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    • 5. 发明授权
    • Redundant sensor apparatus for determining engine speed and timing values
    • 用于确定发动机速度和定时值的冗余传感器装置
    • US6019086A
    • 2000-02-01
    • US86925
    • 1998-05-28
    • Matthew L. SchneiderWilliam A. Monette
    • Matthew L. SchneiderWilliam A. Monette
    • F02P7/077G01D3/08G01D5/14G01D5/244G01D5/245G01M15/04G01P1/02G01P3/487G01P3/489G01M15/00
    • G01D5/147F02P7/0775G01D3/08G01D5/24476G01D5/2457G01M15/046G01P1/026G01P3/487G01P3/489F02D2200/1015
    • An engine control system includes a speed sensor apparatus for providing signals to an engine control module (ECM) indicative of the speed and timing of an internal combustion engine. The apparatus includes a primary and a secondary Hall device affixed to one pole of a dipole magnet. Independent flexible circuits connect each of the Hall devices to an output connector adapted to receive a cable connected to the ECM. The magnet, primary and secondary sensors and primary and secondary flexible circuits are potted and encased within a sensor housing that is configured for sealed mounting to a housing surrounding the timing wheel of the engine. The outputs from the two sensors are independent of each other and are simultaneously provided to the ECM. The ECM includes means for providing the output from the primary sensor to engine control routines utilizing speed and timing information while the primary sensor is operational. Means are also provided that derive a phase difference value between the primary and secondary outputs. In the event that the primary sensor fails, the ECM modifies the secondary sensor output by the phase difference value and provides the modified output to the engine control routines. In this manner, the engine control routines are provided with a consistent and continuous speed and timing signal even when one sensor fails.
    • 发动机控制系统包括用于向指示内燃机的速度和时间的发动机控制模块(ECM)提供信号的速度传感器装置。 该装置包括固定到偶极子磁体的一极的主霍尔器件和次霍尔器件。 独立的柔性电路将每个霍尔器件连接到适于接收连接到ECM的电缆的输出连接器。 磁体,主要和次要传感器以及主要和次要柔性电路被封装并封装在传感器外壳内,该传感器外壳被配置为密封安装到围绕发动机正时轮的壳体。 两个传感器的输出彼此独立,同时提供给ECM。 ECM包括用于在主传感器可操作时利用速度和定时信息将主传感器的输出提供给发动机控制程序的装置。 还提供了导出初级和次级输出之间的相位差值的装置。 在主传感器发生故障的情况下,ECM将辅助传感器输出修改为相位差值,并将修改的输出提供给发动机控制程序。 以这种方式,即使一个传感器发生故障,发动机控制程序也具有一致且连续的速度和定时信号。
    • 7. 发明授权
    • Variable reluctance position sensor
    • 可变磁阻位置传感器
    • US07302940B2
    • 2007-12-04
    • US11234905
    • 2005-09-26
    • Matthew L. SchneiderAlfred Schuppe
    • Matthew L. SchneiderAlfred Schuppe
    • F02M25/07F02B47/08G01B7/14H01L43/08
    • G01D5/2013F02M26/48F02M26/54F02M26/72
    • A position sensor is disclosed having a transducer formed by a Hall-effect device and permanent magnet secured within a housing on either side of a low permeability gap. A target secured to an active member, such as an EGR valve plunger moves within the gap. The target has a flux modulating property that varies with position along a direction of travel. In one embodiment, the reluctance of the target varies with position. Variable reluctance is achieved in some embodiments by varying the cross section of the target with position. In some embodiments, a second target having substantially constant reluctance secures to the active member and moves within a gap defined by a second transducer. The output of the second transducer is used to normalize the output of the first transducer and compensate for anomalies such as drift and movement other than in the direction of travel of the active member.
    • 公开了一种位置传感器,其具有通过霍尔效应装置形成的换能器和固定在低导磁率间隙两侧的壳体内的永磁体。 固定到活动构件(例如EGR阀柱塞)上的目标在间隙内移动。 目标具有随行进方向的位置而变化的通量调节特性。 在一个实施例中,目标的磁阻随位置而变化。 在一些实施例中通过改变具有位置的目标的横截面来实现可变磁阻。 在一些实施例中,具有基本恒定的磁阻的第二目标固定到有源构件并且在由第二换能器限定的间隙内移动。 第二传感器的输出用于对第一传感器的输出进行归一化,并补偿除活动构件的行进方向之外的异常,例如漂移和运动。