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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
Applicant: JTEKT CORPORATION , TOYOTA JIDOSHA KABUSHIKI KAISHA , DENSO CORPORATION
Inventor： 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 classification number: B60W50/12 , B62D15/029 , B62D15/021 , B60W2520/28
Abstract: 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
Applicant: JTEKT CORPORATION , TOYOTA JIDOSHA KABUSHIKI KAISHA , DENSO CORPORATION
Inventor： 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
Abstract: 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
Applicant: JTEKT CORPORATION , TOYOTA JIDOSHA KABUSHIKI KAISHA , DENSO CORPORATION
Inventor： 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: B62D5/04
CPC classification number: B62D5/0484 , B62D5/0463 , B62D5/049
Abstract: 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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公开(公告)号：US20190248407A1
公开(公告)日：2019-08-15
申请号：US16267743
申请日：2019-02-05
Applicant: DENSO CORPORATION
Inventor： Koichi NAKAMURA , Nobuyori NAKAJIMA , Go ENDOH , Yosuke OGI , Atsuko OKA
IPC: B62D5/04
CPC classification number: B62D5/0463 , B62D5/0481
Abstract: A steering control apparatus controlling an electric power steering apparatus includes a first control part and a second control part. The first control part communicates with an external device and executes a specific process. The second control part communicates with the first control part and executes the specific process. The first control part can acquire first information and second information. When all of the first information and the second information are positive, the first control part transmits positive information to the external device. When a part of the first information and the second information is negative, the first control part transmits negative information to the external device.
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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
Applicant: JTEKT CORPORATION , TOYOTA JIDOSHA KABUSHIKI KAISHA , DENSO CORPORATION
Inventor： 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 classification number: B62D5/0421 , B62D5/006 , B62D15/0245 , B62D5/0466 , B62D5/0403
Abstract: 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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Patent Agency Ranking
公开(公告)号：US20230219618A1
公开(公告)日：2023-07-13
申请号：US18067487
申请日：2022-12-16
Applicant: Toyota Jidosha Kabushiki Kaisha , JTEKT CORPORATION , DENSO CORPORATION
Inventor： 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 classification number: B62D5/0496 , B62D5/046 , H02P29/68 , H02P23/14
Abstract: 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
Applicant: JTEKT CORPORATION , TOYOTA JIDOSHA KABUSHIKI KAISHA , DENSO CORPORATION
Inventor： Takashi KOUDAI , Yuji FUJITA , Yugo NAGASHIMA , Yuuta KAJISAWA , Kazuma HASEGAWA , Masaharu YAMASHITA , Yosuke YAMASHITA , Shintaro TAKAYAMA , Hiroki TOMIZAWA , Nobuyori NAKAJIMA
IPC: B62D5/04
Abstract: 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
Applicant: JTEKT CORPORATION , TOYOTA JIDOSHA KABUSHIKI KAISHA , DENSO CORPORATION
Inventor： Yugo NAGASHIMA , Yuji FUJITA , Kazuma HASEGAWA , Yuuta KAJISAWA , Takashi KOUDAI , Masaharu YAMASHITA , Yosuke YAMASHITA , Shintaro TAKAYAMA , Kazuaki IIDA , Hiroyuki KATAYAMA , Hiroki TOMIZAWA , Nobuyori NAKAJIMA
Abstract: 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：US20200207406A1
公开(公告)日：2020-07-02
申请号：US16711857
申请日：2019-12-12
Applicant: DENSO CORPORATION
Inventor： Go ENDOH , Nobuyori NAKAJIMA , Koichi NAKAMURA , Hiroyasu OTAKE
Abstract: Each of a plurality of microcomputers outputs a motor drive signal, which is generated based on a current command value and a current limit value as a control amount command value and a control amount limit value, to each motor drive circuit. When an OFF determination of an own microcomputer is made, each microcomputer executes first end processing as a first stage of end processing and transmits an OFF determination signal to the other microcomputer. When the OFF determination signal is received from the other microcomputer, each microcomputer determines that the OFF determination has been made and starts second end processing which gradually decreases the current command value or the current control limit value from a present value. When the second end processing is completed and power-off preparation of the own microcomputer and the other microcomputer is completed, each microcomputer executes final end processing for turning off the power supply relay.
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公开(公告)号：US20200180685A1
公开(公告)日：2020-06-11
申请号：US16702912
申请日：2019-12-04
Applicant: DENSO CORPORATION
Inventor： Takashi SUZUKI , Shuji KURAMITSU , Nobuyori NAKAJIMA , Go ENDOH , Haruo SUZUKI , Koichi NAKAMURA , Yosuke OGI , Atsuko OKA
Abstract: A steering system in a vehicle includes a plurality of subsystems provided with a control unit. The control unit includes a storage unit storing steer angle information regarding a steer angle of one of a steering mechanism and a steered mechanism when the steering mechanism or the steered mechanism stops, an abnormality determiner determining abnormality of the motor rotation detection value and the detection circuit in the plurality of subsystems at a start time of a motor based on a comparison of at least two parameters, and a steer angle calculator calculating the steer angle based on the parameters having been determined by the abnormality determiner as not abnormal.
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