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公开(公告)号：EP4209404A1
公开(公告)日：2023-07-12
申请号：EP22208234.9
申请日：2022-11-18
发明人： ISHINO, Takahito , YAMASHITA, Masaharu , SHIBATA, Kenji , YAMASHITA, Yosuke , TAKAYAMA, Shintaro , IIDA, Kazuaki , YAMAZAKI, Ryo , KAJISAWA, Yuuta , ABE, Kenichi , HAYASHI, Toyohiro , NAKAJIMA, Nobuyori , OTAKE, Hiroyasu , TAZUKE, Kurumi , TOMIZAW, Hiroki
IPC分类号： B62D5/00
摘要： A steer-by-wire steering system including a steering device (3) including a steering motor (35) and a controller (5) configured to supply a steering current to the steering motor (35) based on a steering request. The controller (5) includes a plurality of calculating portions (51, 54, 57), a plurality of drive circuits (52, 55, 58), and a plurality of temperature sensors (53, 56, 59). When a detection temperature difference that is a difference between detection temperatures of any two of the plurality of temperature sensors (53, 56, 59) is greater than a predetermined threshold, each of the plurality of calculating portions (51, 54, 57) 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 (53, 56, 59) corresponding to itself, irrespective of detection temperatures of one or more of the plurality of temperature sensors (53, 56, 59) other than the one of the plurality of temperature sensors (53, 56, 59) corresponding to itself.
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公开(公告)号：EP4173900A1
公开(公告)日：2023-05-03
申请号：EP22203900.0
申请日：2022-10-26
发明人： NAGASHIMA, Yugo , FUJITA, Yuji , KAJISAWA, Yuuta , HASEGAWA, Kazuma , KOUDAI, Takashi , YAMASHITA, Masaharu , YAMASHITA, Yosuke , TAKAYAMA, Shintaro , TOMIZAWA, Hiroki
IPC分类号： B60R25/20
摘要： A steering control device includes a control circuit configured to control driving of a reaction force motor (21) that generates steering reaction force applied to a steering wheel (11) in which power transmission with turning wheels (15) of a vehicle is separated. When a vehicle power source is turned on, the control circuit requests a vehicle control device (60) to stop traveling of the vehicle when information is exchanged with the vehicle control device (60) in a manner that does not follow a predetermined pattern.
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公开(公告)号：EP3971056A2
公开(公告)日：2022-03-23
申请号：EP21193190.2
申请日：2021-08-26
发明人： KAJISAWA, Yuuta , SATO, Fumihiko , YAMASHITA, Masaharu , SATOU, Atsushi , OKUDA, Masataka , MIKIDA, Toshiyuki , HANZAWA, Hiroaki
IPC分类号： B62D5/04
摘要： An electric power source device (5) includes an auxiliary electric power source (41) for a main electric power source (6) that supplies electric power to electric power supply targets, including an electric circuit (52) of a control system for controlling a specific control target and an electric circuit (51) of a power system that requires larger electric power than the electric circuit (52) of the control system; and a selection circuit configured to supply the electric power from one electric power source having a higher voltage, out of the main electric power source (6) and the auxiliary electric power source (41), to at least the electric circuit (52) of the control system among the electric power supply targets.
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公开(公告)号：EP4309976A1
公开(公告)日：2024-01-24
申请号：EP23186285.5
申请日：2023-07-19
申请人： JTEKT Corporation
发明人： KOUDAI, Takashi , FUJITA, Yuji , NAGASHIMA, Yugo , HASEGAWA, Kazuma , KAJISAWA, Yuuta , YAMASHITA, Masaharu , SATOU, Atsushi , YAMASHITA, Yosuke , IIDA, Kazuaki , TAKAYAMA, Shintaro , IWANA, Takeshi , HAYASHI, Toyohiro , TANABE, Hayaki , NAKAJIMA, Nobuyori , TOMIZAWA, Hiroki
摘要： A steering control system that controls a steering device (2) 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 (2) 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：EP4296106A1
公开(公告)日：2023-12-27
申请号：EP23180511.0
申请日：2023-06-21
发明人： KAJISAWA, Yuuta , FUJITA, Yuji , HASEGAWA, Kazuma , NAGASHIMA, Yugo , KOUDAI, Takashi , INABA, Daiki , YAMASHITA, Masaharu , SATOU, Atsushi , YAMASHITA, Yosuke , IIDA, Kazuaki , KATAYAMA, Hiroyuki , TAKAYAMA, Shintaro , HAYASHI, Toyohiro , IWANA, Takeshi , TANABE, Hayaki , NAKAJIMA, Nobuyori , TOMIZAWA, Hiroki
摘要： An electric power source apparatus includes a drive control apparatus (20) and an auxiliary control apparatus (50). The drive control apparatus (20) and the auxiliary control apparatus (50) are configured to communicate with each other. When one of the drive control apparatus (20) and the auxiliary control apparatus (50) is a first control apparatus and the other of the drive control apparatus (20) and the auxiliary control apparatus (50) 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：EP4219270A1
公开(公告)日：2023-08-02
申请号：EP23153252.4
申请日：2023-01-25
发明人： KOUDAI, Takashi , FUJITA, Yuji , NAGASHIMA, Yugo , HASEGAWA, Kazuma , KAJISAWA, Yuuta , TAKAYAMA, Shintaro , KATAYAMA, Hiroyuki , YAMASHITA, Yosuke , YAMASHITA, Masaharu
摘要： A steering control device (1) includes a control unit (60). The control unit (60) is configured to execute a control angle calculation process, an angle feedback process, and a standard value adjustment process. The control angle calculation process is a process of calculating a control angle as an absolute angle relative to a standard value, and the angle feedback process is a process of performing feedback control on the control angle, and the standard value adjustment process is a process of adjusting the stored standard value. The standard value adjustment process includes a process of, when, in a straight-ahead state, the control angle deviates from a value showing the straight-ahead state, adjusting the standard value such that the deviation of the control angle from the value showing the straight-ahead state decreases.
