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    • 151. 发明申请
    • FREQUENCY ESTIMATION
    • 频率估计
    • US20150276831A1
    • 2015-10-01
    • US14433613
    • 2013-10-03
    • IMPERIAL INNOVATIONS LIMITED
    • Danilo MandicYili XiaDahir Dini
    • G01R23/02G01R19/00
    • G01R23/02G01R19/00G01R19/2513G01R23/04
    • Determining a property of an electrical signal at a node instant at the current instant (INSTC); determining a previous function indicative of a property of the signal at the node at a previous instant; determining an error function in a previous frequency estimation at the node at a previous instant; determining a first current function indicative of the property of the signal at the node at INSTC in accordance with the determined property, the previous function, and the error function; receiving, from another node, a second current function indicative of a property of an electrical signal at the at least one other node at INSTC; combining the first current function and the second current function to produce a current combined function (CCF) indicative of a property of the signal at the node at INSTC; and estimating a current frequency of the signal at the node in accordance with the CCF.
    • 确定在当前时刻(INSTC)瞬间的节点处的电信号的属性; 确定在先前时刻表示节点处的信号的属性的先前函数; 确定在先前时刻在所述节​​点处的先前频率估计中的误差函数; 根据确定的属性,先前的功能和误差函数确定在INSTC处指示节点处的信号的属性的第一当前函数; 从另一个节点接收指示在INSTC的至少一个其他节点处的电信号的属性的第二当前函数; 组合第一电流功能和第二电流功能以产生指示INSTC处节点处的信号的特性的当前组合功能(CCF); 以及根据CCF估计节点处的信号的当前频率。
    • 157. 发明申请
    • Ultrasonic Non-Destructive Testing
    • 超声波无损检测
    • US20130098158A1
    • 2013-04-25
    • US13712257
    • 2012-12-12
    • IMPERIAL INNOVATIONS LIMITED
    • Peter CawleyFrederick Bert Cegla
    • G01N29/28
    • G01N29/34G01N29/069G01N29/2412G01N29/28G01N2291/0234G01N2291/02854G01N2291/0421G01N2291/0422G01N2291/044G10K11/24
    • An apparatus and method for ultrasonic non-destructive testing provides an elongate strip of ultrasound transmissive material coupled at a proximal end to an object under test. The elongate strip has a transverse cross-section with a width and thickness giving an aspect ratio greater than unity and matched to the ultrasonic transducer such that excitation induces a substantially non-dispersive ultrasonic signal to propagate along the elongate strip to the proximal end and to enter the object under test. These non-dispersive pulses are particularly suited for time-of-flight measurements, thickness measurements, crack measurements and the like. The elongate strip helps to separate the transducer from a potentially hostile environment associated with the object under test. The elongate strip also has a large area of contact with the object under test allowing efficient transmission of energy into the object under test.
    • 用于超声波无损检测的装置和方法提供了一种在近端与待测物体耦合的超声波透射材料的细长带。 细长条带具有宽度和厚度的横向横截面,其给出大于1的长宽比并与超声波换能器匹配,使得激励引起基本上非分散的超声波信号沿着细长带传播到近端,并且 输入被测对象。 这些非分散脉冲特别适用于飞行时间测量,厚度测量,裂纹测量等。 细长条有助于将换能器与与被测物体相关联的潜在恶意环境分离。 细长带还具有与待测物体的大面积的接触,允许能量有效地传递到被测物体内。