公开(公告)号：US11247569B2

公开(公告)日：2022-02-15

申请号：US16837217

申请日：2020-04-01

申请人： SUBARU CORPORATION

发明人： Keigo Yamada ,  Shogo Machida

IPC分类号： B60L15/20 ,  B60W30/20 ,  H02P23/04 ,  B60W20/00

摘要： A damping control device for an electric vehicle including a motor and a transmission in a drive system between the motor and a drive wheel includes a detector, a bandpass filter, first to third calculators, and a controller. The detector detects a rotation speed of the motor. The bandpass filter passes a vibration component included in the detected motor rotation speed, in a resonance frequency band of the drive system. The first calculator calculates a damping torque for damping resonance of the drive system with a motor torque, based on the passed vibration component. The second calculator calculates, as a damping torque offset value, an average value of the calculated damping torque for a predetermined time. The third calculator calculates a target damping torque. The controller controls a drive state of the motor.

公开(公告)号：US20230382390A1

公开(公告)日：2023-11-30

申请号：US18140815

申请日：2023-04-28

申请人： SUBARU CORPORATION

发明人： Fumiya Sato ,  Yoshinobu Yamazaki ,  Akihiro Nabeshima ,  Yoshiyuki Jin ,  Takeshi Yoneda ,  Hiroshi Kusano ,  Keigo Yamada ,  Takumi Araki ,  Shuntaro Miura

IPC分类号： B60W40/068

CPC分类号： B60W40/068 ,  B60W2552/40 ,  B60W2520/26

摘要： A vehicle includes a first detector detecting first information related to a condition of a first road surface; a second detector contactlessly detecting second information related to a condition of a second road surface; and a controller controlling a driving force of the vehicle using a friction coefficient estimated based on the first and/or second information. A processor(s) of the controller execute(s) a process including: determining whether the conditions are of a same type based on the first and second information; when the conditions are of different types, controlling the driving force using a friction coefficient estimated based on the second information as a friction coefficient of the second road surface; and based on determining that the conditions are of the same type, controlling the driving force using a friction coefficient estimated based on the first information as the road surface friction coefficient of the second road surface.

公开(公告)号：US12103405B2

公开(公告)日：2024-10-01

申请号：US18116947

申请日：2023-03-03

申请人： SUBARU CORPORATION

发明人： Yoshinobu Yamazaki ,  Masami Oguri ,  Akihiro Nabeshima ,  Yoshiyuki Jin ,  Takeshi Yoneda ,  Fumiya Sato ,  Hiroshi Kusano ,  Keigo Yamada ,  Takumi Araki ,  Shuntaro Miura ,  Susumu Ito

IPC分类号： B60W30/18 ,  B60L15/20 ,  B60L50/60

CPC分类号： B60L50/60 ,  B60L15/2009 ,  B60W30/18127 ,  B60L2240/12 ,  B60L2240/423

摘要： A power distribution apparatus for an electric vehicle includes a power distribution mechanism configured to distribute power output from an electric motor to front and rear wheels, and a controller configured to control the power distribution mechanism. The power distribution mechanism includes a first clutch configured to fix a power distribution ratio during straight traveling to a first distribution ratio at which first power distributed to the rear wheels and second power distributed to the front wheels are nearly same, and a second clutch configured to fix the power distribution ratio during straight traveling to a second distribution ratio at which the first power is larger than the second power. The controller is configured set the second clutch to an engaged state and sets the first clutch to a half-engaged state during regenerative braking.