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1. 发明授权

US12037055B2 Steering control device 有权
公开(公告)号：US12037055B2
公开(公告)日：2024-07-16
申请号：US17729083
申请日：2022-04-26
申请人： JTEKT CORPORATION , TOYOTA JIDOSHA KABUSHIKI KAISHA
发明人： Hiroto Suzuki , Isao Namikawa , Yoshio Kudo , Yuki Suehiro , Kosuke Akatsuka
IPC分类号： B62D5/00 , B62D5/04 , B62D15/02
CPC分类号： B62D5/006 , B62D5/0409 , B62D5/0424 , B62D5/046 , B62D15/0235
摘要： A steering control device includes an electronic control unit. The electronic control unit is configured to calculate a target rotation angle of a shaft rotating with a turning operation of turning wheels based on a steering angle of a steering wheel acquired from a rotation angle of a reaction motor, to calculate a command value based on the target rotation angle and a steering torque acquired from a torsion angle of a torsion bar twisting with an operation of the steering wheel, and to compensate for the torsion angle by adding the torsion angle as a compensation value to the steering angle. The electronic control unit is configured to change a value of the torsion angle that is added to the steering angle according to a degree of change of a state variable used to calculate the command value.

2. 发明公开

US20230382453A1 STEER-BY-WIRE STEERING SYSTEM 审中-公开
公开(公告)号：US20230382453A1
公开(公告)日：2023-11-30
申请号：US18323695
申请日：2023-05-25
申请人： ZF Automotive Germany GmbH
发明人： Stephan Walentowski
IPC分类号： B62D15/02 , B62D5/04
CPC分类号： B62D15/0235 , B62D5/0463
摘要： A steer-by-wire steering system for a vehicle is disclosed, having a steering wheel, at least one sensor for capturing a steering angle of the steering wheel, a processing logic unit for determining a wheel setting angle requirement on the basis of the captured steering angle, and an actuator unit for setting a wheel setting angle at wheels of the vehicle according to the wheel setting angle requirement determined by the processing logic unit. The sensor is electrically connected directly to the vehicle electrical system and is supplied with electrical energy via the latter.

3. 发明授权

US11713077B2 Systems and methods for electric track vehicle control 有权
公开(公告)号：US11713077B2
公开(公告)日：2023-08-01
申请号：US17199194
申请日：2021-03-11
申请人： Vortrex LLC
发明人： Michael J. Hermel
IPC分类号： B62D15/02 , B62D5/04
CPC分类号： B62D15/0235 , B62D5/046 , B62D5/0487
摘要： Systems and methods for track vehicle control are provided. In one embodiment, a method comprises: receiving a steering control signal; inputting a first rotation signal from a first encoder representing a rotational frequency and phase of a first electric motor coupled to a first continuous track mechanism; inputting a second rotation signal from a second encoder representing a rotational frequency and phase of a second electric motor coupled to a second continuous track mechanism; and outputting motor control signals to a first and second motor controllers in response to the steering control signal and differences between the rotational frequency and phase for the first electric motor and the rotational frequency and phase for the second electric motor, wherein the first motor controller is coupled to the first electric motor and the second motor controller is coupled to the second electric motor.

4. 发明申请

US20180346018A1 STEERING CONTROLLER 审中-公开
公开(公告)号：US20180346018A1
公开(公告)日：2018-12-06
申请号：US15989568
申请日：2018-05-25
申请人： JTEKT CORPORATION
发明人： Nobuaki KATAOKA , Shingo MAEDA , Jun HASEGAWA , Masayuki KITA , Takahiro TOKO
IPC分类号： B62D6/00 , B62D5/04
CPC分类号： B62D5/0457 , B62D5/0469 , B62D15/0235 , B62D15/0245
摘要： A control steered angle calculation unit includes: an end position determination unit that determines whether a rack shaft is located at either one of right and left rack end positions; a motor absolute angle calculation unit that detects a motor absolute angle; an end position-corresponding motor angle setting unit that, when the rack shaft is determined to be located at either one of the right and left rack end positions, sets the detected motor absolute angle as an end position-corresponding motor angle corresponding to the one of the right and left rack end positions; and a control steered angle origin setting unit that calculates an average value of right and left end position-corresponding motor angles as an offset angle, and sets an angle obtained by subtracting the offset angle from the detected motor absolute angle as an origin of the control steered angle represented by the motor ab solute angle.

