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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：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：US11973453B2
公开(公告)日：2024-04-30
申请号：US17660817
申请日：2022-04-26
发明人： Hiroki Tomizawa , Masaharu Yamashita , Kenji Shibata , Yosuke Yamashita , Shoji Kubota , Yugo Nagashima , Yuji Fujita , Kenichi Abe
摘要： A first actuator and a second actuator each have a plurality of control calculation units provided redundantly and a plurality of motor drive units provided redundantly. In the first and the second actuators, the control calculation units of the systems paired with each other transmit and receive information to and from each other by a communication between the actuators. When a failure occurs in any system in either of the two actuators, or when a failure occurs in a communication between actuators in either system, the control calculation unit of each actuator of the system in which the failure occurred stops the motor drive control. Then, the motor drive control is continued by the control calculation unit of the normal system in both actuators.
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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：US20200047764A1
公开(公告)日：2020-02-13
申请号：US16537878
申请日：2019-08-12
IPC分类号： B60W30/18 , B62D5/04 , B60R16/023 , B60W10/20 , B60W10/184 , B60T8/24
摘要： A steer-by-wire steering system, including: a two-system reaction force applying device including two reaction force controllers and configured to obtain operation information and apply an operation reaction force; a two-system steering device including two steering controllers and configured to steer a wheel; an operation information obtaining device; an auxiliary steering device capable of changing a direction of a vehicle; two dedicated communication lines one of which information-transmittably and information-receivably connects one of the two reaction force controllers and one of the two steering controllers to each other, and the other of which information-transmittably and information-receivably connects the other of the two reaction force controllers and the other of the two steering controllers to each other; and a first communication bus to which the operation information obtaining device is at least information-transmittably connected and to which the two steering controllers and the auxiliary steering device are at least information-receivably connected.
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公开(公告)号：US11332140B2
公开(公告)日：2022-05-17
申请号：US16537878
申请日：2019-08-12
IPC分类号： B60W30/00 , B60W30/18 , B60R16/023 , B60T8/24 , B60W10/184 , B60W10/20 , B62D5/04
摘要： A steer-by-wire steering system, including: a two-system reaction force applying device including two reaction force controllers and configured to obtain operation information and apply an operation reaction force; a two-system steering device including two steering controllers and configured to steer a wheel; an operation information obtaining device; an auxiliary steering device capable of changing a direction of a vehicle; two dedicated communication lines one of which information-transmittably and information-receivably connects one of the two reaction force controllers and one of the two steering controllers to each other, and the other of which information-transmittably and information-receivably connects the other of the two reaction force controllers and the other of the two steering controllers to each other; and a first communication bus to which the operation information obtaining device is at least information-transmittably connected and to which the two steering controllers and the auxiliary steering device are at least information-receivably connected.
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