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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：EP4151503A1
公开(公告)日：2023-03-22
申请号：EP22197059.3
申请日：2021-09-21
发明人： KODERA, Takashi , TAKASHIMA, Toru
摘要： A steering control device (50) controls a reaction motor that generates a steering reaction force applied to a steering wheel of which power transmission to and from turning wheels is cut off. the steering control device (50) includes: a first processor (101) configured to change a virtual operation range of the steering wheel according to a steering state or a vehicle state by controlling the reaction motor; and a second processor configured to change a degree of change of the virtual operation range of the steering wheel according to the steering state or the vehicle state when an operation position of the steering wheel reaches a position in a vicinity of a limit position of the virtual operation range.
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公开(公告)号：EP4140856A1
公开(公告)日：2023-03-01
申请号：EP22191013.6
申请日：2022-08-18
申请人： JTEKT CORPORATION
摘要： A steer-by-wire steering system for a vehicle, comprising: an operation member (10) operable by a vehicle driver; an urging device (12) configured to generate an urging force to urge the operation member (10); a steering device (18) configured to steer a wheel (16); and a controller (22) configured to control the urging device (12) and the steering device (18). In a normal operation, the controller (22) enables the wheel (16) to be steered in accordance with an operation of the operation member (10) and causes the urging force to function as an operation reaction force against the operation of the operation member (10). In an automatic steering operation in which the wheel (16) is steered without depending on the operation of the operation member (10), the controller (22) enables the operation member (10) to be moved in accordance with steering of the wheel (16) by the urging force and causes at least part of the urging force generated in the normal operation not to be generated.
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公开(公告)号：EP4124545A1
公开(公告)日：2023-02-01
申请号：EP22187193.2
申请日：2022-07-27
发明人： MATSUDA, Satoshi , NAMIKAWA, Isao , ANRAKU, Koji , IIDA, Tomoyuki , YAMASHITA, Masaharu , SHIBATA, Kenji
摘要： A steering control device (50) includes a base axial force calculator (81), a limiting axial force calculator (82), and a final axial force calculator (83). The limiting axial force calculator (82) includes a steering angle holder (91), a reference angle calculator (93), a final difference calculator (94), and an axial force calculator (95). The steering angle holder (91) is configured to hold a steering angle at the time of limiting a turning operation of the turning wheels (16) when the turning operation is limited. The reference angle calculator (93) is configured to calculate a reference angle. The final difference calculator (94) 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 (95) 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：EP4119422A1
公开(公告)日：2023-01-18
申请号：EP22184053.1
申请日：2022-07-11
IPC分类号： B62D6/00
摘要： A steering control device (1) includes a control unit (60) configured to perform a calculation based on angle information and to control the operation of a turning section (6) based on a turning control amount. The angle information is obtained by relating the turning control amount for operating the turning section (6) to a steering angle (θs) that is an angle by which a steering wheel (3) is steered. The control unit (60) includes a speed increase ratio calculation unit (70) configured to calculate a speed increase ratio (Gsir) based on state variables, and an angle information calculation unit (71) configured to calculate the angle information by converting the steering angle (θs) using the speed increase ratio (Gsir) obtained by the speed increase ratio calculation unit (70).
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公开(公告)号：EP4112425A1
公开(公告)日：2023-01-04
申请号：EP22171409.0
申请日：2022-05-03
发明人： AKATSUKA, Kosuke , KUDO, Yoshio , MIYAKE, Junya
摘要： A vehicle control system (10) for a steer-by-wire vehicle (1) executes: driving assist control that assists driving of the vehicle (1); and conjunction reaction force control that applies a steering reaction force component to a steering wheel (3) in conjunction with vehicle turning caused by the driving assist control. A driver turn angle (δx) is a target turn angle corresponding to a steering angle (θs) of the steering wheel (3), and a first system turn angle (δy1) is a target turn angle required by the driving assist control. In the conjunction reaction force control, a second system turn angle (δy2) is acquired by adjusting the first system turn angle (δy1) according to a driver's steering intention such that the difference between the system turn angle and the driver turn angle (δx) becomes smaller. Then, a steering reaction force component is applied in a direction of reducing a difference (d2) between the driver turn angle (δx) and the second system turn angle (δy2).
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公开(公告)号：EP4082874A1
公开(公告)日：2022-11-02
申请号：EP22165912.1
申请日：2022-03-31
IPC分类号： B62D6/00
摘要： In a steering control device configured to control a steering system (2) where a steering torque required for steering a steering wheel (3) is changed using a motor torque, a processing circuit includes a first calculation situation where a calculational hysteresis component for adding a first hysteresis characteristic to a torque component is calculated and a second calculation situation where the calculational hysteresis component for adding a second hysteresis characteristic to the torque component is calculated. In the second calculation situation after change from the first calculation situation, the processing circuit calculates a value corresponding to an origin in the second hysteresis characteristic at a time when the calculational hysteresis component enabling a value of the calculational hysteresis component at a timing of the change from the first calculation situation to be maintained is calculated, and calculates the calculational hysteresis component using the calculated value as the origin.
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公开(公告)号：EP4074580A1
公开(公告)日：2022-10-19
申请号：EP22165518.6
申请日：2022-03-30
发明人： AKATSUKA, Kosuke , KUDO, Yoshio , NAMIKAWA, Isao , KODERA, Takashi , ANRAKU, Koji , MIYAKE, Junya
摘要： A vehicle control system (10) controls a steer-by-wire type vehicle (1). The vehicle control system (10) executes: reaction force control that applies a steering reaction force to a steering wheel (3); and driving assist control that assists driving of the vehicle (1). The reaction force control includes road information transmission control that applies a steering reaction force component corresponding to an oscillation caused by road surface unevenness to the steering wheel (3). The vehicle control system (10) deactivates the road information transmission control when a deactivation condition is satisfied. The deactivation condition is that the driving assist control is in operation and a steering parameter reflecting a driver's steering intention is less than a threshold (Tth _RI). As another example, the deactivation condition is that the driving assist control that vibrates the steering wheel (3) for notifying the driver of a possibility of a lane departure is in operation.
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公开(公告)号：EP4047796A1
公开(公告)日：2022-08-24
申请号：EP22156246.5
申请日：2022-02-11
申请人： JTEKT CORPORATION
发明人： SATO, Yuto , NATSUME, Yusuke
摘要： A motor control device (13) includes a board that is provided at an end of a motor (12) including winding groups of two systems and controls supply of electric power to the winding group independently for each system. The board includes two areas that are partitioned by a boundary line passing through the center of the motor (12) when viewed in an axial direction of the motor (12). A power supply terminal connector (55, 65), an inverter circuit (52, 62), and a motor terminal connector (54, 64) are sequentially arranged along the boundary line when viewed in the axial direction of the motor (12). The motor terminal connector (54, 64) is provided such that a straight line perpendicular to a direction in which motor terminals are arranged and the boundary line form an acute angle.
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