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公开(公告)号：US11661107B2
公开(公告)日：2023-05-30
申请号：US17218957
申请日：2021-03-31
申请人： JTEKT CORPORATION
发明人： Yoshiyuki Uchino , Yusuke Kakimoto , Koji Anraku , Isao Namikawa , Kenji Shibata , Takafumi Sato
摘要： A steering control device includes control circuitry configured to perform synchronization control. The synchronization control includes a target synchronization angle calculating process of calculating a target synchronization angle that is a steering-side rotation angle satisfying a predetermined correspondence relationship with respect to a turning-side rotation angle; a target relay angle calculating process of calculating a target relay angle that is located closer to a first side in a circumferential direction than a first-side angle is, the first-side angle being one of the steering-side rotation angle and the target synchronization angle and being located closer to the first side than another of the steering-side rotation angle and the target synchronization angle is; and a motor driving process of operating a steering-side motor such that the steering-side rotation angle reaches the target synchronization angle after operating the steering-side motor such that the steering-side rotation angle reaches the target relay angle.
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公开(公告)号：US11840295B2
公开(公告)日：2023-12-12
申请号：US17346476
申请日：2021-06-14
CPC分类号： B62D6/008 , B62D5/006 , B62D5/0466
摘要： A steering system includes a steering shaft; a motor configured to generate a torque applied to the steering shaft; and a control unit configured to control the motor. The control unit has a function of performing steering angle feedback control for causing a steering angle that is a rotation angle of a steering wheel to reach a target steering angle that is set based on a point of view of adjusting a rotational position of the steering wheel, as an adjustment process of adjusting the rotational position of the steering wheel. The control unit is configured to set a limit value for limiting a change range of the target steering angle with respect to the steering angle at each moment in a period in which automatic rotation of the steering wheel is hindered in a case where the automatic rotation is hindered while the adjustment process is being performed.
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公开(公告)号：US11814121B2
公开(公告)日：2023-11-14
申请号：US17340779
申请日：2021-06-07
申请人： JTEKT CORPORATION
摘要： A steering device includes a steering shaft, a motor, a stopper mechanism, and a controller. The controller is configured to execute a first process and a second process when a determined condition is established. The first process includes causing the steering wheel to operate to a first operation end through control of the motor and thereafter operate in reverse to a second operation end. The second process includes computing a neutral position of the steering wheel based on a rotational angle of the motor at a time when reverse operation of the steering wheel is started and at a time when the reverse operation of the steering wheel is ended.
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公开(公告)号：US12030559B2
公开(公告)日：2024-07-09
申请号：US17346796
申请日：2021-06-14
CPC分类号： B62D5/0463 , B62D15/021
摘要： A steering system includes a steering shaft that rotates along with an operation of a steering wheel; a motor configured to generate a torque that is applied to the steering shaft; and a control unit configured to control the motor. The control unit is configured to control the motor such that a rotation speed of the steering wheel decreases gradually to zero when automatic rotation of the steering wheel is stopped, in a case where the steering wheel is automatically rotated as an adjustment process of adjusting a rotational position of the steering wheel.
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公开(公告)号：US11834115B2
公开(公告)日：2023-12-05
申请号：US17347142
申请日：2021-06-14
CPC分类号： B62D6/008 , B62D5/006 , B62D5/0481
摘要： A steering system includes a steering shaft; a reaction motor; and a control unit configured to control the reaction motor. The control unit has a function of performing a correction process of rotating the steering wheel using the reaction motor such that a displacement in a rotational position of the steering wheel with respect to a correct rotational position corresponding to a turning position of the turning wheels decreases when a power supply of the vehicle is turned on and the rotational position of the steering wheel is different from the correct rotational position. The control unit is configured to perform the correction process when the displacement is equal to or greater than a predetermined permissible value and not to perform the correction process when the displacement is less than the permissible value.
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