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    Electric power steering equipment
    1.
    发明授权
    Electric power steering equipment 失效
    电动助力转向设备

    公开(公告)号：US4674588A

    公开(公告)日：1987-06-23

    申请号：US626203

    申请日：1984-06-29

    申请人： Tomio Yasuda ,  Akio Hashimoto

    发明人： Tomio Yasuda ,  Akio Hashimoto

    IPC分类号： B62D5/04 ,  B62D6/00 ,  B62D5/06

    CPC分类号： B62D5/0463 ,  B62D6/008

    摘要： Improved electric power steering equipment includes an electric motor as a driving device therefor wherein wetness detecting means is adapted to minimize reduction in the torque necessary for the steering operation to thereby improve the steering feeling of a driver. The wetness detecting means detects the degree of wetness of a vehicle or a road surface adjacent to the vehicle. The equipment according to the present invention also includes a control means for driving the electric motor in response to the steering torque detected by a torque detecting means and the degree of wetness detected by the wetness detecting means. Thus, wetness on a road is directly or indirectly detected by the wetness detecting means and based on the detecting results thereof, additional torque necessary for the steering operation is controlled, and therefore a driver can drive a vehicle with a relatively constant steering feeling at all times, regardless of various running states of the vehicle.

    摘要翻译： 改进的电动助力转向装置包括电动机作为其驱动装置，其中湿度检测装置适于使转向操作所需的扭矩的减小最小化，从而改善驾驶员的转向感。 湿度检测装置检测与车辆相邻的车辆或路面的湿度。 根据本发明的设备还包括用于响应于由转矩检测装置检测的转向转矩和由湿度检测装置检测到的湿度来驱动电动机的控制装置。 因此，通过湿度检测装置直接或间接地检测道路上的湿度，并且根据其检测结果，控制转向操作所需的附加扭矩，因此驾驶员可以根据相对恒定的转向感觉驾驶车辆 次，不管车辆的各种运行状态如何。

    Power transmission device of motor-driven power steering
    2.
    发明授权
    Power transmission device of motor-driven power steering 失效
    电动助力转向动力传动装置

    公开(公告)号：US4667759A

    公开(公告)日：1987-05-26

    申请号：US759001

    申请日：1985-07-25

    申请人： Akio Hashimoto ,  Tomio Yasuda

    发明人： Akio Hashimoto ,  Tomio Yasuda

    IPC分类号： B62D3/12 ,  B62D5/04 ,  F16H35/00

    CPC分类号： B62D5/0412

    摘要： A power transmission device of a motor-driven power steering system is provided which comprises a driving gear mounted on the outside of a shaft transmitting a force given from a steering wheel to a steering mechanism and rotatable about the shaft, a first connecting member including at least one gear for coupling the driving gear and a driving shaft of an electric motor, a second connecting member coupled to one out of the shaft and the driving gear, and a buffering member having elasticity coupled to the other out of the shaft and the driving gear and to the second connecting member.Preferably, the second connecting member has a cylindrical portion secured on the outside of the shaft and projections, and the driving gear has holes for receiving the buffering member and the projections.

    摘要翻译： 本发明提供一种电动动力转向系统的动力传递装置，该动力传动装置包括一个驱动齿轮，该驱动齿轮安装在一个轴的外侧，该轴传递从方向盘向转向机构提供的力并绕轴转动;第一连接构件， 用于联接驱动齿轮和电动机的驱动轴的至少一个齿轮，连接到轴中的一个和驱动齿轮的第二连接构件，以及具有弹性的另一个弹性联接到轴外的驱动 齿轮和第二连接构件。 优选地，第二连接构件具有固定在轴和突起的外侧上的圆柱形部分，并且驱动齿轮具有用于接收缓冲构件和突起的孔。

    Motor driven power steering system
    3.
    发明授权
    Motor driven power steering system 失效
    电动助力转向系统

    公开(公告)号：US4574903A

    公开(公告)日：1986-03-11

    申请号：US556669

    申请日：1983-11-30

    申请人： Akio Hashimoto ,  Tomio Yasuda

    发明人： Akio Hashimoto ,  Tomio Yasuda

    IPC分类号： B62D5/04 ,  B62D6/00

    CPC分类号： B62D5/0463 ,  B62D6/007

    摘要： A power steering system uses an electric motor to produce an auxiliary torque which is added to the torque applied to the steering wheel of a vehicle by the driver. The torque applied by the driver is detected by sensors. The system includes a control apparatus to control the operation of the motor according to the output signal from the sensors. The system further includes a closed electrical loop for feeding a signal corresponding to the output from the motor back to the input side of the loop. A variable-resistor is placed so that the amplification factor of an amplifier included in the loop can be changed by the resistor. The knob attached to the variable-resistor is disposed on the dashboard of the vehicle such that it can be reached by the driver's hand. This permits the driver to change the servo ratio, i.e., the ratio of the output torque of the power steering system to the input torque applied by the driver, while the vehicle is in motion.

