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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：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：EP4215421A1
公开(公告)日：2023-07-26
申请号：EP21869232.5
申请日：2021-09-06
发明人： UCHIDA, Takayuki , YAMASHITA, Yosuke , TAKAYAMA, Shintaro , IIDA, Kazuaki , YAMASHITA, Masaharu , HASEGAWA, Kazuma , FUJITA, Yuji , ABE, Kenichi , KAJISAWA, Yuuta , NAGASHIMA, Yugo
IPC分类号： B60R25/0215 , E05B83/00 , B62D5/04
摘要： A steering control device is applied to a steer-by-wire system (901) in which a steering mechanism and a turning mechanism are mechanically separated, or an electric power steering system (902) in which the steering mechanism and the turning mechanism are mechanically coupled. A steering control device (201) applied to the steer-by-wire system (901) controls a drive of a steering motor (78) that functions as a reaction motor that applies reaction torque to a steering wheel (91). A steering wheel lock calculating unit (75) of the steering control device (201) performs a steering wheel lock drive control for calculating a drive command so as to output a lock torque for maintaining a rotation stop state of the steering wheel by energizing the steering motor (78) when a predetermined condition is satisfied while a vehicle is parked or stopped. A power converter (77) converts power supply electric power according to the drive command calculated by the steering wheel lock calculating unit (75) and supplies the electric power to the steering motor.
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公开(公告)号：EP4116172A1
公开(公告)日：2023-01-11
申请号：EP22181555.8
申请日：2022-06-28
发明人： YAMASHITA, Masaharu , OKUDA, Masataka , YAMASHITA, Yosuke , FUJITA, Yuji , KAJISAWA, Yuuta , ABE, Kenichi , NAKAJIMA, Nobuyori , TOMIZAWA, Hiroki , IWANA, Takeshi
摘要： A steer-by-wire steering system for a vehicle, including: an operating member (20) operable by a driver; a dual-system steering device (14, 14a, 14b) including two systems each of which includes an electric motor (50, 50a, 50b) as a drive source, the steering device (14, 14a, 14b) being configured to steer a wheel (10); and a controller (62, 62a, 62b) configured to control a current to be supplied to each of the electric motors (50, 50a, 50b) of the respective two systems so as to cause the steering device (14, 14a, 14b) to steer the wheel (10) in accordance with an operation of the operating member (20), wherein the controller (62, 62a, 62b) is configured to prohibit the current greater than an upper limit value from being supplied to the electric motors (50, 50a, 50b) of the respective two systems, and wherein, when the wheel (10) is steered by only one of the two systems, the controller (62, 62a, 62b) raises the upper limit value of the current to be supplied to the electric motor (50, 50a, 50b) of the one of the two systems.
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公开(公告)号：EP4166422A3
公开(公告)日：2023-07-26
申请号：EP22201287.4
申请日：2022-10-13
发明人： NAGASHIMA, Yugo , FUJITA, Yuji , HASEGAWA, Kazuma , KAJISAWA, Yuuta , KOUDAI, Takashi , YAMASHITA, Masaharu , YAMASHITA, Yosuke , TAKAYAMA, Shintaro , IIDA, Kazuaki , KATAYAMA, Hiroyuki , TOMIZAWA, Hiroki , NAKAJIMA, Nobuyori
摘要： A control device for a vehicle includes a plurality of control circuits (41A, 42A, 51A, 52A) 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 (41A, 42A, 51A, 52A) is configured to perform starting after all of the control circuits (41A, 42A, 51A, 52A) 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：EP4166422A2
公开(公告)日：2023-04-19
申请号：EP22201287.4
申请日：2022-10-13
发明人： NAGASHIMA, Yugo , FUJITA, Yuji , HASEGAWA, Kazuma , KAJISAWA, Yuuta , KOUDAI, Takashi , YAMASHITA, Masaharu , YAMASHITA, Yosuke , TAKAYAMA, Shintaro , IIDA, Kazuaki , KATAYAMA, Hiroyuki , TOMIZAWA, Hiroki , NAKAJIMA, Nobuyori
IPC分类号： B62D5/04
摘要： A control device for a vehicle includes a plurality of control circuits (41A, 42A, 51A, 52A) 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 (41A, 42A, 51A, 52A) is configured to perform starting after all of the control circuits (41A, 42A, 51A, 52A) 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：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：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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