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    • 55. 发明授权
    • Control apparatus for electrically driven power steering system for a
fork lift truck
    • 用于叉车的电动助力转向系统的控制装置
    • US4828066A
    • 1989-05-09
    • US104104
    • 1987-10-05
    • Takashi Hayashi
    • Takashi Hayashi
    • B62D6/00B62D5/04
    • B62D5/0463
    • A control apparatus for an electrically driven power steering system for a fork lift truck includes a torque sensor for generating torque signals when a steering torque is applied to the steering wheel, a load weight sensor for generating load weight signals corresponding to the load weight placed on the truck and a control circuit for supplying a driving torque to the steering assist motor in accordance with steering assist characteristics determined in accordance with the aforementioned torque signals and load weight signals. The control apparatus may also include a vehicle speed sensor so that the steering assist characteristics will be determined with the vehicle speed simultaneously taken into account.
    • 一种用于叉车的电动助力转向系统的控制装置,包括:转向传感器,用于在转向转矩施加到方向盘时产生转矩信号;负载重量传感器,用于产生与负载重量相对应的负载重量信号 叉车和控制电路,用于根据根据上述转矩信号和负载重量信号确定的转向辅助特性向转向辅助电动机提供驱动转矩。 控制装置还可以包括车速传感器,以便同时考虑车辆速度来确定转向辅助特性。
    • 58. 发明授权
    • Torque detecting apparatus for electrical power steering system
    • 用于电动助力转向系统的转矩检测装置
    • US4676331A
    • 1987-06-30
    • US805820
    • 1985-12-06
    • Takashi IwakiTakashi Hayashi
    • Takashi IwakiTakashi Hayashi
    • B62D6/10B62D5/04
    • B62D6/10
    • A torque detecting apparatus for an electrical power steering system, having a steering wheel, a first steering shaft connected to the steering wheel, a second steering shaft connected to a vehicle wheel to be steered, an electric motor connected to the second steering shaft, and a controller for operating the motor to produce a driving force corresponding to a torque detected by the torque detecting apparatus. The apparatus comprises: an elastic coupling having an elastic member, and coupling the steering shafts while permitting relative rotation of the steering shafts through elastic deformation of the elastic member; a first and a second detector shaft supported rotatably relative to each other; a first and a second speed-up device for increasing angular velocities of rotary movements of the first and the second steering shafts and transmitting the rotary movements to the first and second detector shafts, respectively; and a detector associated with the detector shafts to detect an angle of relative rotation of the detector shafts and thereby detect the steering torque, and producing an electric signal representative of the torque, said signal being applied to the controller.
    • 一种用于电动助力转向系统的转矩检测装置,具有方向盘,连接到方向盘的第一转向轴,连接到待转向车辆车轮的第二转向轴,连接到第二转向轴的电动马达,以及 用于操作所述电动机以产生与由所述转矩检测装置检测到的转矩相对应的驱动力的控制器。 该装置包括:具有弹性构件的弹性联轴器,并且联接转向轴,同时允许转向轴通过弹性构件的弹性变形而相对旋转; 第一和第二检测器轴,其相对于彼此可旋转地支撑; 第一和第二加速装置,用于增加第一和第二转向轴的旋转运动的角速度,并将旋转运动分别传递到第一和第二检测器轴; 以及与检测器轴相关联的检测器,以检测检测器轴的相对旋转角度,从而检测转向转矩,并产生代表扭矩的电信号,所述信号被施加到控制器。