lutz Eckstein, Alexander Tenbrock, Gert-Dieter Tuzar, Markus Uhlig, Thomas Sulzbach
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Patent number: 11898598Abstract: A joint has a housing with journal openings, an inner joint portion with a bearing area, which is fitted into the housing and extends axially out of the housing through the openings. A bearing body is arranged in and firmly connected to the housing which encloses the bearing body and comprises plastic. The inner joint portion is fitted and able to move within the body. Sealing bellows surround the inner joint portion and extend from a bearing-body-side bellows contact area, provided on the body or the housing, to an inner-joint-portion-side bellows contact area, provided on the inner joint portion. A sleeve is provided, on at least one of the bellows contact areas, that surrounds the inner joint portion and extends axially. The sleeve surrounds the bellows or is surrounded by the bellows, and has, at an axial end, a radial limb against which the bellows is axially supported.Type: GrantFiled: July 10, 2019Date of Patent: February 13, 2024Assignee: ZF Friedrichshafen AGInventors: Friederike Person, Michael Hahn, Linda Tönsing
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Publication number: 20240048141Abstract: A method for activating a circuit arrangement for power semiconductors of an inverter with at least one phase, having at least two power semiconductors, which are connected in parallel with one another, wherein the power semiconductors are divided into two groups, of which at least one first group has a separate driver, and wherein the activation of the power semiconductors takes place in such a manner that during the switch-on operation, initially the first group and subsequently the second group is switched on.Type: ApplicationFiled: August 4, 2023Publication date: February 8, 2024Applicant: ZF Friedrichshafen AGInventor: Fabian Hohmann
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Publication number: 20240048071Abstract: A method for operating at least one switching device of a power converter includes actuating a first switching element of the switching device by a first pulse-width modulation signal when the current flux in the switching device lies below a predefined threshold value, or actuating a second switching element of the switching device by a second pulse-width modulation signal when a current flux in the switching device exceeds the predefined threshold value. At least one parameter of the first pulse-width modulation signal and/or of the second pulse-width modulation signal is adjusted according to the time point of achievement of the predefined threshold value.Type: ApplicationFiled: August 4, 2023Publication date: February 8, 2024Applicant: ZF Friedrichshafen AGInventor: Fabian Hohmann
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Publication number: 20240047320Abstract: A power electronics module, having a DBC PCB having power semiconductors arranged thereon, and a multilayered leadframe including at least two separate subframes. No power or control routing takes place on the PCB. A region of the load source subregion is arranged between the PCB and the gate source and kelvin source subregion and is in electrical contact with the power semiconductors, and an adjoining region is located outside the PCB. A region of the drain source subregion is in electrical contact with a drain terminal on the PCB, and an adjoining region is located outside the PCB. The gate source subregion and the kelvin source subregion have a region above the load source subregion at which said subregions are in electrical contact with the power semiconductors and have an adjoining region outside the PCB which is opposite the drain source subregion and has pins bent above the PCB.Type: ApplicationFiled: August 1, 2023Publication date: February 8, 2024Applicant: ZF Friedrichshafen AGInventors: Ake Ewald, Stefan Hain, Fabian Hohmann
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Publication number: 20240042910Abstract: A motor vehicle comprising at least one seating device, in particular a driver's seat, a control device for controlling at least one function of the motor vehicle and an operating device having at least one operator control device for operating the control device on the part of the user, wherein the at least one operator control device is supported on a bearing or mounting device which is designed to change the position of the operator control device as a function of a seat position.Type: ApplicationFiled: September 9, 2020Publication date: February 8, 2024Applicant: ZF Friedrichshafen AGInventors: Lenard PETRZIK, Ludger RAKE
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Publication number: 20240048140Abstract: A method for driving a topological semiconductor switch for a power electronics system, wherein the topological semiconductor switch is split into at least two groups of power semiconductors that are driven temporally separately from one another at a preset switching frequency in such a way that in each case only one of the power semiconductors takes on the total current, wherein the method includes determining of a next switching point, including conducting a pointwise interpolation of the discretized phase current in such a way that the change in the current between two conducting phases is measured and extrapolated, and then, together with the switching frequency, the current rise and the current error are predicted for the next two switching operations, and from this the next switching point with the smallest absolute current deviation is determined.Type: ApplicationFiled: August 4, 2023Publication date: February 8, 2024Applicant: ZF Friedrichshafen AGInventor: Fabian Hohmann
