-
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.
-
公开(公告)号：US20220332368A1
公开(公告)日：2022-10-20
申请号：US17713403
申请日：2022-04-05
发明人： Masaharu Yamashita , Masataka Okuda , Yosuke Yamashita , Yuji Fujita , Yuuta Kajisawa , Kenichi Abe , Hiroki Tomizawa , Nobuyori Nakajima
摘要： A steer-by-wire steering system for a vehicle, including: an operating member operable by a driver; a steering device including an electric motor and configured to steer a wheel by a force generated by the electric motor; a controller configured to control the steering device, wherein the controller enables the wheel to be steered in accordance with an operation of the operating member while imposing limitation on a supply current to the electric motor, and wherein the limitation imposed on the supply current is made smaller when a running speed of the vehicle is lower than a set speed and a steering motion of the wheel is a motion in a direction to decrease a steering amount than i) when the running speed of the vehicle is not lower than the set speed and ii) when the steering motion of the wheel is a motion in a direction to increase the steering amount.
-
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.
-
公开(公告)号：US11987298B2
公开(公告)日：2024-05-21
申请号：US17657666
申请日：2022-04-01
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：US12128969B2
公开(公告)日：2024-10-29
申请号：US17411153
申请日：2021-08-25
发明人： Yuuta Kajisawa , Fumihiko Sato , Masaharu Yamashita , Atsushi Satou , Masataka Okuda , Toshiyuki Mikida , Hiroaki Hanzawa
IPC分类号： B62D5/04
CPC分类号： B62D5/0463 , B62D5/0481
摘要： An electric power source device includes an auxiliary electric power source for a main electric power source that supplies electric power to electric power supply targets, including an electric circuit of a control system for controlling a specific control target and an electric circuit of a power system that requires larger electric power than the electric circuit of the control system; and a selection circuit configured to supply the electric power from one electric power source having a higher voltage, out of the main electric power source and the auxiliary electric power source, to at least the electric circuit of the control system among the electric power supply targets.
-
公开(公告)号：US12116063B2
公开(公告)日：2024-10-15
申请号：US17713403
申请日：2022-04-05
发明人： Masaharu Yamashita , Masataka Okuda , Yosuke Yamashita , Yuji Fujita , Yuuta Kajisawa , Kenichi Abe , Hiroki Tomizawa , Nobuyori Nakajima
CPC分类号： B62D6/02 , B62D5/0484 , B62D5/0496 , B62D6/008
摘要： A steer-by-wire steering system for a vehicle, including: an operating member operable by a driver; a steering device including an electric motor and configured to steer a wheel by a force generated by the electric motor; a controller configured to control the steering device, wherein the controller enables the wheel to be steered in accordance with an operation of the operating member while imposing limitation on a supply current to the electric motor, and wherein the limitation imposed on the supply current is made smaller when a running speed of the vehicle is lower than a set speed and a steering motion of the wheel is a motion in a direction to decrease a steering amount than i) when the running speed of the vehicle is not lower than the set speed and ii) when the steering motion of the wheel is a motion in a direction to increase the steering amount.
-
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.
-
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.
-
-
-
-
-
-
-
搜索结果
8 条记录 (耗时 0.021 秒)
