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公开(公告)号：US20200331522A1
公开(公告)日：2020-10-22
申请号：US16849114
申请日：2020-04-15
发明人： Masaharu Yamashita , Atsushi Sato , Masataka Okuda , Yosuke Yamashita , Shintaro Takayama , Shunsuke Hiromasa , Toshiyuki Mikida , Shoji Kubota , Yuji Fujita , Kenichi Abe , Toshimitsu Sakai
摘要： An actuator that applies force to a member associated with steering, and a control device that controls the actuator, have duplex configuration. First and second control devices compute the same controlled variable as first and second controlled variables, respectively. In a normal mode, the control device controls the actuator according to the first controlled variable. The first and second control devices send and receive respectively computed controlled variables to and from each other via communications. When a discrepancy arises between the first and second controlled variables, or an abnormality occurs in communications between the first and second control devices, the operating mode is switched from the normal mode to an independent mode. In the independent mode, the first and second control devices control the first and second actuators, according to the first and second controlled variables, respectively.
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公开(公告)号：US11498609B2
公开(公告)日：2022-11-15
申请号：US16819672
申请日：2020-03-16
摘要： A steer-by-wire vehicle includes a steering actuator configured to turn a wheel and a reaction actuator configure to apply a torque to a steering wheel. An electronic control unit of a control apparatus for the vehicle is configured to execute normal steering control for turning the wheel and applying a reaction torque to the steering wheel according to a rotation of the steering wheel, and, when an activation condition including that the normal steering control is not needed is satisfied, execute rotation suppression control for suppressing the rotation of the steeling wheel without prohibiting the rotation of the steering wheel. Specifically, the electronic control unit is configured to, based on a steering speed or a steering torque, determine a rotation suppression torque for suppressing the rotation of the steering wheel, and control the reaction actuator such that the rotation suppression torque is applied to the steering wheel.
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公开(公告)号：US20230234639A1
公开(公告)日：2023-07-27
申请号：US18156826
申请日：2023-01-19
发明人： Takashi Koudai , Yuji Fujita , Yugo Nagashima , Kazuma Hasegawa , Yuuta Kajisawa , Shintaro Takayama , Hiroyuki Katayama , Yosuke Yamashita , Masaharu Yamashita
摘要： A steering control device includes a control unit. The control unit 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：US11597434B2
公开(公告)日：2023-03-07
申请号：US16849114
申请日：2020-04-15
发明人： Masaharu Yamashita , Atsushi Sato , Masataka Okuda , Yosuke Yamashita , Shintaro Takayama , Shunsuke Hiromasa , Toshiyuki Mikida , Shoji Kubota , Yuji Fujita , Kenichi Abe , Toshimitsu Sakai
摘要： An actuator that applies force to a member associated with steering, and a control device that controls the actuator, have duplex configuration. First and second control devices compute the same controlled variable as first and second controlled variables, respectively. In a normal mode, the control device controls the actuator according to the first controlled variable. The first and second control devices send and receive respectively computed controlled variables to and from each other via communications. When a discrepancy arises between the first and second controlled variables, or an abnormality occurs in communications between the first and second control devices, the operating mode is switched from the normal mode to an independent mode. In the independent mode, the first and second control devices control the first and second actuators, according to the first and second controlled variables, respectively.
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公开(公告)号：US12128964B2
公开(公告)日：2024-10-29
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
CPC分类号： B62D5/006 , B62D5/0424 , B62D5/0463 , B62D5/0481
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：US12116052B2
公开(公告)日：2024-10-15
申请号：US17662118
申请日：2022-05-05
发明人： Akira Takesaki , Hisashi Kameya , Hiroki Tomizawa , Masaharu Yamashita , Kenji Shibata , Yosuke Yamashita , Shintaro Takayama , Toshihiro Takahashi , Yuji Fujita , Kenichi Abe , Yugo Nagashima
CPC分类号： B62D5/0487 , B62D5/046 , B62D6/00
摘要： Control calculation units of a back system in each actuator operate by a collaborative drive mode in which a torque is output to a motor drive unit by using an information transmitted and received mutually by a communication between the systems in common. Cooperative control calculation units in a reaction force actuator and a turning actuator can operate in cooperation with each other based on the information transmitted and received mutually by a communication between actuators. A communication between adjacent systems and a communication between adjacent actuators are restored, when a focus control calculation unit is restored, after the focus control calculation unit is stopped during operation and at least one of the communication between adjacent systems or the communication between adjacent actuators is interrupted.
