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公开(公告)号：US20240010269A1
公开(公告)日：2024-01-11
申请号：US18348794
申请日：2023-07-07
发明人： Yugo NAGASHIMA , Yuji FUJITA , Yuuta KAJISAWA , Kazuma HASEGAWA , Takashi KOUDAI , Masaharu YAMASHITA , Atsushi SATOU , Yosuke YAMASHITA , Kazuaki IIDA , Shintaro TAKAYAMA , Toyohiro HAYASHI , Hiroki TOMIZAWA , Nobuyori NAKAJIMA , Hayaki TANABE , Takeshi IWANA
CPC分类号： B62D5/0421 , B62D5/006 , B62D15/0245 , B62D5/0466 , B62D5/0403
摘要： A steering control system includes a plurality of control circuits configured to control a reaction force motor and a turning motor in coordination with one another, the reaction force motor generating a steering reaction force applied to a steering wheel from which power transmission to turning wheels of a vehicle is cut off, the turning motor generating a turning force for turning the turning wheels. When at least one control circuit among the control circuits that are operating normally is reset, the reset control circuit is configured to execute a process for stopping travel of the vehicle upon restarting after completion of the reset.
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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：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：US20240010267A1
公开(公告)日：2024-01-11
申请号：US18346639
申请日：2023-07-03
发明人： Kaishi MONOBE , Yuji FUJITA , Kazuma HASEGAWA , Yuuta KAJISAWA , Yugo NAGASHIMA , Takashi KOUDAI , Kenichi ABE , Masaharu YAMASHITA , Atsushi SATOU , Yosuke YAMASHITA , Kazuaki IIDA , Shintaro TAKAYAMA , Toyohiro HAYASHI , Hiroki TOMIZAWA , Nobuyori NAKAJIMA , Hayaki TANABE , Takeshi IWANA
CPC分类号： B62D5/006 , B62D5/0466 , B62D6/008
摘要： A steering control device includes a first reaction force control circuit and a second reaction force control circuit. Each of the first reaction force control circuit and the second reaction force control circuit are configured to control a reaction force motor, to execute, at a starting time, a preparation process including a process that requires the steering wheel to automatically rotate through the reaction force motor, and to store, at a time of execution completion of the preparation process, information indicating whether the preparation process has been normally completed. In a case where the first reaction force control circuit has been reset, when the information indicates that the preparation process has been normally completed, the first reaction force control circuit that has been rest is configured to not execute the preparation process at a time of restarting after completion of the reset.
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公开(公告)号：US20230339537A1
公开(公告)日：2023-10-26
申请号：US18304666
申请日：2023-04-21
发明人： Yosuke YAMASHITA , Masaharu YAMASHITA , Kenji SHIBATA , Koichi NISHIMURA , Takahito ISHINO , Toru TAKASHIMA , Shintaro TAKAYAMA , Yuji FUJITA , Koji ANRAKU , Kenichi ABE
摘要： A steering control device is configured to control a steering device that changes a transmission ratio between an operation angle of an operation member and a steering angle of a steerable wheel. The steering control device includes: communication lines for transmitting vehicle speed information; and calculators communicably connected to each other and individually connected to the communication lines. Each calculator calculates the transmission ratio based on the vehicle speed information received via a corresponding one of the communication lines and determines whether the received vehicle speed information is valid. When at least one of the calculators determines that the vehicle speed information is not valid, each calculator changes control for calculating the transmission ratio from a vehicle-speed responsive control in which the transmission ratio is calculated based on the vehicle speed information to a specific control in which the transmission ratio is calculated not based on the vehicle speed information.
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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：US20240025471A1
公开(公告)日：2024-01-25
申请号：US18354743
申请日：2023-07-19
发明人： Takashi KOUDAI , Yuji FUJITA , Kenichi ABE , Yugo NAGASHIMA , Kazuma HASEGAWA , Yuuta KAJISAWA , Masaharu YAMASHITA , Shintaro TAKAYAMA , Takeshi IWANA , Hiroki TOMIZAWA , Toyohiro HAYASHI , Hayaki TANABE , Nobuyori NAKAJIMA
IPC分类号： B62D5/04
CPC分类号： B62D5/046
摘要： A vehicle control unit includes a controller configured to make a state transition to a normal control state via a start-up state after a power source system of a vehicle is started. The start-up state is a state where it is possible to execute a preparation process, required for making a state transition to the normal control state, by controlling an operation member so as to move automatically. The controller is configured to execute, in the start-up state: a forced-ending condition determination process of determining whether a forced-ending condition showing that the preparation process being executed is to be forcedly ended from start of execution of the preparation process is met; a forced-ending process of forcedly ending the preparation process being executed when the forced-ending condition is met; and a notification process of notifying the driver of forced ending of the preparation process.
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公开(公告)号：US20240227923A9
公开(公告)日：2024-07-11
申请号：US18485710
申请日：2023-10-12
发明人： Yuuta KAJISAWA , Yuji FUJITA , Yugo NAGASHIMA , Kazuma HASEGAWA , Takashi KOUDAI , Kaishi MONOBE , Kenichi ABE , Masaharu YAMASHITA , Shintaro TAKAYAMA , Kazuaki IIDA , Yasushi HORA , Yosuke YAMASHITA , Hiroki TOMIZAWA , Nobuyori NAKAJIMA , Hayaki TANABE , Toyohiro HAYASHI , Takeshi IWANA
CPC分类号： B62D5/0484 , B62D5/046 , H02P23/00
摘要： A vehicle power supply system includes a power source control device that executes a process of switching a connection state of a driving circuit to the main power source and an auxiliary power source including; a process of switching the connection state so as to transition to a backup state as a voltage decrease of the main power source occurs, and a process of switching the connection state so as to transition to a normal state as the voltage decrease of the main power source is resolved. After a voltage decrease of the main power source occurs, a turning-side control device of a steering control unit sets an output-limited state for a turning-side motor. The output-limited state is canceled upon the power source control device completing switching of the connection state so as to transition.
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公开(公告)号：US20240088814A1
公开(公告)日：2024-03-14
申请号：US18511618
申请日：2023-11-16
发明人： Hiroki TOMIZAWA , Nobuyori NAKAJIMA , Tomoaki YOSHIMI , Toyohiro HAYASHI , Yosuke YAMASHITA , Shintaro TAKAYAMA , Yuuta KAJISAWA , Yuji FUJITA
CPC分类号： H02P27/06 , B62D5/0484 , H02J9/062 , B62D5/006
摘要： When a DC power source fails, the following controls are performed. The normal control is resumed when an inverter input voltage recovers before a standby period elapses after a power failure time. A power source relay is turned off when the standby period elapses without recovery of the voltage. The power source relay is turned on again when a power source relay off period has elapsed from a turn-off time. The normal control is resumed when the inverter input voltage recovers at the turn-on time. The normal control is resumed when the inverter input voltage recovers before the power source relay on period elapses from the turn-on time. The power source relay is turned off, and driving of the actuator is stopped, when the power source relay on period passes without recovery of the voltage.
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