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    • 1. 发明授权
    • Control method and device for steering the rear wheel of a vehicle
    • 用于转向车辆后轮的控制方法和装置
    • US5392214A
    • 1995-02-21
    • US985149
    • 1992-12-03
    • Nobuo MomoseKiichi YamadaHiroaki Yoshida
    • Nobuo MomoseKiichi YamadaHiroaki Yoshida
    • B62D6/00B62D7/14B62D7/15B62D101/00B62D105/00B62D111/00B62D113/00B62D133/00B62D5/00
    • B62D7/159Y10S706/90
    • Various steering coefficients (KB, KC, KG) are decided in accordance with a detected car speed (V), while a correction amount (X) and a correction factor (Y) are determined by fuzzy reasoning in accordance with a detected road surface friction coefficient (.mu.), road surface gradient (.alpha.), and lateral acceleration (G). A reference in-phase steering amount (.delta.RB), equal to a product of a reference in-phase steering coefficient (KB) and a detected steering wheel angle (.theta.H), is corrected by an in-phase correction steering amount (.delta.RC), which is equal to a product of an in-phase steering coefficient (KC) and the detected steering wheel angle (.theta.H), with a delay determined by a time constant (T) calculated from the correction amount (X), to thereby determine a corrected in-phase steering amount (.delta.R). A corrected anti-phase steering amount (.delta.G), obtained by multiplying a reference anti-phase steering amount (.delta.GB), equal to a product of the anti-phase correction coefficient (KG) and a detected steering wheel angular velocity (.theta.HA), by the correction factor (Y), is added to the corrected in-phase steering amount (.delta.R), to thereby obtain a rear-wheel steering amount (.delta.) on which the rear wheels are so steered as to match the road surface friction coefficient, road surface gradient, and lateral acceleration.
    • 根据检测到的车速(V)来决定各种转向系数(KB,KC,KG),同时通过模糊推理根据检测到的路面摩擦来确定校正量(X)和校正因子(Y) 系数(μ),路面坡度(α)和横向加速度(G)。 参考同相转向量(delta RB)等于参考同相转向系数(KB)和检测到的方向盘角度(θH)的乘积,通过同相校正转向量(delta RC),其等于同相转向系数(KC)和检测到的方向盘角度(θH)的乘积,并且由由校正量(X)计算的时间常数(T)确定的延迟, 从而确定校正的同相转向量(ΔR)。 通过将参考反相转向量(deltaGB)乘以相等于反相校正系数(KG)与检测到的方向盘角速度(θ)的乘积获得的校正的反相转向量(delta G) HA)通过校正因子(Y)被添加到校正的同相转向量(ΔR)中,从而获得后轮转向量(delta),在后轮转向量(delta)上,后轮被转向以匹配 路面摩擦系数,路面坡度和横向加速度。
    • 5. 发明授权
    • Power steering apparatus for vehicle
    • 车辆动力转向装置
    • US5513720A
    • 1996-05-07
    • US429016
    • 1995-04-26
    • Youichi YamamotoMitsuhiko HararaHiroaki YoshidaNobuo MomoseTadao TanakaTsuyoshi Takeo
    • Youichi YamamotoMitsuhiko HararaHiroaki YoshidaNobuo MomoseTadao TanakaTsuyoshi Takeo
    • B62D6/02B62D5/06B62D5/083B62D6/00
    • B62D6/02
    • A power steering apparatus for a vehicle including a steering mechanism having a torsion bar, a rotary valve connected to an oil pump and disposed between an input shaft and an output shaft, a valve driving mechanism having a pressed portion projected on either the input shaft or the output shaft and a plunger on the one shaft of the input shaft or output shaft on which the pressed portion is not projected for pressing the pressed portion, setting a target assist force of an assist force of an assist force obtained by rotating the rotary valve in the torsion direction of the torsion bar and an assist force obtained by rotating the rotary valve in the reverse direction to the torsion direction, a plunger driving mechanism for driving the plunger so that the preset assist force is obtained, controlling the pressure itself of the rotary valve to the operation angle of the rotary valve, whereby varying the steering force of the steering wheel over a wide range of steering condition with a reduced burden to the driver.
    • 一种用于车辆的动力转向装置,其包括具有扭杆的转向机构,连接到油泵并设置在输入轴和输出轴之间的旋转阀,具有突出在输入轴上的按压部分的阀驱动机构或 所述输出轴和所述输入轴或输出轴的一个轴上的柱塞,所述按压部未在其上突出以挤压所述按压部,设定通过使所述旋转阀旋转而获得的辅助力的辅助力的目标辅助力 在扭杆的扭转方向和通过使旋转阀沿与扭转方向相反的方向旋转而获得的辅助力;柱塞驱动机构,用于驱动柱塞,使得获得预设的辅助力,控制压力本身 旋转阀旋转到旋转阀的操作角度,由此在一个宽的转向条件范围内改变方向盘的转向力 减轻了司机的负担。