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公开(公告)号：US12172710B2
公开(公告)日：2024-12-24
申请号：US17128475
申请日：2020-12-21
Applicant: ZF Automotive UK Limited
Inventor： Samuel Rees , Maciej Kudanowski
IPC: B62D5/04
Abstract: An electric power steering system includes an electric motor configured to provide power to a steering mechanism of a vehicle. A controller operates the electric motor in response to an input. A flash memory device is in communication with the controller. A temperature sensor provides an output indicative of a temperature of a part of the electric power steering system. The controller is configured to power down or prevent power up of the flash memory device if the temperature of the electric power steering system is outside of a predetermined temperature range. A method of operating an electric power steering system includes measuring a temperature of the electric power assisted steering system and switching off a flash memory device of the electric power steering system if the temperature of the electric power steering system is outside of a predetermined temperature range.
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公开(公告)号：US20240391519A1
公开(公告)日：2024-11-28
申请号：US18669705
申请日：2024-05-21
Applicant: ZF Automotive UK Limited
Inventor： Tamas Terdy
Abstract: A steering control system for a vehicle comprising a steering input member controlled by a driver of the vehicle comprises a steering sensor for generating an electrical signal as a function of the position of the input member. The steering control system further comprises a steering actuator which operates on the steered wheels of the vehicle as a function of the electrical signal generated by the steering sensor. A steering controller receives the electrical signal generated by the steering sensor and provides a current to the steering actuator in order to operate on the steered wheels. An accumulation counter is operatively connected with the steering controller and is configured to calculate and record the accumulated workload of the steering controller by accumulating instantaneous workloads throughout operation thereof.
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公开(公告)号：US20240270304A1
公开(公告)日：2024-08-15
申请号：US18441019
申请日：2024-02-14
Applicant: ZF Automotive UK Limited
Inventor： Mark Anthony Wilkes
IPC: B62D5/00
CPC classification number: B62D5/006
Abstract: A steering assembly for a steer-by-wire vehicle comprises a rotatably mounted steering column configured for attachment of a steering member at one end, the steering column being rotatable about its longitudinal axis. The steering assembly further comprises a damper having a housing defining a volume for receipt of damping fluid; a rotor within the housing, the rotor being coupled with the steering column and rotatable therewith; a stator mounted within the housing, the stator being moveable within the housing within a defined range of movement; and a biasing arrangement acting on the stator. Each of the stator and rotor comprises a shear surface, the shear surfaces of the stator and the rotor being positioned adjacent one another to generate a resistance to rotation of the rotor when the housing contains damping fluid. Furthermore, the total surface area of the shear surfaces of the stator and the rotor positioned adjacent one another which generates the resistance to rotation of the rotor varies as the steering column is rotated from the straight ahead position by virtue of displacement of the stator relative to the rotor.
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公开(公告)号：US20240270302A1
公开(公告)日：2024-08-15
申请号：US18441593
申请日：2024-02-14
Applicant: ZF Automotive UK Limited
Inventor： Russell Wilson-Jones , Mark Anthony Wilkes
Abstract: A steering assembly for a steer-by-wire vehicle comprises a rotatably mounted elongate steering column configured for attachment of a steering member at one end, the steering column being rotatable about its longitudinal axis in either direction from a straight-ahead position. The steering assembly further comprises a damper having a housing defining a volume for receipt of a damping fluid; a stator within the housing and rotatably fixed relative to the housing; and a rotor within the housing, the rotor being coupled with the steering column and rotatable therewith. Each of the stator and rotor comprises a shear surface, the shear surfaces of the stator and the rotor being positioned adjacent one another to generate a resistance to rotation of the rotor when the housing contains damping fluid; and the total surface area of the shear surfaces of the stator and the rotor positioned adjacent one another which generates the resistance to rotation of the rotor varies as the steering column is rotated from the straight-ahead position.
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公开(公告)号：US11940555B2
公开(公告)日：2024-03-26
申请号：US17046862
申请日：2019-04-18
Applicant: ZF AUTOMOTIVE UK LIMITED
Inventor： Rob Pinnock
IPC: G01S7/40 , G01S13/86 , G01S13/931
CPC classification number: G01S7/4026 , G01S7/40 , G01S13/86 , G01S13/931 , G01S7/403
Abstract: A radar apparatus for use in a vehicle (1) comprises a radar housing (6) which houses a radar sensor (7), a first 3-axis accelerometer (8) fixed so it cannot move relative to the radar sensor (7); a movable support (9) that comprises a first part (10), a second part (12), and an actuator (13) in which in use the first part (10) is fixed relative to the body (11) of the vehicle, the second part (12) is fixed relative to the radar housing (6), and the actuator is operable to move the second part relative to the first part around an axis that is fixed relative to the vehicle body by an actuator, and a signal processing apparatus (15) configured in use to determine a misalignment of the radar sensor from one or more of the signals output from the first 3-axis accelerometer (8) and one or more signals output from a second 3-axis accelerometer (16) fitted to the vehicle (1), in which the signals used are captured at different moments in time when the second part of the movable support is in two different positions.
