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    ELECTRIC POWER STEERING DEVICE
    3.
    发明公开
    ELECTRIC POWER STEERING DEVICE 有权

    公开(公告)号：EP3141460A4

    公开(公告)日：2018-02-21

    申请号：EP15789473

    申请日：2015-04-16

    申请人： NSK LTD

    发明人： KITAZUME TETSUYA

    IPC分类号： B62D5/04 ,  B62D6/00 ,  B62D101/00 ,  B62D113/00 ,  B62D117/00 ,  B62D119/00 ,  B62D125/00 ,  B62D137/00

    CPC分类号： B62D5/0466 ,  B62D5/0409 ,  B62D6/002 ,  B62D15/0235

    摘要： [Problem] An object of the present invention is to provide an electric power steering apparatus that is possible to actively return the steering wheel to the neutral point at the vehicle running state to give back to a straight running state by calculating the return control current corresponding to the steering angle and the motor angular velocity/Gr ratio and by compensating the current command value. [Means for solving the problem] The present invention comprises an active-return control section that calculates a return control current based on a steering angle, the vehicle speed and a motor angular velocity/Gr ratio, and drives the motor by a compensated-current command value obtained by subtracting the return control current from the current command value, wherein the active-return control section comprises a base-return control current calculating section that calculates a base-return control current, a target steering velocity calculating section that calculates a target steering velocity, a return control gain calculating section that obtains a deviation between the target steering velocity and the motor angular velocity/Gr ratio and sign-processes, and calculates a return control gain by at least two among a P-control calculation, an I-control calculation and a D-control calculation, a limiter that limits a maximum value of the return control gain, and a correcting section to output the return control current by correcting the base-return control current with an output of the limiter.

    SYSTEM AND METHOD FOR DETECTING FAILURE OF A STEERING ANGLE SENSOR
    4.
    发明公开
    SYSTEM AND METHOD FOR DETECTING FAILURE OF A STEERING ANGLE SENSOR 审中-公开
    用于检测转向角传感器故障的系统和方法

    公开(公告)号：EP3202642A1

    公开(公告)日：2017-08-09

    申请号：EP16154575.1

    申请日：2016-02-05

    申请人： Hiwin Technologies Corp.

    发明人： YANG, Chih-Wei

    IPC分类号： B62D5/04 ,  B62D15/02

    CPC分类号： B62D5/049 ,  B62D15/0215 ,  B62D15/0235

    摘要： A system and method for detecting failure of a steering angle sensor include: a steering angle sensor (10), an angular position encoder (60) and an electronic control unit (20). The electronic control unit (20) reads an initial value of the steering wheel rotation angle signal and estimates a rotation angle of a steering wheel based on the motor rotation angle signal, the electronic control unit checks if a difference between an actual value of the steering wheel rotation angle signal and an estimated rotation angle of the steering wheel is smaller than a predetermined value or not, if the difference is bigger than the predetermined value, it means that the steering wheel rotation angle signal fails, and the estimated rotation angle of the steering wheel serves as a substitute signal and is sent to the electronic control unit.

    摘要翻译： 用于检测转向角传感器故障的系统和方法包括：转向角传感器（10），角度位置编码器（60）和电子控制单元（20）。 电子控制单元（20）读取方向盘旋转角度信号的初始值并且基于电动机旋转角度信号来估计方向盘的旋转角度，电子控制单元检查转向装置的实际值 车轮旋转角度信号和方向盘的估计旋转角度是否小于预定值，如果差值大于预定值，则表示方向盘旋转角度信号失效，并且估计的旋转角度 方向盘作为替代信号发送给电子控制单元。

    AN ELECTRIC POWER ASSISTED STEERING SYSTEM
    6.
    发明公开
    AN ELECTRIC POWER ASSISTED STEERING SYSTEM 审中-公开
    电动助力转向系统

    公开(公告)号：EP3160826A1

    公开(公告)日：2017-05-03

    申请号：EP15741247.9

    申请日：2015-06-23

    申请人： TRW Limited

    发明人： FARRELLY, James, Owen, Patrick

    IPC分类号： B62D15/02 ,  B62D5/04 ,  G01L5/22 ,  B62D5/00

    CPC分类号： B62D6/10 ,  B62D5/0409 ,  B62D5/0463 ,  B62D5/0484 ,  B62D5/049 ,  B62D5/0493 ,  B62D15/0215 ,  B62D15/0235 ,  G01L3/102 ,  G01L5/221

    摘要： An electric power assisted steering system comprising a torque sensor assembly comprising an input shaft, an output shaft, a torsion bar that interconnects the input shaft and the output shaft, and a processing means which produces a torque signal indicative of the torque carried by the torsion bar, an electric motor that is connected to the output shaft, and a motor position sensor that provides a motor position signal dependent on the angular position of the motor rotor that repeats each time the motor has rotated through a known angular range. The apparatus further including processing means that generates an absolute output shaft position signal from the motor position signal by adding to the output of the motor position sensor a first term indicative of the fixed offset between the motor position sensor zero position and the zero position of the input shaft and a second term indicative of the number of turns of the motor rotor away from the zero position of the input shaft. The processing means determines the base motor position value at start up of the system by comparing the motor position signal from the position sensor with the signal from the sensor associated with the sensing means of the upper shaft to determine three candidates and during subsequent unpowered motion of the steering system rules out candidates until only one remains plausible candidate.

