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公开(公告)号：US11919581B2
公开(公告)日：2024-03-05
申请号：US17069994
申请日：2020-10-14
申请人： JTEKT CORPORATION
CPC分类号： B62D5/0481 , B62D15/024 , B62D15/0245
摘要： A steering control device includes an electronic control unit. The electronic control unit is configured to perform end contact relaxation control for correcting a current command value such that a decrease of an end separation angle indicating a distance of an absolute steering angle from an end-position-corresponding angle is limited when the end separation angle is equal to or less than a predetermined angle and to perform partial release control for decreasing a correction value of the current command value due to execution of the end contact relaxation control based on a steering torque which is input to a steering system when a vehicle is intended to travel while turning at the time of execution of the end contact relaxation control.
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2.发明授权公开(公告)号：US11801895B2
公开(公告)日：2023-10-31
申请号：US17367635
申请日：2021-07-06
申请人： NIDEC CORPORATION
发明人： Sohei Miyake , Jun Ogawa , Satoru Onishi , Masaya Ishikawa
CPC分类号： B62D15/0245 , B62D5/049 , B62D6/00 , B62D15/0215
摘要： A control device includes a processor and a storage device storing a program for controlling an operation of the processor. The processor determines whether a vehicle is in a straight-ahead traveling state, based on a vehicle speed detected by a vehicle speed sensor, a steering wheel torque applied to a steering wheel, and a steering wheel angle as a rotation angle of an input shaft. The processor stores the steering wheel angle in the memory when determining that the vehicle is in the straight-ahead traveling state. The processor stores the steering wheel angle in the memory multiple times when determining that the vehicle is in the straight-ahead traveling state. The processor calculates a corrected steering angle amount from a weighted average of the steering wheel angles stored in the memory.
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公开(公告)号：US11780489B2
公开(公告)日：2023-10-10
申请号：US17909154
申请日：2022-02-04
申请人： NSK LTD.
发明人： Shoya Maruyama , Tetsuya Kitazume
CPC分类号： B62D5/0409 , B62D6/002 , B62D15/0235 , B62D15/0245
摘要： A turning angle detecting device includes: a first storage unit configured to store a turning angle neutral point correction value being a difference between a median of the turning angles at respective limits in right and left steering and the turning angle in a straight traveling state; a second storage unit configured to store an initial position of a movable portion of an actuator of a wheel turning mechanism in the straight traveling state; a first turning angle calculating unit configured to calculate a first turning angle with respect to the median of the turning angles at the respective limits based on a detection value of a position of the movable portion; and a second turning angle calculating unit configured to calculate a second turning angle based on the detection value, the turning angle neutral point correction value, the initial position and the first turning angle.
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公开(公告)号：US20190248413A1
公开(公告)日：2019-08-15
申请号：US16105011
申请日：2018-08-20
CPC分类号： B62D15/0215 , B62D15/0245 , G01B7/30 , G01D5/04
摘要： An absolute steering angle sensor includes a single main gear having first gear teeth with a first pitch, second gear teeth with a second pitch, wherein the first and second gear pitches are different. A first magnet gear is driven by the first gear teeth, wherein the first magnet gear has a first gear profile and a first diameter. A second magnet gear is driven by the second gear teeth, wherein the second magnet gear has a second gear profile and a second diameter. The first and second gear profiles are different, and the first and second diameters are different. A first magnet rotates with the first magnet gear and emits a first magnetic field, and a second magnet rotates with the second magnet gear and emits a second magnetic field. A sensor assembly measures strengths of the first and second magnetic fields and calculates an absolute steering angle.
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公开(公告)号：US20180141584A1
公开(公告)日：2018-05-24
申请号：US15358386
申请日：2016-11-22
CPC分类号： B62D5/0478 , B62D5/001 , B62D5/0433 , B62D5/0457 , B62D7/224 , B62D15/02 , B62D15/0245
摘要： Vehicle steering can be synchronized by first, turning the steering rack from lock-to-lock to determine a steering rack midpoint, second, turning the steering wheel from lock-to-lock to determine a steering wheel midpoint, third, synchronizing the steering rack with the steering wheel based on the steering rack midpoint and the steering wheel midpoint, and fourth, piloting a vehicle based on the synchronized steering rack and steering wheel; wherein the steering rack is mechanically decoupled from a steering wheel of the vehicle before turning the steering rack from lock-to-lock and before turning the steering wheel from lock-to-lock.
