• 专利标题: Electric power steering device
  • 申请号: US17260737
    申请日: 2019-12-12
  • 公开(公告)号: US11377141B2
    公开(公告)日: 2022-07-05
  • 发明人: Tetsuya KitazumeShoya 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
Electric power steering device
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
信息查询
IPC分类:
B 作业;运输
B62 无轨陆用车辆
B62D 机动车;挂车(农用机械或机具的转向机构或在所要求轨道上的引导装置入A01B69/00;车轮,脚轮,车轴,提高车轮的附着力入B60B;车用轮胎,轮胎充气或轮胎的更换入B60C;拖有挂车的牵引车或类似车辆之间的连接入B60D;轨道和道路两用车辆,两栖或可转换的车辆入B60F;悬架装置的配置入B60G;加热、冷却、通风或其他空气处理设备入B60H;车窗,挡风玻璃,非固定车顶,门或类似装置,车辆不用时的护套入B60J;动力装置的布置,辅助驱动装置,传动装置,控制机构,仪表或仪表板入B60K;电动车辆的电力装备或动力装置入B60L;电动车辆的电源线入B60M;其他类目不包含的乘客用设备入B60N;适用于货运或装载特殊货物或物体的入B60P;用于一般车辆信号或照明装置的布置,其安装或支承或者其电路入B60Q;其他类目不包含的车辆,车辆配件或车辆部件入B60R;其他类目不包含的保养,清洗,修理,支承,举升或调试入B60S;制动器布置,制动控制系统或其部件入B60T;气垫车入B60V;摩托车及其所用附件入B62J,B62K;车辆试验入G01M)
B62D3/00 转向传动机构(助力的或动力驱动的入B62D5/00;转向拉杆系入B62D7/00;用于不可偏转车轮的入B62D11/00;一般传动装置入F16H)
B62D3/02 .机械的
B62D3/12 ..齿轮齿条型的
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