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公开(公告)号：US20230234639A1
公开(公告)日：2023-07-27
申请号：US18156826
申请日：2023-01-19
发明人： Takashi Koudai , Yuji Fujita , Yugo Nagashima , Kazuma Hasegawa , Yuuta Kajisawa , Shintaro Takayama , Hiroyuki Katayama , Yosuke Yamashita , Masaharu Yamashita
摘要： A steering control device includes a control unit. The control unit is configured to execute a control angle calculation process, an angle feedback process, and a standard value adjustment process. The control angle calculation process is a process of calculating a control angle as an absolute angle relative to a standard value, and the angle feedback process is a process of performing feedback control on the control angle, and the standard value adjustment process is a process of adjusting the stored standard value. The standard value adjustment process includes a process of, when, in a straight-ahead state, the control angle deviates from a value showing the straight-ahead state, adjusting the standard value such that the deviation of the control angle from the value showing the straight-ahead state decreases.
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公开(公告)号：US12128964B2
公开(公告)日：2024-10-29
申请号：US17966043
申请日：2022-10-14
发明人： Kazuma Hasegawa , Yuji Fujita , Yugo Nagashima , Masaharu Yamashita , Shintaro Takayama , Yosuke Yamashita , Hiroki Tomizawa , Nobuyori Nakajima
CPC分类号： B62D5/006 , B62D5/0424 , B62D5/0463 , B62D5/0481
摘要： A control device for a vehicle includes a plurality of control circuits configured to control a control object in cooperation or in combination by starting with powering-on of a vehicle as a trigger. Each of the plurality of control circuits is configured to perform a synchronization process and power latch control. Each of the plurality of control circuits is configured to maintain the operation mode immediately before the vehicle has been powered off in a period in which the power latch control is being performed. Each of the plurality of control circuits is configured not to perform the synchronization process in a predetermined period when the vehicle has been powered on.
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公开(公告)号：US12049262B2
公开(公告)日：2024-07-30
申请号：US17852665
申请日：2022-06-29
发明人： Atsushi Satou , Yosuke Yamashita , Masaharu Yamashita , Toshihiro Takahashi , Tokuaki Hibino , Yuji Fujita , Yugo Nagashima , Kazuma Hasegawa , Yuuta Kajisawa , Kenichi Abe
IPC分类号： B62D5/00 , B60R16/033 , B62D5/04
CPC分类号： B62D5/003 , B60R16/033 , B62D5/0484
摘要： A steer-by-wire steering system, including a steering device including a dual-system steering motor including a main system and a sub system, wherein a power supply to the main system is conducted selectively by a main power source and a backup power source, and a power supply to the sub system is conducted by only the main power source, wherein, in a normal power-supply situation in which the power supply to the main system and to the sub system is conducted by the main power source, a controller controls the sub system to operate in accordance with the main system, and wherein, in a backup power-supply situation in which the power supply to the main system is conducted by the backup power source, the controller controls the main system not to operate or to operate while limiting the power supply to the main system and controls the sub system independently.
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公开(公告)号：US12024174B2
公开(公告)日：2024-07-02
申请号：US17972017
申请日：2022-10-24
发明人： Kazuma Hasegawa , Yuji Fujita , Takashi Kodera , Isao Namikawa , Atsushi Ishihara , Masaharu Yamashita , Kenji Shibata , Yuko Goto , Hiroki Tomizawa , Nobuyori Nakajima
IPC分类号： B60W10/20 , B60W30/182 , B60W50/02 , B60W50/029 , B60W50/08 , B60W50/00
CPC分类号： B60W30/182 , B60W10/20 , B60W50/0205 , B60W50/029 , B60W50/082 , B60W50/085 , B60W2050/0022 , B60W2050/0292 , B60W2510/083 , B60W2510/202
摘要： A control device includes control circuits of a plurality of systems. When a transition condition is established, the control circuits of the systems make transition of a driving mode from a first driving mode to a second driving mode, and when a return condition is established in a state in which the driving mode has transitioned to the second driving mode, the control circuits of the systems make transition of the driving mode from the second driving mode to the first driving mode while gradually changing the current command values of the control circuits' own systems toward the current command values before the adjustment.
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公开(公告)号：US11919579B2
公开(公告)日：2024-03-05
申请号：US17540000
申请日：2021-12-01
发明人： Kazuma Hasegawa , Toshihiro Takahashi , Yuji Fujita , Kenichi Abe , Yugo Nagashima , Yuuta Kajisawa , Takashi Koudai , Hiroaki Hanzawa , Atsushi Satou , Yosuke Yamashita , Shintaro Takayama , Tokuaki Hibino
CPC分类号： B62D5/046 , B60R16/02 , B62D5/0406 , B62D5/0481 , B62D6/10
摘要： A power supply system includes a system control unit, an auxiliary power supply, and an auxiliary-power-supply control unit. The system control unit and the auxiliary-power-supply control unit are configured such that information of at least one control unit of the system control unit and the auxiliary-power-supply control unit is able to be output to another control unit of the system control unit and the auxiliary-power-supply control unit. The at least one control unit is configured to output information indicating that an operation of the at least one control unit is stopped to the other control unit when the at least one control unit stops the operation of the at least one control unit.
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公开(公告)号：US20230303159A1
公开(公告)日：2023-09-28
申请号：US18158591
申请日：2023-01-24
发明人： Takashi Koudai , Yuji Fujita , Yugo Nagashima , Kazuma Hasegawa , Yuuta Kajisawa , Masaharu Yamashita , Yosuke Yamashita , Kazuaki Iida , Shintaro Takayama
IPC分类号： B62D5/04
CPC分类号： B62D5/0481
摘要： A turning control device includes a precursor detection circuit configured to detect a precursor of an abnormality by which a smooth operation of a turning device is impaired. The precursor detection circuit is configured to start measurement of a total running time of a vehicle when the precursor is detected, and is configured to execute a process of reporting the precursor, based on the measured total running time. The precursor detection circuit is configured to perform the measurement of the total running time regardless of whether the precursor is detected again, when a vehicle electric power source is switched off and then is switched on again after the precursor is detected once.
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