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公开(公告)号：US20230130839A1
公开(公告)日：2023-04-27
申请号：US17973737
申请日：2022-10-26
发明人： Yugo NAGASHIMA , Yuji FUJITA , Yuuta KAJISAWA , Kazuma HASEGAWA , Takashi KOUDAI , Masaharu YAMASHITA , Yosuke YAMASHITA , Shintaro TAKAYAMA , Hiroki TOMIZAWA
IPC分类号： B62D5/04
摘要： A steering control device includes a control circuit configured to control driving of a reaction force motor that generates steering reaction force applied to a steering wheel in which power transmission with turning wheels of a vehicle is separated. When a vehicle power source is turned on, the control circuit requests a vehicle control device to stop traveling of the vehicle when information is exchanged with the vehicle control device in a manner that does not follow a predetermined pattern.
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公开(公告)号：US20230119506A1
公开(公告)日：2023-04-20
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
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：US20230001983A1
公开(公告)日：2023-01-05
申请号：US17854834
申请日：2022-06-30
发明人： Masaharu YAMASHITA , Masataka OKUDA , Yosuke YAMASHITA , Yuji FUJITA , Yuuta KAJISAWA , Kenichi ABE , Nobuyori NAKAJIMA , Hiroki TOMIZAWA , Takeshi IWANA
摘要： A steer-by-wire steering system for a vehicle, including: an operating member operable by a driver; a dual-system steering device including two systems each of which includes an electric motor as a drive source, the steering device being configured to steer a wheel; and a controller configured to control a current to be supplied to each of the electric motors of the respective two systems so as to cause the steering device to steer the wheel in accordance with an operation of the operating member, wherein the controller is configured to prohibit the current greater than an upper limit value from being supplied to the electric motors of the respective two systems, and wherein, when the wheel is steered only by only one of the two systems, the controller raises the upper limit value of the current to be supplied to the electric motor of the one of the two systems.
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公开(公告)号：US20230131995A1
公开(公告)日：2023-04-27
申请号：US17970789
申请日：2022-10-21
发明人： Takashi KOUDAI , Yuji FUJITA , Yugo NAGASHIMA , Yuuta KAJISAWA , Kazuma HASEGAWA , Masaharu YAMASHITA , Yosuke YAMASHITA , Shintaro TAKAYAMA , Hiroki TOMIZAWA , Nobuyori NAKAJIMA
IPC分类号： B62D5/04
摘要： A steering control device includes a controller including a drive circuit that performs action for supplying, to a motor, electric power supplied by being connected to at least one of a first and a second power supply. When a connection state of the drive circuit is a state in which electric power is supplied from the first power supply, the connection state is switched by a power supply device to transition to a second state in which electric power is supplied from the second power supply when an abnormality of the first power supply is detected. Moreover, the controller starts an output limiting process of limiting torque outputtable by the motor as compared with before the abnormality of the first power supply is detected, after the abnormality is detected and before switching of the connection state is completed.
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公开(公告)号：US20230117373A1
公开(公告)日：2023-04-20
申请号：US17966325
申请日：2022-10-14
发明人： Yugo NAGASHIMA , Yuji FUJITA , Kazuma HASEGAWA , Yuuta KAJISAWA , Takashi KOUDAI , Masaharu YAMASHITA , Yosuke YAMASHITA , Shintaro TAKAYAMA , Kazuaki IIDA , Hiroyuki KATAYAMA , Hiroki TOMIZAWA , Nobuyori NAKAJIMA
摘要： A control device for a vehicle includes a plurality of control circuits configured to control a control object by starting in response to powering-on of a vehicle and to perform power latch control for continuing to be supplied with electric power in a predetermined period in response to powering-off of the vehicle. Each of the control circuits is configured to perform starting after all of the control circuits have recognized the powering-on of the vehicle in a case where the vehicle is powered on while the power latch control is being performed after the vehicle has been powered off.
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公开(公告)号：US20220169304A1
公开(公告)日：2022-06-02
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
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：US20230126878A1
公开(公告)日：2023-04-27
申请号：US17969785
申请日：2022-10-20
发明人： Takashi KOUDAI , Yuji FUJITA , Yugo NAGASHIMA , Yuuta KAJISAWA , Kazuma HASEGAWA , Yosuke YAMASHITA , Shintaro TAKAYAMA
IPC分类号： B62D5/04
摘要： A steering control device includes a controller configured to control driving of a motor that generates a torque. The torque is a torque applied to a steering mechanism of a vehicle using electric power from at least any one of an in-vehicle main power source and an auxiliary power source that backs up the main power source. The controller is configured to wait for the auxiliary power source to be charged to an extent that the main power source is able to be backed up and to permit the vehicle to travel when the controller is activated with an activation operation for the vehicle as a trigger and transitions to a state where control of the motor is executable.
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公开(公告)号：US20230001978A1
公开(公告)日：2023-01-05
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 , B62D5/04 , B60R16/033
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：US20230029564A1
公开(公告)日：2023-02-02
申请号：US17873652
申请日：2022-07-26
IPC分类号： B62D5/04 , B60R16/033 , G01R19/165
摘要： A steer-by-wire steering system includes: a steering device including a steering motor powered by a main power source and/or a backup power source; and a controller configured to control the steering device based on a steering request. When the backup power source is normal, the controller executes an abnormal-situation control based on electric power supplied to the steering motor by the main power source and/or the backup power source when the controller determines that the voltage of the main power source is less than a first threshold. When the backup power source is abnormal, the controller executes the abnormal-situation control based on electric power supplied to the steering motor by the main power source when the controller determines that the voltage of the main power source is less than a second threshold that is greater than the first threshold.
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公开(公告)号：US20230026250A1
公开(公告)日：2023-01-26
申请号：US17868529
申请日：2022-07-19
申请人： JTEKT CORPORATION
发明人： Yuuta KAJISAWA , Yuji FUJITA , Kenichi ABE , Toshihiro TAKAHASHI , Toshiaki OYA , Yoshinobu SHIMIZU , Masahiko SAKAMAKI , Shintaro TAKAYAMA , Yosuke YAMASHITA , Masaharu YAMASHITA
IPC分类号： B62D5/00 , B60R25/021 , B60R25/0215 , B62D5/04
摘要： A steering system is configured such that electric power is supplied to a steering actuator and a turning actuator from a first power supply when a power state of a vehicle is an on state and supply of the electric power from the first power supply is cut off when the power state is an off state. The steering system includes a rotation curbing unit configured to operate such that rotation of the steering wheel is curbed in at least a part of a first power-off period from when the power state becomes an off state until when the power state becomes the on state next, as an operating period, and a second power supply configured to supply, to the rotation curbing unit, the electric power required for operation of the rotation curbing unit in the operating period, the second power supply being different from the first power supply.
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