- 专利标题: Electric power steering device
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申请号: US17260737申请日: 2019-12-12
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公开(公告)号: US11377141B2公开(公告)日: 2022-07-05
- 发明人: Tetsuya Kitazume , Shoya Maruyama
- 申请人: NSK LTD.
- 申请人地址: JP Tokyo
- 专利权人: NSK LTD.
- 当前专利权人: NSK LTD.
- 当前专利权人地址: JP Tokyo
- 代理机构: Sughrue Mion, PLLC
- 优先权: JPJP2018-234462 20181214
- 国际申请: PCT/JP2019/048792 WO 20191212
- 国际公布: WO2020/122200 WO 20200618
- 主分类号: B62D3/12
- IPC分类号: B62D3/12 ; B62D5/04 ; B62D6/00
摘要:
An electric power steering device including: a control rotational displacement calculation unit configured to calculate a control rotational displacement when a steering angle of the steering system is in an angular range from a maximum allowable steering angle for the steering system to a predetermined threshold steering angle; a control steering angle shifting unit configured to calculate the control rotational displacement corrected by a correction amount based on one of the steering torque and rack axial force and a sign of one of the control rotational displacement and the steering angle as a shift control steering angle; and a feedforward control unit configured to output a second current command value based on the shift control steering angle and steering velocity. An assist control is controlled with a third current command value calculated by adding the second current command value to the first current command value.
公开/授权文献
- US20210245800A1 ELECTRIC POWER STEERING DEVICE 公开/授权日:2021-08-12
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