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    • 1. 发明申请
    • RECOVERY OF CALIBRATED CENTER STEERING POSITION AFTER LOSS OF BATTERY POWER
    • 电池电量损失后校准中心转向位置的恢复
    • WO2006137991A1
    • 2006-12-28
    • PCT/US2006/017295
    • 2006-05-02
    • TRW AUTOMOTIVE U.S. LLCLU, EngelbertMCLAUGHLIN, Kevin
    • LU, EngelbertMCLAUGHLIN, Kevin
    • B62D15/02
    • B62D15/0245B62D15/0235
    • The steering angle of a vehicle is monitored using position sensors of an electric motor of an electric power assisted steering (EPAS) system. A position of the electric motor corresponding to the straight-ahead, center position of the steering system is stored in non-volatile memory during a steering calibration procedure, such as an end-of-line calibration in a vehicle assembly plant. Following power loss due to a dead battery, a steering angle zeroing procedure performed in a vehicle stability control (VSC) system generates a center position with enough accuracy to be within one electrical cycle of the motor. The pre-stored electric motor position is then used to determine the electrical cycle where the center position was located, and accurate monitoring of steering angle is resumed.
    • 使用电动助力转向(EPAS)系统的电动机的位置传感器来监视车辆的转向角度。 对应于转向系统的直线中心位置的电动机的位置在转向校准程序期间被存储在非易失性存储器中,诸如在车辆组装工厂中的在线校准。 在由于电池电量不足引起的功率损耗之后,在车辆稳定性控制(VSC)系统中执行的转向角调零程序产生具有足够精度的中心位置以在电动机的一个电循环内。 然后使用预存的电动机位置来确定中心位置所在的电气循环,并恢复对转向角的精确监控。
    • 3. 发明公开
    • ELECTRICAL POWER ASSISTED STEERING SYSTEM
    • 电动助力转向系统
    • EP1951564A1
    • 2008-08-06
    • EP06808657.8
    • 2006-11-23
    • TRW Automotive U.S. LLCTRW Limited
    • FERNANDEZ, Angel, Luis, AndresMCLAUGHLIN, Kevin
    • B62D5/04
    • B62D5/0466
    • An electric power assisted steering system for a vehicle, comprising: a steering mechanism which operatively connects a steering wheel to road wheels of the vehicle, a torque sensor (6) arranged to, in use, produce a torque signal indicative of the torque carried by a portion of the steering mechanism, an electric motor (1) operatively connected to the steering mechanism, a signal processing unit (7) arranged to, in use, produce from the torque signal a torque demand signal (8) representative of a torque to be applied to the steering mechanism by the motor, the signal processing unit comprising a first calculating unit (12) arranged to calculate an initial torque demand signal (10) dependent on the torque signal, and a second calculating unit (13) arranged to, in use, calculate a torque damping signal (11) indicative of an amount the initial torque signal is to be damped in order to generate the torque demand signal, and a motor drive stage arranged to provide, in use, a drive current to the motor responsive to the torque demand signal, in which the second calculating unit comprises an input for a signal dependent upon the torque demand signal, a differentiator (15), arranged to, in use, differentiate the input signal dependent upon the torque signal and a high pass filter arranged to filter the input signal to reduce low frequency components thereof.
    • 1。一种用于车辆的电动助力转向系统,包括:操纵机构,其可操作地将方向盘连接至所述车辆的车轮;扭矩传感器(6),其被布置成在使用中产生扭矩信号,所述扭矩信号表示由 所述转向机构的一部分,可操作地连接至所述转向机构的电动机(1),信号处理单元(7),所述信号处理单元(7)在使用中从所述转矩信号产生表示转矩的转矩要求信号(8) 所述信号处理单元包括第一计算单元(12)和第二计算单元(13),所述第一计算单元布置成根据所述扭矩信号计算初始扭矩需求信号(10),所述第二计算单元(13) 在使用中,计算指示初始扭矩信号将被衰减以便产生扭矩需求信号的量的扭矩阻尼信号(11);以及电机驱动级,其被设置为在使用中提供驱动电流 所述第二计算单元包括用于取决于所述扭矩需求信号的信号的输入,所述微分器(15)被设置为在使用时根据所述扭矩信号来微分所述输入信号 以及高通滤波器,用于对输入信号进行滤波以降低其低频分量。
    • 10. 发明申请
    • ELECTRICAL POWER ASSISTED STEERING SYSTEM
    • 电力辅助转向系统
    • WO2007060435A1
    • 2007-05-31
    • PCT/GB2006/004383
    • 2006-11-23
    • TRW AUTOMOTIVE U.S. L.L.C.TRW LUCAS VARITY ELECTRIC STEERING LIMITEDFERNANDEZ, Angel, Luis, AndresMCLAUGHLIN, Kevin
    • FERNANDEZ, Angel, Luis, AndresMCLAUGHLIN, Kevin
    • B62D5/04
    • B62D5/0466
    • An electric power assisted steering system for a vehicle, comprising: a steering mechanism which operatively connects a steering wheel to road wheels of the vehicle, a torque sensor (6) arranged to, in use, produce a torque signal indicative of the torque carried by a portion of the steering mechanism, an electric motor (1) operatively connected to the steering mechanism, a signal processing unit (7) arranged to, in use, produce from the torque signal a torque demand signal (8) representative of a torque to be applied to the steering mechanism by the motor, the signal processing unit comprising a first calculating unit (12) arranged to calculate an initial torque demand signal (10) dependent on the torque signal, and a second calculating unit (13) arranged to, in use, calculate a torque damping signal (11) indicative of an amount the initial torque signal is to be damped in order to generate the torque demand signal, and a motor drive stage arranged to provide, in use, a drive current to the motor responsive to the torque demand signal, in which the second calculating unit comprises an input for a signal dependent upon the torque demand signal, a differentiator (15), arranged to, in use, differentiate the input signal dependent upon the torque signal and a high pass filter arranged to filter the input signal to reduce low frequency components thereof.
    • 一种用于车辆的电动辅助转向系统,包括:将方向盘操作地连接到车辆的车轮的转向机构,扭矩传感器(6),其在使用中布置成产生表示由 转向机构的一部分,可操作地连接到转向机构的电动机(1),信号处理单元(7),其在使用中被设置为从扭矩信号产生表示扭矩的转矩需求信号(8) 所述信号处理单元包括:第一计算单元,其被配置为根据所述转矩信号计算初始转矩需求信号;以及第二计算单元,其被布置为, 在使用中,计算表示所述初始转矩信号要被衰减的量的扭矩阻尼信号(11),以产生所述转矩需求信号;以及马达驱动级,其被设置为在使用中提供驱动电流 对所述电动机响应于所述转矩需求信号,所述第二计算单元包括取决于所述转矩需求信号的信号的输入;微分器(15),其被布置为在使用中根据所述转矩信号来区分所述输入信号 以及布置成对输入信号进行滤波以降低其低频分量的高通滤波器。