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Publication number: 20240049417Abstract: An inverter includes a heat sink having a cooling plate, and at least one phase, wherein each phase includes a half-bridge arranged on an upper side of the cooling plate and DC and AC busbars stacked on the half-bridge and electrically insulated from one another, wherein taps of the DC and AC busbars are provided on mutually opposite sides of the power electronics module. A first conduction element including a thermally conductive material is arranged on the side of the DC busbars and between the DC busbars and the cooling plate and is conductively connected to the DC busbar closer to the cooling plate, and/or a second conduction element comprising a thermally conductive material arranged on the side of the AC busbar and between the AC busbar and the cooling plate and is conductively connected to the AC busbar and the cooling plate.Type: ApplicationFiled: August 4, 2023Publication date: February 8, 2024Applicant: ZF Friedrichshafen AGInventor: Ake Ewald
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Publication number: 20240047120Abstract: A symmetrical DC-to-DC boost converter includes two magnetically coupled chokes, of which one choke is connected to a negative DC voltage input in the DC-to-DC boost converter, while the other choke is connected to a positive DC voltage input in the DC-to-DC boost converter, such that a symmetrical topology is obtained with separate DC voltage inputs, wherein the coupled chokes have three cores in a series, each of which is connected at the top and bottom to a connecting core, and there is at least one winding on each of the two outer cores that is dedicated to one of the chokes, while the middle core does not have a winding, and has at least one air gap and/or is at least partially made of a low permeability powdered material, and therefore forms a magnetic energy storage.Type: ApplicationFiled: August 3, 2023Publication date: February 8, 2024Applicant: ZF Friedrichshafen AGInventors: Manuel Raimann, Pengshuai Wang
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Patent number: 11892066Abstract: A transmission may include an input shaft, a first output shaft, a second output shaft, a first planetary gearset, and a second planetary gearset connected to the first planetary gearset. Optionally, the input shaft is connected to a first element of the first planetary gearset for conjoint rotation, the first output shaft is connected to a second element of the first planetary gearset for conjoint rotation, and the second output shaft is connected to a third element of the second planetary gearset for conjoint rotation. A third element of the first planetary gearset may be connected to a first element of the second planetary gearset via a shaft for conjoint rotation, and a second element of the second planetary gearset may be fixed in place on a non-rotating component.Type: GrantFiled: October 22, 2020Date of Patent: February 6, 2024Assignee: ZF FRIEDRICHSHAFEN AGInventors: Matthias Reisch, Stefan Beck
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Patent number: 11892075Abstract: Disclosed is a method for determining a position of a motor vehicle by means of a location device of the motor vehicle. First, a first position (x1) related to an installation point of the location device in the motor vehicle is determined. In order to determine a position suitable for controlling the motor vehicle, with reference to the said first position (x1) a second position (x2) related to a center of gravity of the vehicle is determined, in that the first position (x1) is offset by a distance (a) between the said installation point of the location device and the center of gravity of the vehicle.Type: GrantFiled: November 23, 2020Date of Patent: February 6, 2024Assignee: ZF Friedrichshafen AGInventors: Rachid Mansour, Thomas Ascher, Freddy Josef Frombach, Maik Würthner, Robert Gronner
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Publication number: 20240035519Abstract: Torsional damper (34), with an input element (E), an output element (A), an elastic element (16), and a friction device (36). The input element (E) and the output element (A) are rotatable to a limited extent with respect to one another against a restoring force of the elastic element (16). The friction device (36) has a friction disk (24), a holding element (28) and a preloading element (26), wherein the holding element (28) is connected to the friction disk (24) for conjoint rotation therewith. The holding element (28) is connected to the output element (A) for conjoint rotation therewith. The holding element (28) is arranged axially between the friction disk (24) and the preloading element (26). A clutch disk having a torsional damper as described above is also disclosed.Type: ApplicationFiled: July 28, 2023Publication date: February 1, 2024Applicant: ZF Friedrichshafen AGInventors: Andreas ECK, Luc Jonckheere, Dominik Bühl, Philipp Günster, Edmont Hofmann, Benedikt Kolb, Andreas Kubisch, Tim Schindler, Fabian Liebst, Andreas Krönert, Michael Bullinger, Andreas Gidt