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公开(公告)号：US11565746B2
公开(公告)日：2023-01-31
申请号：US16849114
申请日：2020-04-15
发明人： Masaharu Yamashita , Atsushi Sato , Masataka Okuda , Yosuke Yamashita , Shintaro Takayama , Shunsuke Hiromasa , Toshiyuki Mikida , Shoji Kubota , Yuji Fujita , Kenichi Abe , Toshimitsu Sakai
摘要： An actuator that applies force to a member associated with steering, and a control device that controls the actuator, have duplex configuration. First and second control devices compute the same controlled variable as first and second controlled variables, respectively. In a normal mode, the control device controls the actuator according to the first controlled variable. The first and second control devices send and receive respectively computed controlled variables to and from each other via communications. When a discrepancy arises between the first and second controlled variables, or an abnormality occurs in communications between the first and second control devices, the operating mode is switched from the normal mode to an independent mode. In the independent mode, the first and second control devices control the first and second actuators, according to the first and second controlled variables, respectively.
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公开(公告)号：US11919579B2
公开(公告)日：2024-03-05
申请号：US17540000
申请日：2021-12-01
发明人： Kazuma Hasegawa , Toshihiro Takahashi , Yuji Fujita , Kenichi Abe , Yugo Nagashima , Yuuta Kajisawa , Takashi Koudai , Hiroaki Hanzawa , Atsushi Satou , Yosuke Yamashita , Shintaro Takayama , Tokuaki Hibino
CPC分类号： B62D5/046 , B60R16/02 , B62D5/0406 , B62D5/0481 , B62D6/10
摘要： A power supply system includes a system control unit, an auxiliary power supply, 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：US20230303159A1
公开(公告)日：2023-09-28
申请号：US18158591
申请日：2023-01-24
发明人： Takashi Koudai , Yuji Fujita , Yugo Nagashima , Kazuma Hasegawa , Yuuta Kajisawa , Masaharu Yamashita , Yosuke Yamashita , Kazuaki Iida , Shintaro Takayama
IPC分类号： B62D5/04
CPC分类号： B62D5/0481
摘要： A turning control device includes a precursor detection circuit configured to detect a precursor of an abnormality by which a smooth operation of a turning device is impaired. The precursor detection circuit is configured to start measurement of a total running time of a vehicle when the precursor is detected, and is configured to execute a process of reporting the precursor, based on the measured total running time. The precursor detection circuit is configured to perform the measurement of the total running time regardless of whether the precursor is detected again, when a vehicle electric power source is switched off and then is switched on again after the precursor is detected once.
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公开(公告)号：US20200307675A1
公开(公告)日：2020-10-01
申请号：US16819672
申请日：2020-03-16
摘要： A steer-by-wire vehicle includes a steering actuator configured to turn a wheel and a reaction actuator configure to apply a torque to a steering wheel. An electronic control unit of a control apparatus for the vehicle is configured to execute normal steering control for turning the wheel and applying a reaction torque to the steering wheel according to a rotation of the steering wheel, and, when an activation condition including that the normal steering control is not needed is satisfied, execute rotation suppression control for suppressing the rotation of the steeling wheel without prohibiting the rotation of the steering wheel. Specifically, the electronic control unit is configured to, based on a steering speed or a steering torque, determine a rotation suppression torque for suppressing the rotation of the steering wheel, and control the reaction actuator such that the rotation suppression torque is applied to the steering wheel.
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