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    Variable assist power steering using vehicle speed and steering pressure
    6.
    发明授权
    Variable assist power steering using vehicle speed and steering pressure 失效
    可变辅助动力转向使用车速和转向压力

    公开(公告)号：US5904222A

    公开(公告)日：1999-05-18

    申请号：US743869

    申请日：1996-11-06

    申请人： Michael K. Liubakka ,  Timothy G. Offerle ,  Paul Sisko

    发明人： Michael K. Liubakka ,  Timothy G. Offerle ,  Paul Sisko

    IPC分类号： B62D6/00 ,  B62D5/07 ,  B62D6/02 ,  B62D101/00 ,  B62D111/00 ,  B62D123/00 ,  B62D5/06

    CPC分类号： B62D6/02

    摘要： A variable assist power steering system (10) uses both vehicle speed and steering valve inlet pressure to vary the steering assist provided. A system controller (30) receives speed and pressure data from sensors (24, 26) and produces a control signal for an actuator (28) that shunts fluid flow from the pump (22) to the steering valve (20) thereby affecting steering valve pressure which controls the rack piston (16) which changes the angle of the front vehicle wheels used for steering. The controller (30) employs a calibration table (32) with entries representing actuator current, vehicle speed and inlet pressure wherein the speed and pressure fall into ranges defined by equally spaced speed points and equally or unequally spaced pressure points. Having pressure points spaced with a distance between any two sequential points a power of two in sensor counts allows manageable bilinear interpolation of current versus speed and pressure without complicated divide operators.

    摘要翻译： 可变辅助动力转向系统（10）使用车速和转向阀入口压力来改变提供的转向辅助。 系统控制器（30）从传感器（24,26）接收速度和压力数据，并产生用于将流体从泵（22）流向转向阀（20）的致动器（28）的控制信号，从而影响转向阀 控制齿条活塞（16）的压力，其改变用于转向的前车轮的角度。 控制器（30）采用具有表示致动器电流，车速和入口压力的条目的校准表（32），其中速度和压力落入由等间隔的速度点和相等或不等间隔的压力点所限定的范围内。 将压力点与任何两个连续点之间的距离间隔开，传感器计数中的两个功率允许当前对速度和压力的可管理双线性插值，而无需复杂的除法运算符。

    Method of controlling an automotive vehicle having a trailer using rear axle slip angle
    7.
    发明授权
    Method of controlling an automotive vehicle having a trailer using rear axle slip angle 有权
    使用后桥滑移角度控制具有拖车的机动车辆的方法

    公开(公告)号：US07401871B2

    公开(公告)日：2008-07-22

    申请号：US10708675

    申请日：2004-03-18

    申请人： Jianbo Lu ,  Timothy G. Offerle

    发明人： Jianbo Lu ,  Timothy G. Offerle

    IPC分类号： B60T8/60

    CPC分类号： B60T8/17552 ,  B60T7/20 ,  B60T8/1708 ,  B60T2230/08

    摘要： A system and method of controlling a vehicle with a trailer comprises determining the presence of a trailer, determining a vehicle velocity, determining a steering wheel angle, and determining a rear axle side slip angle. When the rear axle side slip angle is above a predetermined value, the vehicle velocity is above a velocity threshold, and the steering wheel is about zero, brake-steer is applied to the vehicle.

    摘要翻译： 用拖车控制车辆的系统和方法包括确定拖车的存在，确定车辆速度，确定方向盘角度以及确定后轴侧滑角。 当后轴侧滑角高于预定值时，车速高于速度阈值，并且方向盘约为零，制动转向器被施加到车辆。