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公开(公告)号：US09937951B2
公开(公告)日：2018-04-10
申请号：US15113392
申请日：2015-01-29
申请人： JTEKT EUROPE
CPC分类号： B62D5/0481 , B62D6/00 , B62D15/0245
摘要： A reference position in a power steering system is defined by acquiring a first edge position corresponding to a first edge of a first index pulse generated when a movable steering member passes an indexed position in a first movement direction; acquiring a second edge position corresponding to a second edge of a second index pulse generated when the movable steering member passes the same indexed position in a second movement position opposite the first movement direction; and calculating the reference position from the first edge position and the second edge position.
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公开(公告)号：US09862414B2
公开(公告)日：2018-01-09
申请号：US14969626
申请日：2015-12-15
申请人： Robert Bosch GmbH
发明人： Chengxuan Fu
CPC分类号： B62D15/0245 , B60W50/14 , B60W2520/14 , B60W2550/402
摘要： A method for compensating a steering wheel angle signal, which is subject to an offset, in a vehicle, includes: a filtering step; and a use step. In the filtering step, the steering wheel angle signal is filtered while the vehicle is traveling, using a filtering rule, in order to obtain a mean value of the steering wheel angle signal. The steering wheel angle signal is filtered if a lane and/or a roadway of the vehicle meets predetermined criteria. In the use step, the mean value is used to compensate the offset.
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公开(公告)号：US20170140228A1
公开(公告)日：2017-05-18
申请号：US15349173
申请日：2016-11-11
申请人： Werner Jürgen LANG , Johann FELLNER
发明人： Werner Jürgen LANG , Johann FELLNER
CPC分类号： G06K9/00791 , B60R1/00 , B60R1/002 , B60R1/007 , B60R1/025 , B60R1/12 , B60R2001/1253 , B60R2300/101 , B60R2300/103 , B60R2300/20 , B60R2300/802 , B60R2300/804 , B60R2300/8086 , B60Y2200/148 , B60Y2400/92 , B62D15/024 , B62D15/0245 , G08G1/167
摘要： A system for a vehicle (13) having a driver's cabin (15) and a rearward extending portion (14) that is pivotable with respect to the driver's cabin (15), for capturing a rear part (17) of the rearward extending portion (14), the system having at least two wheel sensors (2, 3) located on opposite ends of an axis (18, 19) of the rearward extending portion (14), for acquiring information on a rotational movement of wheels attached to the ends of the axis (18, 19), and a control unit (4) connected with the wheel sensors (2, 3), which control unit determines the rear part (17) of the rearward extending portion (14) based on the acquired information on the rotational movement of the wheels.
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公开(公告)号：US20170137054A1
公开(公告)日：2017-05-18
申请号：US15320389
申请日：2015-06-23
申请人： TRW Limited
CPC分类号： B62D5/049 , B62D5/0493 , B62D6/10 , B62D15/0215 , B62D15/0235 , B62D15/0245 , G01L3/102 , G01L5/22 , G01L5/221 , G01L25/003
摘要： A combined angular position and torque sensor assembly for use in an electric power assisted steering system comprises an input part for connection to an upper column shaft, an output part for connection to a lower column shaft, a torsion bar that interconnects the input shaft and the output shaft, a first and second upper column angular position sensing means that each produce at least one output signal that is dependent on the angular position of the upper column shaft; and a processing means which produces a first torque signal indicative of the torque carried by the torsion bar. The processing means further includes means for producing a first absolute angular position signal by processing the output signals of the first and secondary sensors in a first way and a second absolute angular position signal processing the output of the same two sensors in a different way, and further comprises a cross
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公开(公告)号：US09650066B2
公开(公告)日：2017-05-16
申请号：US14431563
申请日：2014-09-02
申请人： NSK LTD.
CPC分类号： B62D5/046 , B62D5/04 , B62D6/00 , B62D6/002 , B62D15/0245 , G01B7/30 , G01B21/045
摘要： An electric power steering apparatus having a function for detecting a steering speed, includes a time stamp attaching section that attaches a time stamp (ATi) to a detection signal (Ai) and attaches a time stamp (BTj) to a detection signal (Bj); a storing section that stores the detection signal (Bj) to which the time stamp (BTj) is attached; a synchronous signal searching section that searches the detection signal (Bj) most synchronized with the detection signal (Ai) based on the time stamps (ATi and BTj); a vernier calculating section that performs a calculation of an angle difference between synchronous signals searched by the synchronous signal searching section and a vernier calculation and outputs an absolute steering angle of a sensor reference; an initial steering angle calculating section that calculates an initial steering angle value from the absolute steering angle; and a steering angle output section that obtains a steering angle.
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