Fault detection in an electric power-assisted steering system
    1.
    发明授权
    Fault detection in an electric power-assisted steering system 有权
    电力辅助转向系统故障检测

    公开(公告)号:US07136733B2

    公开(公告)日:2006-11-14

    申请号:US10650614

    申请日:2003-08-28

    IPC分类号: B62D6/00

    CPC分类号: H02P6/06 B62D5/0487 H02K29/08

    摘要: A method and system for detecting faults in an electric power-assisted steering system includes determining a voltage vector of an electric power-assisted steering motor and measuring a current vector of the motor. Acceptable angular relationships are defined between the voltage vector and the current vector, which are then compared to find a fault if the angle does not meet the acceptable angular relationship. Additionally, motor direction and position can also be used against an angular check of the voltage and/or current vector. Similarly, torque direction can be used. In this way, several different faults can be determined dynamically under transient conditions.

    摘要翻译: 一种用于检测电力辅助转向系统中的故障的方法和系统,包括确定电动助力转向电动机的电压矢量并测量电动机的电流矢量。 在电压矢量和电流矢量之间定义可接受的角度关系,然后将其与当前角度不符合可接受的角度关系进行比较以发现故障。 另外,马达方向和位置也可以用于抵抗电压和/或电流矢量的角度检查。 类似地,可以使用扭矩方向。 以这种方式,可以在瞬态条件下动态地确定几个不同的故障。

    Method and apparatus for measuring torque and flux current in a synchronous motor
    2.
    发明授权
    Method and apparatus for measuring torque and flux current in a synchronous motor 失效
    用于测量同步电机中的转矩和磁通电流的方法和装置

    公开(公告)号:US06738718B2

    公开(公告)日:2004-05-18

    申请号:US10108092

    申请日:2002-03-27

    IPC分类号: G01L300

    CPC分类号: G01R31/343 H02P21/22

    摘要: An apparatus (100) for measuring torque and flux current in an AC synchronous drive motor (108), having a shaft (110) magnetically coupled to an a-phase stator, a b-phase stator and a c-phase stator, includes a shaft position indicator (112) that is coupled to the shaft (110) and that generates a position signal indicative of a position of the shaft (110). A current sensing circuit (114) generates a current signal indicative of instantaneous direct link current of the motor (108). A sample and hold amplifier (116) samples the current signal when a trigger input is asserted. A processor (120) asserts the trigger input from trigger generation (124). The processor (120) calculates torque generated by the motor (108) and flux current in the motor (108) based on the current signal value and decoding algorithm (122).

    摘要翻译: 一种用于测量AC同步驱动电动机(108)中的扭矩和磁通电流的装置(100),其具有磁耦合到a相定子,b相定子和c相定子的轴(110),包括: 轴位置指示器(112),其联接到所述轴(110)并且产生指示所述轴(110)的位置的位置信号。 电流感测电路(114)产生指示电动机(108)的瞬时直接链接电流的电流信号。 当触发输入被断言时,采样和保持放大器(116)对当前信号进行采样。 处理器(120)从触发器生成(124)断言触发输入。 处理器(120)基于当前信号值和解码算法(122)计算马达(108)产生的扭矩和马达(108)中的通量电流。