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    • 28. 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。
    • 29. 发明授权
    • EGR fuzzy logic pintle positioning system
    • EGR模糊逻辑枢轴定位系统
    • US07243019B2
    • 2007-07-10
    • US11296175
    • 2005-12-07
    • Kurt D. McLainWenbo Wang
    • Kurt D. McLainWenbo Wang
    • F02M25/07F02B47/08G06F19/00
    • F02D41/0077F02D41/1404F02M26/48F02M26/49Y02T10/47
    • An exhaust gas recirculation (EGR) valve positioning system that positions an EGR valve pintle includes a predicted temperature fuzzy logic module, an under heat fuzzy logic module, an over heat fuzzy logic module, and a multiplication module. The predicted temperature fuzzy logic module determines a predicted temperature of the pintle and generates a predicted temperature modifier based thereon. The under heat fuzzy logic module generates an under heat modifier representing the temperature of the pintle during warmup of an engine. The over heat fuzzy logic module generates an over heat modifier representing the temperature of the pintle after warmup of the engine. The multiplication module communicates with the predicted temperature fuzzy logic module, the under heat fuzzy logic module, and the over heat fuzzy logic module and generates a modifier signal based on the product of the predicted temperature modifier, the under heat modifier, and the over heat modifier.
    • 定位EGR阀枢轴的排气再循环(EGR)阀定位系统包括预测温度模糊逻辑模块,欠热模糊逻辑模块,过热模糊逻辑模块和乘法模块。 预测温度模糊逻辑模块确定枢轴的预测温度并基于此产生预测温度调节器。 底部热模糊逻辑模块在发动机预热期间产生一个低热量调节器,表示针筒的温度。 过热模糊逻辑模块产生一个过热调节器,表示发动机预热后的枢轴温度。 乘法模块与预测温度模糊逻辑模块,欠热模糊逻辑模块和过热模糊逻辑模块进行通信,并根据预测温度调节器,欠热调节器和过热量产生修正信号 修饰语。