    摘要翻译： 动力转向系统使用电动机来产生辅助转矩，该辅助转矩与驾驶员施加到车辆的方向盘的转矩相加。 驾驶员施加的扭矩由传感器检测。 该系统包括根据来自传感器的输出信号来控制电动机的操作的控制装置。 该系统还包括用于将对应于来自马达的输出的信号返回到回路的输入侧的封闭电气回路。 放置可变电阻器，使得包含在环路中的放大器的放大系数可以由电阻器改变。 连接到可变电阻器的旋钮设置在车辆的仪表板上，使得其可以由驾驶员的手抵达。 这允许驾驶员在车辆运动时改变伺服比，即，动力转向系统的输出扭矩与驾驶员施加的输入转矩的比率。

    Steering power transmitting equipment
    4.
    发明授权
    Steering power transmitting equipment 失效
    转向动力传动设备

    公开(公告)号：US4561515A

    公开(公告)日：1985-12-31

    申请号：US628301

    申请日：1984-07-06

    申请人： Akio Hashimoto ,  Tomio Yasuda

    发明人： Akio Hashimoto ,  Tomio Yasuda

    IPC分类号： B62D1/16 ,  B62D1/20 ,  B62D5/04

    CPC分类号： B62D5/0412

    摘要： The steering power transmitting equipment of the present invention comprises a steering gear mechanism having a steering wheel, an upper steering shaft, lower steering shaft and steering gear box, the steering gear mechanism having a torque sensor fixed on the upper steering shaft, a bracket disconnectably fixed to the steering gear box, an electric motor supported on the bracket, a driven gear which is driven by the electric motor and fixed coaxially to the lower steering shaft and an electric controller. The electric controller controls the rotating speed and rotating direction of the electric motor corresponding to the torque and the torque direction inputted by the torque sensor. The power steering gear mechanism is easily mounted on or demounted from standard manual steering equipment without requiring any large scale remodelling of the steering equipment.

    摘要翻译： 本发明的转向动力传递装置包括具有方向盘，上转向轴，下转向轴和转向齿轮箱的转向齿轮机构，转向齿轮机构具有固定在上转向轴上的转矩传感器，可拆卸地支架 固定到转向齿轮箱，支撑在支架上的电动马达，由电动机驱动并与下转向轴同轴固定的从动齿轮和电控制器。 电动控制器控制与扭矩传感器输入的转矩和转矩方向对应的电动机的转速和旋转方向。 动力转向齿轮机构易于安装在标准手动转向设备上或从标准手动转向设备上拆卸，而不需要对转向设备进行任何大规模的重新设计。

    Motor-driven power steering system
    5.
    发明授权
    Motor-driven power steering system 失效
    电动助力转向系统

    公开(公告)号：US4580648A

    公开(公告)日：1986-04-08

    申请号：US571164

    申请日：1984-01-16

    申请人： Noboru Murakami ,  Akio Hashimoto ,  Tomio Yasuda

    发明人： Noboru Murakami ,  Akio Hashimoto ,  Tomio Yasuda

    IPC分类号： B62D5/04 ,  B62D6/00

    CPC分类号： B62D5/0463 ,  B62D6/007 ,  B62D6/008

    摘要： A power steering system makes use of an electric motor to produce an auxiliary torque added to the torque which is applied to the steering wheel of a vehicle by the driver. The system includes a motor driver for driving the motor and a motor braking circuit for braking the motor. When the torque manually applied to the steering shaft of the vehicle is greater than a predetermined reference torque, an electronic control apparatus causes the motor driver to energize the motor according to the difference between these two torques. When the former torque is less than the reference torque, the control apparatus causes the motor braking circuit to brake the motor. In this way, the torque that the driver of the vehicle must apply to steer the vehicle is maintained equal to the reference torque, irrespective of the vehicle velocity. The reference torque is set by means of a variable-resistor.