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Publication number: 20240038639Abstract: A power electronics module, having a continuous DBC PCB having power semiconductors arranged on connecting regions of an uppermost layer of said DBC PCB and a lead frame arranged above the power semiconductors for three-dimensional power and control routing, wherein the lead frame has a drain-source connection, which can be brought into electrical contact with a drain-source contact of the PCB, and a load-source connection which is opposite the drain-source connection via the power semiconductors and which is formed from a plurality of subregions, each of which can be brought into electrical contact with one of the power semiconductors, and at least one gate-source terminal and at least one kelvin-source terminal, and a carrier element including an electrically insulating material on which conductor tracks are provided, wherein the carrier element is routed between the power semiconductors in a region between the load-source connection and the drain-source connection.Type: ApplicationFiled: August 1, 2023Publication date: February 1, 2024Applicant: ZF Friedrichshafen AGInventor: Ake Ewald
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Publication number: 20240035929Abstract: A tire test stand includes a frame, a tire holder on which a tire can be mounted, a hexapod arrangement with six linear drive elements, and a rolling surface unit with a rolling surface. In a starting configuration, the linear drive elements are arranged so that at least one of the linear drive elements is arranged such that, when the at least one linear drive element exerts a force on the tire, the greatest force component of this force is oriented in the direction of a lateral force component. At least one linear drive element is arranged such that the greatest force component is oriented in the direction of a tangential force component. At least one linear drive element is arranged such that the greatest force component is oriented in the direction of a radial force component.Type: ApplicationFiled: December 2, 2021Publication date: February 1, 2024Applicant: ZF Friedrichshafen AGInventor: Thomas Dwolinski
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Publication number: 20240038638Abstract: A power electronics module, having a PCB having power semiconductors arranged on connecting regions of an uppermost layer of said PCB, wherein the PCB has a preset dimension to arrange a preset maximum number of power semiconductors thereon. A lead frame arranged above the power semiconductors provides three-dimensional power and control routing, and includes a drain-source connection to connect to a drain-source contact of the PCB, and a load-source connection opposite the drain-source connection via the power semiconductors that is formed from a plurality of subregions, each of which can be brought into electrical contact with the power semiconductors, and a gate- and kelvin-source terminal, which are arranged above the load-source connection and have been brought into electrical contact with the power semiconductors. At least one dummy chip consisting of an electrically nonconductive material is arranged on each of the connecting regions that are not populated by power semiconductors.Type: ApplicationFiled: August 1, 2023Publication date: February 1, 2024Applicant: ZF Friedrichshafen AGInventors: Ake Ewald, Stefan Hain
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Patent number: 11885401Abstract: A dual clutch transmission (1) includes a breather assembly (7) with a breather element (9). The breather element (9) includes at least one entry opening (24) facing a transmission interior and an outwardly facing exit opening (40). The breather assembly (7) also includes at least one oil collection element (8) arranged between the breather element (9) and an oil spray source (6).Type: GrantFiled: July 25, 2018Date of Patent: January 30, 2024Assignee: ZF FRIEDRICHSHAFEN AGInventors: Niko Zwerger, Michael Obergasser, Steffen Barth
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Patent number: 11885396Abstract: A transmission arrangement for an at least partially electrically driven vehicle includes a first electric machine defining a first central longitudinal axis and having a first gear stage and a second gear stage. The arrangement further includes a second electric machine defining a second longitudinal axis and having a first gear stage and a second gear stage. Further, the arrangement includes a transmission housing, with the first and second electric machines being arranged in the transmission housing. Additionally, the arrangement includes a differential drivingly connected to the second gear stages of the first and second electric machines. The first and second central longitudinal axes are axially parallel to each other on a circular path, the circular path being perpendicular to an output axis.Type: GrantFiled: December 17, 2021Date of Patent: January 30, 2024Assignee: ZF FRIEDRICHSHAFEN AGInventors: Timo Wehlen, Stephan Scharr, Eckhardt Lübke, Manfred Till