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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：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：US20230219618A1
公开(公告)日：2023-07-13
申请号：US18067487
申请日：2022-12-16
发明人： Takahito ISHINO , Masaharu YAMASHITA , Kenji SHIBATA , Yosuke YAMASHITA , Shintaro TAKAYAMA , Kazuaki IIDA , Ryo YAMAZAKI , Yuuta KAJISAWA , Kenichi ABE , Toyohiro HAYASHI , Nobuyori NAKAJIMA , Hiroyasu OTAKE , Kurumi TAZUKE , Hiroki TOMIZAWA
CPC分类号： B62D5/0496 , B62D5/046 , H02P29/68 , H02P23/14
摘要： A steer-by-wire steering system including a steering device including a steering motor and a controller configured to supply a steering current to the steering motor based on a steering request. The controller includes a plurality of microcomputers, a plurality of drive circuits, and a plurality of temperature sensors. When a detection temperature difference that is a difference between detection temperatures of any two of the plurality of temperature sensors is greater than a predetermined threshold, each of the plurality of microcomputers executes an independent calculation control to independently calculate and set a current limit value, which is an upper limit value of the steering current, based on a detection temperature of one of the plurality of temperature sensors corresponding to itself, irrespective of detection temperatures of one or more of the plurality of temperature sensors other than the one of the plurality of temperature sensors corresponding to itself.
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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：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：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：US20240001949A1
公开(公告)日：2024-01-04
申请号：US18215491
申请日：2023-06-28
发明人： Yugo NAGASHIMA , Yuji FUJITA , Yuuta KAJISAWA , Kazuma HASEGAWA , Takashi KOUDAI , Masaharu YAMASHITA , Atsushi SATOU , Yosuke YAMASHITA , Hiroyuki KATAYAMA , Shintaro TAKAYAMA , Toyohiro HAYASHI , Hiroki TOMIZAWA , Nobuyori NAKAJIMA , Hayaki TANABE , Takeshi IWANA
CPC分类号： B60W50/12 , B62D15/029 , B62D15/021 , B60W2520/28
摘要： A vehicle control device includes a driving control device configured to be supplied with electricity through a first power line and configured to execute a first process, and a steering control device configured to be supplied with electricity through a second power line and configured to execute a second process. The steering control device is configured such that, in a case where it is determined that power supply through the second power line has stopped during travel, when it is determined that the driving control device is not in a state of being able to execute the first process, the steering control device permits execution of the second process to stop, whereas when it is determined that the driving control device is in a state of being able to execute the first process, the steering control device does not permit execution of the second process to stop.
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公开(公告)号：US20230415586A1
公开(公告)日：2023-12-28
申请号：US18339700
申请日：2023-06-22
发明人： Yuuta KAJISAWA , Yuji FUJITA , Yugo NAGASHIMA , Kazuma HASEGAWA , Takashi KOUDAI , Masaharu YAMASHITA , Atsushi SATOU , Yosuke YAMASHITA , Kazuaki IIDA , Hiroyuki KATAYAMA , Shintaro TAKAYAMA , Toyohiro HAYASHI , Takeshi IWANA , Hayaki TANABE , Nobuyori NAKAJIMA , Hiroki TOMIZAWA
摘要： A power supply device includes a driving control device and an auxiliary control device, the vehicle including a main power source, an auxiliary power source, and a supply path, the supply path being a path configured to be opened and closed according to a state of a start switch of the vehicle. The driving control device is a device that controls a state of equipment installed in the vehicle and the auxiliary control device is a device that controls a state of the auxiliary power source. The driving control device is configured to execute a storage process, a permission signal transmission process, and an initial value process, and the auxiliary control device is configured to execute a permission signal reception process and a stop process.
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公开(公告)号：US20230365187A1
公开(公告)日：2023-11-16
申请号：US18142407
申请日：2023-05-02
发明人： Kazuma HASEGAWA , Yuji FUJITA , Yuuta KAJISAWA , Yugo NAGASHIMA , Takashi KOUDAI , Masaharu YAMASHITA , Atsushi SATOU , Yosuke YAMASHITA , Kazuaki IIDA , Hiroyuki KATAYAMA , Shintaro TAKAYAMA , Toyohiro HAYASHI , Hiroki TOMIZAWA , Nobuyori NAKAJIMA
IPC分类号： B62D5/04
CPC分类号： B62D5/0484 , B62D5/0463 , B62D5/049
摘要： A vehicle control device includes: dual-system control circuits that control power supply to dual-system winding sets of a motor; and dual-system rotation detection circuits. The control circuits calculate an absolute rotation angle of the motor, and, when a power source is turned off, store an absolute rotation angle of the motor at that time. The control circuits start when the power source is turned on and the absolute value of a difference between an absolute rotation angle that was stored when the power source was turned off last time and an absolute rotation angle that is calculated when the power source is turned on this time is equal to or smaller than a given threshold value, regardless of whether an abnormality has occurred in one of the dual-system rotation detection circuits or an abnormality of the dual-system rotation detection circuits is not determinable.
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