Current sensing in a two-phase motor
    1.
    发明申请
    Current sensing in a two-phase motor 有权
    两相电机中的电流检测

    公开(公告)号:US20060125513A1

    公开(公告)日:2006-06-15

    申请号:US11355708

    申请日:2006-02-16

    IPC分类号: G01R31/34

    摘要: A method and apparatus for measuring current by a single sensor for two motor phases driven by first and second set of switches to drive respective first and second phases of a motor under control of PWM signals. A first step 100 includes reading a duty cycle of each winding drive current. A next step configures 104, 110, 114, 116, 118 the PWM signals to provide at least one timing window wherein at least of one of the windings of the motor is being driven while the other winding is not being driven, and to provide a relative timing offset of approximately one-half cycle between the pulse width modulation signals driving a first winding and a second winding of the motor. A next step 90 includes gating the switches with the configured PWM signals. A next step 95 includes sampling the current of the at least one of the windings with a single sensor.

    摘要翻译: 一种用于由单个传感器测量电流的方法和装置,用于由第一组和第二组开关驱动的两个电动机相位,以在PWM信号的控制下驱动电动机的相应的第一和第二相。 第一步骤100包括读取每个绕组驱动电流的占空比。 下一个步骤将PWM信号配置为104,110,114,116,118以提供至少一个定时窗口,其中电动机的绕组中的至少一个被驱动,而另一个绕组不被驱动,并且提供一个 在驱动第一绕组的脉冲宽度调制信号和电动机的第二绕组之间的大约半个周期的相对定时偏移。 接下来的步骤90包括用配置的PWM信号门控开关。 下一步骤95包括用单个传感器对至少一个绕组的电流进行采样。

    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。

    Fault detection in an electric power-assisted steering system
    3.
    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。

    Current sensing in a two-phase motor

    公开(公告)号:US07109742B2

    公开(公告)日:2006-09-19

    申请号:US10889490

    申请日:2004-07-12

    IPC分类号: G01R31/34

    摘要: A method and apparatus for measuring current by a single sensor for two motor phases driven by first and second set of switches to drive respective first and second phases of a motor under control of PWM signals. A first step 100 includes reading a duty cycle of each winding drive current. A next step configures 104, 110, 114, 116, 118 the PWM signals to provide at least one timing window wherein at least of one of the windings of the motor is being driven while the other winding is not being driven, and to provide a relative timing offset of approximately one-half cycle between the pulse width modulation signals driving a first winding and a second winding of the motor. A next step 90 includes gating the switches with the configured PWM signals. A next step 95 includes sampling the current of the at least one of the windings with a single sensor.

    Current sensing in a two-phase motor
    5.
    发明授权
    Current sensing in a two-phase motor 有权
    两相电机中的电流检测

    公开(公告)号:US07239168B2

    公开(公告)日:2007-07-03

    申请号:US11355708

    申请日:2006-02-16

    IPC分类号: G01R31/34

    摘要: A method and apparatus for measuring current by a single sensor for two motor phases driven by first and second set of switches to drive respective first and second phases of a motor under control of PWM signals. A first step 100 includes reading a duty cycle of each winding drive current. A next step configures 104, 110, 114, 116, 118 the PWM signals to provide at least one timing window wherein at least of one of the windings of the motor is being driven while the other winding is not being driven, and to provide a relative timing offset of approximately one-half cycle between the pulse width modulation signals driving a first winding and a second winding of the motor. A next step 90 includes gating the switches with the configured PWM signals. A next step 95 includes sampling the current of the at least one of the windings with a single sensor.

    摘要翻译: 一种用于由单个传感器测量电流的方法和装置,用于由第一组和第二组开关驱动的两个电动机相位,以在PWM信号的控制下驱动电动机的相应的第一和第二相。 第一步骤100包括读取每个绕组驱动电流的占空比。 下一个步骤将PWM信号配置为104,110,114,116,118以提供至少一个定时窗口,其中电动机的绕组中的至少一个被驱动,而另一个绕组不被驱动,并且提供一个 在驱动第一绕组的脉冲宽度调制信号和电动机的第二绕组之间的大约半个周期的相对定时偏移。 接下来的步骤90包括用配置的PWM信号门控开关。 下一步骤95包括用单个传感器对至少一个绕组的电流进行采样。

    Current sensing in a two-phase motor

    公开(公告)号:US20060006899A1

    公开(公告)日:2006-01-12

    申请号:US10889490

    申请日:2004-07-12

    IPC分类号: G01R31/34

    摘要: A method and apparatus for measuring current by a single sensor for two motor phases driven by first and second set of switches to drive respective first and second phases of a motor under control of PWM signals. A first step 100 includes reading a duty cycle of each winding drive current. A next step configures 104, 110, 114, 116, 118 the PWM signals to provide at least one timing window wherein at least of one of the windings of the motor is being driven while the other winding is not being driven, and to provide a relative timing offset of approximately one-half cycle between the pulse width modulation signals driving a first winding and a second winding of the motor. A next step 90 includes gating the switches with the configured PWM signals. A next step 95 includes sampling the current of the at least one of the windings with a single sensor.