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公开(公告)号：EP4169806A1
公开(公告)日：2023-04-26
申请号：EP22202946.4
申请日：2022-10-21
发明人： KOUDAI, Takashi , FUJITA, Yuji , NAGASHIMA, Yugo , KAJISAWA, Yuuta , HASEGAWA, Kazuma , YAMASHITA, Masaharu , YAMASHITA, Yosuke , TAKAYAMA, Shintaro , TOMIZAWA, Hiroki , NAKAJIMA, Nobuyori
IPC分类号： B62D5/04
摘要： A steering control device (1) includes a controller including a drive circuit (61a) 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 (61a) is a state in which electric power is supplied from the first power supply, the connection state is switched by a power supply device (80) 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：EP4008606A2
公开(公告)日：2022-06-08
申请号：EP21211628.9
申请日：2021-12-01
申请人： JTEKT CORPORATION
发明人： HASEGAWA, Kazuma , TAKAHASHI, Toshihiro , FUJITA, Yuji , ABE, Kenichi , NAGASHIMA, Yugo , KAJISAWA, Yuuta , KOUDAI, Takashi , HANZAWA, Hiroaki , SATOU, Atsushi , YAMASHITA, Yosuke , TAKAYAMA, Shintaro , HIBINO, Tokuaki
IPC分类号： B62D5/04
摘要： A power supply system includes a system control unit, an auxiliary power supply (121), 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：EP4375162A1
公开(公告)日：2024-05-29
申请号：EP23203241.7
申请日：2023-10-12
发明人： MATSUMOTO, Taiki , ABE, Kenichi , KAJISAWA, Yuuta , NAGASHIMA, Yugo , HASEGAWA, Kazuma , KOUDAI, Takashi , YAMASHITA, Yosuke , TAKAYAMA, Shintaro , KATAYAMA, Hiroyuki , YAMASHITA, Masaharu
摘要： A steering control device configured to control a steering device, the steering device including a steering shaft (12) to which a handle (11) is detachably coupled and a motor configured to generate torque that is given to the steering shaft (12). The steering control device includes a processing circuit configured to execute a process for controlling driving of the motor. The process for controlling the driving of the motor includes a lock process of driving the motor such that a rotation position of the steering shaft (12) is fixed at a specific position, in a state where the handle (11) has been detached from the steering shaft (12).
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公开(公告)号：EP4309973A1
公开(公告)日：2024-01-24
申请号：EP23183827.7
申请日：2023-07-06
申请人： JTEKT Corporation
发明人： NAGASHIMA, Yugo , FUJITA, Yuji , KAJISAWA, Yuuta , HASEGAWA, Kazuma , KOUDAI, Takashi , YAMASHITA, Masaharu , SATOU, Atsushi , YAMASHITA, Yosuke , IIDA, Kazuaki , TAKAYAMA, Shintaro , HAYASHI, Toyohiro , TOMIZAWA, Hiroki , NAKAJIMA, Nobuyori , TANABE, Hayaki , IWANA, Takeshi
摘要： A steering control system includes a plurality of control circuits configured to control a reaction force motor (21) and a turning motor (31) in coordination with one another, the reaction force motor (21) generating a steering reaction force applied to a steering wheel (11) from which power transmission to turning wheels (15) of a vehicle is cut off, the turning motor (31) generating a turning force for turning the turning wheels (15). 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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