5. 发明授权

US10011297B2 Vehicle steering device 有权
公开(公告)号：US10011297B2
公开(公告)日：2018-07-03
申请号：US15360552
申请日：2016-11-23
申请人： JTEKT CORPORATION
发明人： Toshiaki Oya , Kotaro Okada
IPC分类号： B62D6/00 , B62D5/04 , B62D5/00 , B62D15/02
CPC分类号： B62D5/0487 , B62D5/001 , B62D5/005 , B62D5/0415 , B62D5/0418 , B62D5/046 , B62D5/0481 , B62D5/0484 , B62D6/002 , B62D15/022 , B62D15/0235
摘要： A vehicle steering device includes: a target-steered-angle setting unit configured to set a left target steered angle that is a target value of the steered angle of a left steered wheel and a right target steered angle that is a target value of the steered angle of a right steered wheel; left motor controllers configured to control a left steering motor based on a left-steered-angle deviation that is a difference between the left steered angle and the left target steered angle; right motor controllers configured to control a right steering motor based on a right-steered-angle deviation that is a difference between the right steered angle and the right target steered angle; and an abnormality determination unit configured to determine that an abnormality has occurred when an absolute value of difference between the left-steered-angle deviation and the right-steered-angle deviation is equal to or larger than a first threshold.

6. 发明申请

US20180029634A1 Torque Detection Device and Electric Power Steering System 审中-公开
公开(公告)号：US20180029634A1
公开(公告)日：2018-02-01
申请号：US15653946
申请日：2017-07-19
申请人： JTEKT CORPORATION
发明人： Yuichi TOYAMA
IPC分类号： B62D5/04 , G01L3/04
CPC分类号： B62D5/0463 , B62D5/0481 , B62D6/10 , B62D15/0215 , B62D15/0235 , B62D15/0245 , G01D11/245 , G01L3/02 , G01L3/04 , G01L3/10 , G01L3/101 , G01L3/104 , G01L3/1435 , G01L5/221 , G01L25/003
摘要： A torque detection device capable of suppressing intrusion of static electricity thereinto. A magnetism collection unit includes magnetism collection rings, first and second magnetism collection holders that hold the magnetism collection rings, respectively, and a magnetic shield that covers the outer peripheries of the magnetism collection rings. The inner peripheral surface of the first magnetism collection holder is provided wife recessed portions. The outer peripheral surface of the second magnetism collection holder is provided with engagement protrusions to be inserted into the recessed portions. The inner peripheral surface of the second magnetism collection holder is provided with recessed portions. The inner peripheral surface of the first magnetism collection holder is provided with protrusions that project toward the second magnetism collection holder. The protrusions are inserted into the recessed portions when the first magnetism collection holder and the second magnetism collection holder are assembled to each other.

7. 发明申请

US20170369092A1 ELECTRIC POWER STEERING DEVICE 审中-公开
公开(公告)号：US20170369092A1
公开(公告)日：2017-12-28
申请号：US15541081
申请日：2015-02-26
申请人： Mitsubishi Electric Corporation
发明人： Hajime IIDA , Hiroshi GOKAN , Kenji OGAWA
IPC分类号： B62D5/04 , H02P6/06 , H02K1/27
CPC分类号： B62D5/046 , B62D15/0235 , H02K1/27 , H02K11/215 , H02K21/14 , H02P6/06 , H02P6/17 , H02P6/182 , H02P23/0086 , H02P23/03 , H02P2203/05
摘要： In an electric power steering device assisted by a brushless motor, an induced voltage from a brushless motor is detected when a main power supply is off. The motor is determined to be in a high rpm state when the induced voltage is in a first transient state from a voltage ≦a high rpm detection threshold Th1 to a voltage≧Th1, thereby setting an intermittent excitation cycle of a revolution angle sensor connected to the motor to a short cycle. The motor is determined to be in a low rpm state when the induced voltage becomes a voltage≧a high rpm detection threshold Th2 after a wait period corresponding to an electrical angle between peaks or valleys of an output voltage has elapsed in a second transient state from a voltage–Th1 to a voltage≧Th2, thereby setting the cycle to a long cycle.