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Patent Agency Ranking
公开(公告)号：US20240055942A1
公开(公告)日：2024-02-15
申请号：US18363248
申请日：2023-08-01
Applicant: ZF Automotive UK Limited
Inventor： Russell Wilson-Jones , Christos Prevezianos , Ari Akbar Hassan Al-Jaf
Abstract: A dual motor drive assembly comprises a housing, a shaft rotatably mounted with respect to the housing, a first gear connected to and configured to rotate with the shaft, and first and second motors, each having an output driving a respective output gear, the output gears being engaged with the first gear, in which each motor comprises a permanent magnet motor that has the same number of poles and stators such that each motor produces the same pattern of cogging torque over a complete mechanical revolution of the motor.
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公开(公告)号：US20230331290A1
公开(公告)日：2023-10-19
申请号：US18298759
申请日：2023-04-11
Applicant: ZF Automotive UK Limited
Inventor： Samuel Morris , Timothy Buttery , Philip Owen Browne , Pablo Rojo
CPC classification number: B62D5/001 , B62D5/0403 , B62D1/16 , B62D5/0409
Abstract: A steering column assembly for a vehicle comprises an elongate steering column mounted for rotation about its longitudinal axis and configured for attachment of a steering wheel at one end. A first gear is connected to the steering column at a location spaced from where the steering wheel is attached and is configured to rotate with the steering column. The assembly has first and second motors, each having an output shaft and first and second worm screws directly connected to and rotatable with the output shaft of the first and second motors, respectively and engaged with the first gear, and a control arrangement is configured to operate the first and second motors. A motor position sensor arrangement senses the rotational position of the motor output shafts, each sensor arrangement comprising a target member fixedly mounted to a respective motor output shaft on an opposite side of the worm screw from the motor and a sensor for detecting the target member. The control arrangement comprises a substantially planar circuit board carrying one or more electrical and/or electronic components, the plane of the circuit board being inclined to the longitudinal axis of the steering column.
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公开(公告)号：US20230192177A1
公开(公告)日：2023-06-22
申请号：US18073093
申请日：2022-12-01
Applicant: ZF Automotive UK Limited
Inventor： Aleksejs Semjonovs
CPC classification number: B62D5/006 , B62D15/0215
Abstract: A steer-by-wire steering system for a vehicle comprises: a rotatable steering shaft; a driver-operated steering input member connected to the steering shaft; and first and second torque feedback motors having output shafts connected to the steering shaft and each being operable to apply either a feedback torque or an offset torque to the steering shaft. The system further comprises: an angular position measuring arrangement for measuring the angular position of the steering shaft; an angular acceleration determination arrangement for determining the angular acceleration of the steering shaft; an envelope determination arrangement for establishing or determining an envelope of the measured or calculated angular acceleration of the steering shaft; a magnitude determination arrangement for determining the magnitude of the offset torque to be applied by the motors as a function of the envelope of the angular acceleration of the steering shaft, as modified by a scaling factor whereby a maximum defined offset torque is applied at a maximum defined amplitude and angular acceleration of the steering shaft.
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公开(公告)号：US11662460B2
公开(公告)日：2023-05-30
申请号：US16646586
申请日：2018-09-18
Applicant: ZF AUTOMOTIVE UK LIMITED
Inventor： Robert Pinnock , Roger Hazelden
IPC: G01S13/931 , G01S7/40 , G01S13/00
CPC classification number: G01S13/931 , G01S7/4026 , G01S2013/9327
Abstract: Apparatus for detecting misalignment of a radar unit (2; 22) of a vehicle (3; 23), the apparatus comprising: a magnet (1; 21), which may be a permanent magnet or an electromagnet, arranged to be mounted on the vehicle (3; 23) spaced from the radar unit (2; 22); a magnetic field sensor (4; 24), typically a three-axis magnetic field sensor, such as a Hall Effect Sensor, arranged to be coupled to the radar unit (2; 22) and having an output at which a signal indicative of the magnetic field at the magnetic field sensor (4; 24); and a processor (5; 25) coupled to the output and arranged to determine a misalignment of the radar unit (2; 22) based on the output of the magnetic field sensor (4; 24). Where the magnet is an electromagnet (21), the field strength of the electromagnet (21) can be varied by its drive circuit (30).
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公开(公告)号：US11644344B2
公开(公告)日：2023-05-09
申请号：US17188000
申请日：2021-03-01
Applicant: ZF Automotive UK Limited
Inventor： Ari Akbar Hassan Al-Jaf , Harvey Smith
CPC classification number: G01D5/2497 , G01D5/145
Abstract: A magnetic encoder includes one or more sensors and an encoder element having at least two tracks of encoder regions. Each region comprises a magnetic pole. Each sensor has one or more sensing elements associated with a respective track and generates an output that is indicative of the magnetic field associated with that track. At least one track has a differing number of poles to at least one of the other tracks. The properties of the poles of a first one of the tracks differ along the track such that there is a periodic variation along the first track of the magnetic field emitted by the first track that is detected by the sensing elements associated with the first track which at least partially cancels out a corresponding periodic variation in field from the other tracks that is also detected by the sensing elements associated with the first track.
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