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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：US20240132147A1
公开(公告)日：2024-04-25
申请号：US18485710
申请日：2023-10-11
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：US20240025473A1
公开(公告)日：2024-01-25
申请号：US18222122
申请日：2023-07-14
发明人： Takashi KOUDAI , Yuji FUJITA , Yugo NAGASHIMA , Kazuma HASEGAWA , Yuuta KAJISAWA , Masaharu YAMASHITA , Atsushi SATOU , Yosuke YAMASHITA , Kazuaki IIDA , Shintaro TAKAYAMA , Takeshi IWANA , Toyohiro HAYASHI , Hayaki TANABE , Nobuyori NAKAJIMA , Hiroki TOMIZAWA
IPC分类号： B62D5/04
CPC分类号： B62D5/0481
摘要： A steering control system that controls a steering device of a vehicle includes a storage unit, and a control unit configured to make a state transition to a normal control state via a start-up state after a power source system of the vehicle is started. In the start-up state, the control unit executes a correction information storing process of acquiring correction element information using a state variable obtained from the steering device and writing correction information obtained based on the correction element information into the storage unit. In the start-up state, the control unit is configured to execute an abnormal condition determination process of determining whether an abnormal condition indicating that the correction information is abnormal is met. The correction information storing process is re-executed when the abnormal condition is met. The abnormal condition determination process is executed at least either before or after the correction information storing process.
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公开(公告)号：US20230415758A1
公开(公告)日：2023-12-28
申请号：US18340330
申请日：2023-06-23
发明人： Yuuta KAJISAWA , Yuji FUJITA , Kazuma HASEGAWA , Yugo NAGASHIMA , Takashi KOUDAI , Daiki INABA , Masaharu YAMASHITA , Atsushi SATOU , Yosuke YAMASHITA , Kazuaki IIDA , Hiroyuki KATAYAMA , Shintaro TAKAYAMA , Toyohiro HAYASHI , Takeshi IWANA , Hayaki TANABE , Nobuyori NAKAJIMA , Hiroki TOMIZAWA
IPC分类号： B60W50/023 , B60W50/02 , B60W50/14
CPC分类号： B60W50/023 , B60W50/0205 , B60W50/14
摘要： An electric power source apparatus includes a drive control apparatus and an auxiliary control apparatus. The drive control apparatus and the auxiliary control apparatus are configured to communicate with each other. When one of the drive control apparatus and the auxiliary control apparatus is a first control apparatus and the other of the drive control apparatus and the auxiliary control apparatus is a second control apparatus, the first control apparatus is configured to continue a function to communicate with the second control apparatus even when the first control apparatus is not able to normally communicate with the second control apparatus, and configured to execute communication with the second control apparatus when the first control apparatus is put into a state where the first control apparatus is able to normally communicate with the second control apparatus.
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公开(公告)号：US20230125769A1
公开(公告)日：2023-04-27
申请号：US17972017
申请日：2022-10-24
发明人： Kazuma HASEGAWA , Yuji FUJITA , Takashi KODERA , Isao NAMIKAWA , Atsushi ISHIHARA , Masaharu YAMASHITA , Kenji SHIBATA , Yuko GOTO , Hiroki TOMIZAWA , Nobuyori NAKAJIMA
IPC分类号： B60W30/182 , B60W50/08 , B60W50/029 , B60W50/02 , B60W10/20
摘要： A control device includes control circuits of a plurality of systems. When a transition condition is established, the control circuits of the systems make transition of a driving mode from a first driving mode to a second driving mode, and when a return condition is established in a state in which the driving mode has transitioned to the second driving mode, the control circuits of the systems make transition of the driving mode from the second driving mode to the first driving mode while gradually changing the current command values of the control circuits’ own systems toward the current command values before the adjustment.
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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：US20230033288A1
公开(公告)日：2023-02-02
申请号：US17872508
申请日：2022-07-25
发明人： Satoshi MATSUDA , Isao NAMIKAWA , Koji ANRAKU , Tomoyuki IIDA , Masaharu YAMASHITA , Kenji SHIBATA
摘要： A steering control device includes a base axial force calculator, a limiting axial force calculator, and a final axial force calculator. The limiting axial force calculator includes a steering angle holder, a reference angle calculator, a final difference calculator, and an axial force calculator. The steering angle holder is configured to hold a steering angle at the time of limiting a turning operation of the turning wheels when the turning operation is limited. The reference angle calculator is configured to calculate a reference angle. The final difference calculator is configured to calculate a final difference which is a final difference between the reference angle and the current steering angle. The axial force calculator is configured to calculate a limiting axial force based on a value of the final difference.
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公开(公告)号：US20170203783A1
公开(公告)日：2017-07-20
申请号：US15409043
申请日：2017-01-18
CPC分类号： B62D5/0403 , B62D3/12 , B62D5/0448 , B62D5/0463 , B62D6/10
摘要： The steering apparatus includes a first seal member and a second seal member. The first seal member is fixed to one of an outer peripheral surface of a rack shaft and an inner peripheral surface of a housing. The first seal member slidably contacts with a cylindrical surface which is centered on the axis and is provided on the other of the outer peripheral surface of the rack shaft and the inner peripheral surface of the housing. The second seal member is fixed to the other of the outer peripheral surface and the inner peripheral surface. The second seal member slidably contacts with a cylindrical surface which is centered on the axis and is provided on the one of the outer peripheral surface of the rack shaft and the inner peripheral surface of the housing.
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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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