公开(公告)号：US20030173138A1

公开(公告)日：2003-09-18

申请号：US10063020

申请日：2002-03-12

Applicant: Ford Global Technologies, Inc.

Inventor： Wei-Yi Loh ,  Thomas Micheal Dalka ,  Weiping Zhu ,  Jiansheng Weng

IPC: B62D005/06

CPC classification number: B62D5/22 ,  B62D7/22 ,  F16F7/082

Abstract: A system for reducing steering nibble and other vibrations in a power-assisted steering system increases the amount of damping force when a power steering boost system is applying little or no steering force to the steering actuator, and reduces the amount of damping force when the power boost system is applying significant steering force to the steering actuator. A damping member is formed of a polymer material and is urged into contact with the steering actuator by a spring-biased clamping member. A shuttle valve regulates pressure from the hydraulic steering boost system to overcome the spring biasing force whenever hydraulic pressure is applied to the steering actuator. The preload of the spring biasing mechanism is varied by an electronic control unit that receives inputs from a driver-activated switch, and from vehicle condition sensors to allow automatic, adaptive adjustment of the damping to optimize driving comfort and safety.

Abstract translation: 一种用于在动力辅助转向系统中减少转向半刚性和其它振动的系统增加了当动力转向助力系统对转向致动器施加很少或没有转向力时的阻尼力的量，并且当功率 升压系统向转向执行器施加显着的转向力。 阻尼构件由聚合物材料形成，并且通过弹簧偏置的夹持构件被推动与转向致动器接触。 梭液阀调节来自液压转向助力系统的压力，以克服当向转向致动器施加液压时的弹簧偏压力。 弹簧偏置机构的预加载由接收来自驾驶员激活的开关的输入的电子控制单元以及来自车辆状态传感器的变化，以允许对阻尼的自动适应性调整，以优化驾驶舒适性和安全性。

公开(公告)号：US20040084887A1

公开(公告)日：2004-05-06

申请号：US10065555

申请日：2002-10-30

Applicant: FORD GLOBAL TECHNOLOGIES, INC.

Inventor： Wei-Yi Loh ,  Thomas Michael Dalka ,  Rena Hecht Basch ,  Jiansheng Weng

IPC: B62D001/18

CPC classification number: B62D7/224 ,  F16F9/535

Abstract: A magnetorheological (MR) vibration damper for damping axial and rotational vibrations of an automotive steering system may include a housing encasing MR fluid therein and a gear-like rotor and orifice plate disposed within the housing. The rotor and orifice plate, which may be affixed to the steering wheel shaft, includes a plurality of gear-like teeth on its surface and a plurality of holes for producing shear and normal forces, respectively, on the MR fluid. Electric coils may be disposed within the housing for generating an electric field for activating the MR fluid. The MR vibration damper may be activated or deactivated by a controller by comparing a signal value from a steering wheel vibration sensor to a predetermined threshold value. The controller may be programmable by a user to increase or decrease the predetermined threshold value, so as to enable customization of driving feel.

Abstract translation: 用于阻尼汽车转向系统的轴向和旋转振动的磁流变（MR）振动阻尼器可包括其中包含MR流体的壳体和设置在壳体内的齿轮状转子和孔板。 可以固定到方向盘轴的转子和孔板在其表面上包括多个齿轮状齿，并且分别在MR流体上产生剪切力和法向力的多个孔。 电线圈可以设置在壳体内以产生用于激活MR流体的电场。 可以通过将来自方向盘振动传感器的信号值与预定阈值进行比较，由控制器来激活或停用MR振动阻尼器。 控制器可以由用户编程以增加或减少预定阈值，以便能够定制驾驶感觉。