    摘要翻译： 一种电动助力转向系统，包括转矩传感器组件，该转矩传感器组件包括输入轴，输出轴，将输入轴和输出轴相互连接的扭力杆，以及处理装置，该处理装置产生表示扭转所承受的扭矩的扭矩信号 杆，连接到输出轴的电动机以及电动机位置传感器，该电动机位置传感器根据电动机转子的角度位置提供电动机位置信号，该电动机位置信号每次电动机已经旋转经过已知的角度范围时重复。 该装置进一步包括处理装置，该处理装置通过向电动机位置传感器的输出添加第一项来产生来自电动机位置信号的绝对输出轴位置信号，该第一项表示电动机位置传感器零位置与电动机位置传感器的零位置之间的固定偏移 输入轴以及表示电机转子远离输入轴的零位置的匝数的第二项。 处理装置通过将来自位置传感器的电动机位置信号与来自与上轴的感测装置相关联的传感器的信号进行比较来确定系统启动时的基本电动机位置值，以确定三个候选并且在随后的无动力 转向系统排除了候选人，直到只有一个候选人仍然是合理的候选人。

    Electric power steering system
    7.
    发明公开
    Electric power steering system 有权
    电力系统

    公开(公告)号：EP2774829A1

    公开(公告)日：2014-09-10

    申请号：EP14156933.5

    申请日：2014-02-27

    申请人： JTEKT CORPORATION

    发明人： Kichise, Hiroshi

    IPC分类号： B62D15/02 ,  B62D5/04 ,  B62D6/00 ,  B62D3/12

    CPC分类号： B62D5/0463 ,  B62D5/0409 ,  B62D5/0496 ,  B62D15/0235

    摘要： In an electric power steering system, an ECU (29) calculates a steering angle of a steering wheel (2) based on an output of a rotation angle sensor (28) and an EPS gear ratio (a gear ratio between a rack portion (13a) and a pinion shaft (11a) and a speed reducing ratio of a transmission mechanism (24)). The ECU (29) calculates a correction amount for canceling a steering deviation caused due to a temperature change, based on a temperature of a rack shaft (13) detected by a temperature sensor (15) and a map (M) stored in a memory (29a), and corrects the correction amount by adding the correction amount to the calculated steering angle.

    摘要翻译： 在电动助力转向系统中，ECU（29）基于旋转角度传感器（28）的输出和EPS齿轮比（齿条部（13a）之间的齿轮比）来计算方向盘（2）的转向角 ）和小齿轮轴（11a）和变速机构（24）的减速比）。 ECU（29）基于由温度传感器（15）检测到的齿条轴（13）的温度和存储在存储器中的映射（M），计算用于消除由于温度变化引起的转向偏差的校正量 （29a），并且通过将校正量与计算出的转向角相加来校正校正量。

    METHOD FOR CONTROLLING A STEERING APPARATUS
    10.
    发明公开
    METHOD FOR CONTROLLING A STEERING APPARATUS 有权
    一种用于控制转向装置

    公开(公告)号：EP2563638A1

    公开(公告)日：2013-03-06

    申请号：EP10803570.0

    申请日：2010-12-22

    申请人： ThyssenKrupp Presta AG

    发明人： SOÓS, István

    IPC分类号： B62D5/04

    CPC分类号： B62D5/0424 ,  B62D5/0481 ,  B62D15/0235

    摘要： The invention relates to a Method to control a steering apparatus comprising following steps: (A) Checking at every time whether there is a straight run state of the vehicle or not; (B) If the straight run state of vehicle is reached, determines the instantaneous rack position (R) and calculates a new offset as to a difference between the instantaneous rack position (R) and the first position (R0) of said rack (7); (C) Checking in a first justify operation, whether the new offset of the rack position in the straight run state of vehicle to the first rack position differs to an old offset, which where determined as the new offset at an earlier time, and set in this case the first justify result as to true and otherwise as to false; (D) Checking in a second justify operation, whether the pull situation value exceeds a threshold value and set in this case the second justify result as to true and otherwise as to false; (E) If the first and second justify results are true, set a suspension device status as to a "suspension damaged" status; (F) If the first justify result is true and the second justify result is false, set a belt jump status as to a "belt jumped" status.