    摘要翻译： 动力转向系统利用电动机产生加到驾​​驶员对车辆方向盘施加的转矩的辅助转矩。 该系统包括用于驱动马达的马达驱动器和用于制动马达的马达制动电路。 当手动施加到车辆的转向轴的扭矩大于预定的参考扭矩时，电子控制装置使得电动机驱动器根据这两个转矩之间的差来激励电动机。 当前一转矩小于参考转矩时，控制装置使马达制动电路制动电动机。 以这种方式，车辆驾驶员必须施加的转向车辆的扭矩保持等于参考扭矩，而与车速无关。 参考转矩通过可变电阻器来设定。

    Motor-driven power steering system
    6.
    发明授权
    Motor-driven power steering system 失效
    电动助力转向系统

    公开(公告)号：US4538698A

    公开(公告)日：1985-09-03

    申请号：US571272

    申请日：1984-01-16

    申请人： Akio Hashimoto ,  Tomio Yasuda

    发明人： Akio Hashimoto ,  Tomio Yasuda

    IPC分类号： B62D5/04 ,  B62D6/02

    CPC分类号： B62D6/02 ,  B62D5/046 ,  B65H2301/41812

    摘要： A power steering system makes use of a direct-current servomotor to produce an auxiliary torque added to the torque which is applied to the steering wheel of a vehicle by the driver. The system includes an electronic apparatus, which receives a signal indicating the velocity of the vehicle, divides the whole range of the vehicle velocity into at least three ranges, and determines under which of these ranges the present velocity falls. In the lowest range, the control apparatus energizes the motor to produce such an auxiliary torque. In the middle range, the apparatus de-energizes the motor and so no auxiliary torque is generated. In the highest range, the apparatus connects a load such as a resistor with the coil in the motor to brake the rotation of the steering wheel.

    摘要翻译： 动力转向系统利用直流伺服电动机产生加到驾​​驶员对车辆方向盘的转矩的辅助转矩。 该系统包括接收指示车辆速度的信号的电子设备，将车速的整个范围划分为至少三个范围，并确定当前速度落在哪个范围内。 在最低范围内，控制装置激励电动机以产生这样的辅助转矩。 在中间范围内，该装置使电动机断电，因此不产生辅助转矩。 在最高范围内，该装置将诸如电阻器的负载与电动机中的线圈连接以制动方向盘的旋转。

    Positioning system utilizing GPS satellites
    8.
    发明授权
    Positioning system utilizing GPS satellites 失效
    GPS卫星定位系统

    公开(公告)号：US5931890A

    公开(公告)日：1999-08-03

    申请号：US808955

    申请日：1997-02-19

    申请人： Yoshihisa Suwa ,  Seiji Ishikawa ,  Tomohiro Yamamoto ,  Takeshi Ito ,  Tomio Yasuda

    发明人： Yoshihisa Suwa ,  Seiji Ishikawa ,  Tomohiro Yamamoto ,  Takeshi Ito ,  Tomio Yasuda

    IPC分类号： G01C21/00 ,  G01S1/00 ,  G01S19/22 ,  G01S19/28 ,  G01S19/49 ,  G06F165/00

    CPC分类号： G01S19/42 ,  G01S19/22 ,  G01S19/28

    摘要： A positioning system is disclosed in which a rate of change .DELTA..DELTA.f in a Doppler shift .DELTA.f of the radio wave transmitted from a GPS satellite is detected in order to determine whether or not an extraordinary radio wave as caused by a multi-path or the like is being received, and a GPS satellite from which an extraordinary radio wave is received is excluded from a group of GPS satellites which are utilized in a positioning calculation. A difference .DELTA.f between a signal frequency f0 transmitted from a GPS satellite and a signal frequency fR receiver is calculated, and a rate of change .DELTA..DELTA.f in the difference .DELTA.f is also calculated. The position of a receiver is calculated on the basis of information transmitted from a plurality of GPS satellites for which the rate of change .DELTA..DELTA.f is equal to or less than a first threshold value, or .DELTA..DELTA.f.ltoreq.30 Hz/s, and the azimuth of a traveling direction of the receiver is calculated on the basis of information transmitted from a plurality of GPS satellites for which the rate of change .DELTA..DELTA.f is equal to or less than a second smaller threshold value or .DELTA..DELTA.f.ltoreq.15 Hz/s.

    摘要翻译： 公开了一种定位系统，其中检测到从GPS卫星发射的无线电波的多普勒频移DELTA f中的变化率DELTA DELTA f，以便确定由多路径引起的非凡无线电波 正在接收，并且从定位计算中使用的一组GPS卫星中排除从其接收非正常无线电波的GPS卫星。 计算从GPS卫星发送的信号频率f0和信号频率fR接收机之间的差ΔTA，并且还计算差ΔTATA中的变化率DELTA DELTA f。 基于从变化率DELTA DELTA f等于或小于第一阈值或DELTA DELTA f 30Hz / s的多个GPS卫星发送的信息来计算接收机的位置 并且基于从其变化率DELTA DELTA f等于或小于第二较小阈值或DELTA DELTA f'的多个GPS卫星发送的信息来计算接收机的行进方向的方位角， / = 15Hz / s。