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    • 3. 发明授权
    • Detecting and classifying hard and soft inclusions in liquid metal
    • 检测和分类液态金属中的硬和软夹杂物
    • US06337564B2
    • 2002-01-08
    • US09290597
    • 1999-04-13
    • Richard A. ManziniDavid H. De Young
    • Richard A. ManziniDavid H. De Young
    • G01N2700
    • G01N33/206G01N15/12
    • Apparatus and method for providing a classification of inclusions in molten metal. The apparatus and method include the steps of and means for obtaining an analog signal stream from a data collection apparatus, passing the analog signal stream through an analog to digital converter to convert the analog signal stream to a digital signal stream, and partitioning the digital signal stream into a discrete time frame of 5 milliseconds. The digital signal stream is vector normalized to provide a normalized signal stream having a largest amplitude magnitude of 1. The normalized signal stream is compared to a control of a prototype shape for determining a classification for the digital signal stream over the discrete time frame by decision logic to determine hard inclusions versus soft inclusions in the liquid metal. In one aspect, the normalized signal stream is passed through a decision module having at least one threshold unit and at least one digital logic table to make a decision of a soft, deformable inclusion or a hard inclusion. In one embodiment, the classification and size of the inclusions are counted in an histogram of classification and a histogram of size. The classification and size of the inclusions are viewed in a graphical user interface.
    • 用于提供熔融金属中夹杂物分类的装置和方法。 该装置和方法包括从数据采集装置获得模拟信号流的步骤和装置,使模拟信号流通过模数转换器,将模拟信号流转换为数字信号流,并分割数字信号 流入5毫秒的离散时间帧。 数字信号流被矢量归一化以提供具有最大幅度幅度为1的归一化信号流。归一化信号流与原型形状的控制进行比较,用于通过决定确定离散时间帧上的数字信号流的分类 确定液态金属中的硬夹杂物与软夹杂物的逻辑。 在一个方面,归一化信号流通过具有至少一个阈值单元和至少一个数字逻辑表的判定模块,以做出软的,可变形的包含或硬夹杂的决定。 在一个实施例中,夹杂物的分类和尺寸在分类的直方图和尺寸的直方图中进行计数。 夹杂物的分类和尺寸在图形用户界面中查看。