Four wheel steering alignment process
    1.
    发明授权
    Four wheel steering alignment process 失效
    四轮转向对准过程

    公开(公告)号:US06721629B2

    公开(公告)日:2004-04-13

    申请号:US09966219

    申请日:2001-09-28

    IPC分类号: G05D312

    摘要: Disclosed is a method for aligning a position sensor in a vehicle with steerable wheels comprising obtaining an absolute position value responsive to a position signal from a handwheel position sensor, obtaining a relative position value responsive to an encoder signal count from a position encoder, and obtaining an index position value responsive to an index position signal. The method further includes receiving an alignment enable signal and determining a correction factor responsive to the relative position value and the index position value. The method for aligning a position sensor is responsive to at least one of the absolute position value, the relative position value, and the index position value under conditions determined from the status of the alignment enable signal. Also disclosed is a method for aligning a steerable wheel in a vehicle with electric power steering comprising obtaining an alignment correction corresponding to a computed correction of wheel position relative to the vehicle from an alignment apparatus, receiving an alignment enable signal, where the method of aligning is responsive to the alignment correction under conditions determined from the status of the alignment enable signal.

    摘要翻译: 公开了一种用于将车辆中的位置传感器与可转向轮对准的方法,包括响应于来自手轮位置传感器的位置信号获得绝对位置值,响应于来自位置编码器的编码器信号计数获得相对位置值,并获得 响应于索引位置信号的索引位置值。 该方法还包括接收对准使能信号并且响应于相对位置值和索引位置值确定校正因子。 用于对准位置传感器的方法响应于从对准使能信号的状态确定的条件下的绝对位置值,相对位置值和索引位置值中的至少一个。 还公开了一种用于将车辆中的可转向车轮对准电动助力转向的方法,其包括从对准装置获得对应于相对于车辆的车轮位置的计算校正的对准校正,接收对准使能信号,其中对准方法 在从对准使能信号的状态确定的条件下响应于对准校正。

    Dual gain algorithm for four wheel steering system

    公开(公告)号:US06640172B2

    公开(公告)日:2003-10-28

    申请号:US09966722

    申请日:2001-09-28

    IPC分类号: G06F1700

    CPC分类号: B62D7/159

    摘要: A vehicle steering system coupled to a steerable wheel, comprising a steering rack linked to said steerable wheel, an electric motor having an output shaft engaged with the steering rack for controlling the steerable wheel. The system also includes a position sensor configured to measure an actual steerable wheel angle of the steering rack and thereby the steerable wheel, a return spring, where the return spring is biased so as to provide a returning force to the steering rack. Finally, the system includes a controller that provides a command to the electric motor resulting in a torque, the command is responsive to the actual steerable wheel angle, a desired steerable wheel angle, and a command direction.