8. 发明授权

US09796407B2 Steering angle detecting apparatus for vehicles and electric power steering apparatus equipped therewith 有权
公开(公告)号：US09796407B2
公开(公告)日：2017-10-24
申请号：US15109566
申请日：2016-02-01
申请人： NSK LTD.
发明人： Takayoshi Sugawara , Ryo Minaki , Hideki Sawada
IPC分类号： A01B69/00 , B62D6/00 , B62D12/00 , B63H25/04 , G05D1/00 , G06F7/00 , G06F17/00 , G06F19/00 , B62D5/04 , G01B21/22 , G01B7/30 , B62D15/02
CPC分类号： B62D5/046 , B62D5/04 , B62D5/0481 , B62D6/00 , B62D15/0215 , B62D15/0235 , B62D15/0245 , G01B7/30 , G01B21/22
摘要： A steering angle detecting apparatus for vehicles includes a vernier calculating section that performs vernier calculation based on a steering shaft angle and a motor angle, a neutral period specifying section that specifies a neutral period including a neutral point based on a reference angle calculated by the vernier calculation in the vernier calculating section, and a neutral point specifying section that specifies the neutral point from the neutral period and a stored neutral point value, and outputs a steering angle the neutral point of which is specified.

9. 发明申请

US20170158231A1 An Electric Power Assisted Steering System 有权
公开(公告)号：US20170158231A1
公开(公告)日：2017-06-08
申请号：US15320370
申请日：2015-06-23
申请人： TRW Limited
发明人： James Owen Patrick Farrelly
IPC分类号： B62D6/10 , B62D15/02 , B62D5/04
CPC分类号： B62D6/10 , B62D5/0463 , B62D15/0215 , B62D15/0235 , G01L5/221
摘要： An electric power assisted steering apparatus comprising a combined angular position and torque sensor assembly comprising an upper column shaft that in use is operatively connected to a steering wheel of the vehicle, a lower column shaft that in use is operatively connected to the road wheels of the vehicle, a torsion bar that interconnects the upper column shaft and the lower column shaft, a first and a second torque signal generating means that each generate a first torque signal based on angular deflection of the torsion bar, an absolute position signal generating means that in use produces an absolute upper column position signal indicative of the angular position of the upper column shaft, an electric motor that is connected to the lower column shaft of the torque sensor assembly, and a motor position sensor carried by the motor that provides a motor position signal dependent on the angular position of the motor rotor. The apparatus further comprises a virtual torque signal generating means that in use is adapted to determine a third torque signal from a combination of the motor position signal and the absolute angular position signal produced by the processing means.

10. 发明申请

US20170120948A1 ELECTRIC POWER STEERING APPARATUS 有权
公开(公告)号：US20170120948A1
公开(公告)日：2017-05-04
申请号：US15032091
申请日：2015-04-16
申请人： NSK LTD.
发明人： Tetsuya KITAZUME
IPC分类号： B62D5/04 , B62D15/02 , B62D6/00
CPC分类号： B62D5/0466 , B62D5/0409 , B62D6/002 , B62D15/0235
摘要： [Problem]An object of the present invention is to provide an electric power steering apparatus that is possible to actively return the steering wheel to the neutral point at the vehicle running state to give back to a straight running state by calculating the return control current corresponding to the steering angle and the motor angular velocity/Gr ratio and by compensating the current command value.[Means for Solving the Problem]The present invention comprises an active-return control section that calculates a return control current based on a steering angle, the vehicle speed and a motor angular velocity/Gr ratio, and drives the motor by a compensated-current command value obtained by subtracting the return control current from the current command value, wherein the active-return control section comprises a base-return control current calculating section that calculates a base-return control current, a target steering velocity calculating section that calculates a target steering velocity, a return control gain calculating section that obtains a deviation between the target steering velocity and the motor angular velocity/Gr ratio and sign-processes, and calculates a return control gain by at least two among a P-control calculation, an I-control calculation and a D-control calculation, a limiter that limits a maximum value of the return control gain, and a correcting section to output the return control current by correcting the base-return control current with an output of the limiter.

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