公开(公告)号：US12049262B2

公开(公告)日：2024-07-30

申请号：US17852665

申请日：2022-06-29

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA ,  JTEKT Corporation

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.

公开(公告)号：US11987298B2

公开(公告)日：2024-05-21

申请号：US17657666

申请日：2022-04-01

申请人： DENSO CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA ,  JTEKT CORPORATION

发明人： Takuya Maegawa ,  Hiroki Tomizawa ,  Hiroyasu Otake ,  Yuuta Kajisawa ,  Yuji Fujita ,  Tokuaki Hibino ,  Yosuke Yamashita ,  Atsushi Satou ,  Masaharu Yamashita

IPC分类号： B62D5/04 ,  H02K7/00 ,  H02P21/00 ,  H02P21/22 ,  H02P27/08 ,  H02P27/12 ,  H02P29/024 ,  H02P29/028 ,  H02P29/032

CPC分类号： B62D5/0484 ,  B62D5/0424 ,  B62D5/046 ,  B62D5/0463 ,  B62D5/0496 ,  H02K7/003 ,  H02P21/0089 ,  H02P21/22 ,  H02P27/085 ,  H02P27/12 ,  H02P29/025 ,  H02P29/028 ,  H02P29/032 ,  B62D5/0481

摘要： A main power supply having a large capacity and a backup power supply having a small capacity are switchable by a power supply switching determination unit in a system. A motor control device drives a motor by the main power supply or the backup power supply. A drive control unit outputs a drive signal, calculated by feedback control of the current detection value with respect to the current command value, to an inverter circuit. When the power supply switching determination unit switches from the main power supply to the backup power supply, the drive control unit moves from a normal control using the main power supply to a backup control that restricts an electric power consumption and prevents the backup power supply from stopping.

公开(公告)号：US11919579B2

公开(公告)日：2024-03-05

申请号：US17540000

申请日：2021-12-01

申请人： JTEKT CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

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

IPC分类号： B62D5/04 ,  B60R16/02 ,  B62D6/10

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.