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    • 87. 发明授权
    • Method and apparatus for rear-wheel steering control
    • 用于后轮转向控制的方法和装置
    • US5430650A
    • 1995-07-04
    • US287921
    • 1994-08-09
    • Yuta SusukiKatsushi Matsuda
    • Yuta SusukiKatsushi Matsuda
    • B62D6/00B62D7/14B62D7/15B62D101/00B62D113/00B62D131/00B62D137/00B62D5/26
    • B62D7/159B62D7/142B60G2204/416
    • A rear-wheel steering control apparatus includes a controller, which performs a first-order lag process. This process is equivalent to a first-order lag transfer function and is represented by a time constant matching loadage data from a rear-wheel stroke sensor and a proportional constant matching vehicle speed data from a vehicle speed sensor. The first-order lag process is performed on a front-wheel steering angle, obtained based on steering-wheel angle data from a steering-wheel angle sensor, to thereby set a target rear-wheel steering angle. Steering of rear wheels to the set rear-wheel steering angle is carried out with a degree of first-order response delay corresponding to the loadage. Thereby, traveling stability and forepart turning performance of a vehicle are improved in various loading and steering conditions.
    • 后轮转向控制装置包括执行一阶滞后过程的控制器。 该过程等同于一阶滞后传递函数,并且由来自后轮行程传感器的加载数据和来自车辆速度传感器的比例恒定匹配车辆速度数据的时间常数表示。 一阶滞后处理是在基于来自方向盘角度传感器的方向盘角度数据获得的前轮转向角进行的,从而设定目标后轮转向角。 后轮的转向到设定的后轮转向角度,以与加载相对应的一级响应延迟程度进行。 因此,在各种装载和转向条件下,车辆的行驶稳定性和前车转弯性能得到改善。
    • 88. 发明授权
    • Servo-assisted steering system for motor vechicles
    • 伺服辅助转向系统
    • US5080186A
    • 1992-01-14
    • US613501
    • 1990-11-02
    • Dieter ElserHeinrich HolubRudolf Schurr
    • Dieter ElserHeinrich HolubRudolf Schurr
    • B62D5/04B62D5/083B62D5/30B62D6/00B62D101/00B62D113/00B62D119/00B62D131/00
    • B62D5/0835B62D5/0421B62D5/30B62D6/008
    • A servo assisted power steering system for motor vehicles comprising a steering-wheel shaft (2) which is connected via a rotary slide valve (6, 7, 8) and a worm-gear spindle (4) of a steering gear (5). The rotary slide valve controls the pressure impacting on a working piston (15) in a hydraulic power boost device. A power takeoff shaft (20) of an electric motor (21) is connected with the rotary slide (7) of rotary slide valve. In case of a rotary motion of steering-wheel shaft (2), a sensor (22) so activates electric motor (21) that a small counterforce is generated upon rotary slide (7) and that force works against the rotary motion of steering-wheel shaft (2). After completion of the rotary motion of steering-wheel shaft (2), as the steering wheel is let go, rotary slide (7) is moved back all the way into its neutral position by the electric motor.
    • PCT No.PCT / EP89 / 00652 Sec。 371日期1990年11月2日 102(e)日期1990年11月2日PCT提交1989年6月10日PCT公布。 WO89 / 12567 PCT出版物 日本1989年12月28日。一种用于机动车辆的伺服辅助动力转向系统,包括通过旋转滑阀(6,7,8)和蜗轮主轴(4)连接的方向盘轴(2) 舵机(5)。 旋转滑阀控制冲击液压动力升压装置中的工作活塞(15)的压力。 电动机(21)的动力输出轴(20)与旋转滑阀的旋转滑块(7)连接。 在方向盘轴(2)的旋转运动的情况下,传感器(22)激活电动机(21),其在旋转滑动件(7)上产生小的反作用力,并且该力抵抗转向盘 轮轴(2)。 在方向盘轴(2)的旋转运动完成后,随着方向盘的放开,旋转滑块(7)由电动机一直向中间位置运动。