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Patent Agency Ranking
公开(公告)号：US20170067854A1
公开(公告)日：2017-03-09
申请号：US14847751
申请日：2015-09-08
Applicant: Hitachi, Ltd
Inventor： Isao Hoda , Hua Zeng , Masayoshi Takahashi , Hiroki Funato
CPC classification number: G01N27/82 , B23K11/11 , B23K31/125 , G01N27/72 , G01N27/87 , G01N27/9046 , G01R33/10 , G01R33/12
Abstract: An apparatus and method for inspecting the quality of a weld under test in a structure having a plurality of spaced apart welds. Two probes are placed on opposite sides of the structure so that a current path is formed through the weld under test. The probes are energized with alternating current at a known frequency. The magnetic flux generated from the current flow through the probes and at least one of the spaced apart welds is then measured and subsequently compared with magnetic flux data previously determined and representing weld quality.
Abstract translation: 一种用于在具有多个间隔开的焊缝的结构中检查被测焊缝质量的装置和方法。 两个探针放置在结构的相对两侧，使得通过被测焊缝形成电流路径。 探头以已知频率的交流电通电。 然后测量从流过探头的电流产生的磁通量和至少一个间隔开的焊缝，并随后与先前确定的并表示焊接质量的磁通量数据进行比较。
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公开(公告)号：US09618480B2
公开(公告)日：2017-04-11
申请号：US14847751
申请日：2015-09-08
Applicant: Hitachi, Ltd
Inventor： Isao Hoda , Hua Zeng , Masayoshi Takahashi , Hiroki Funato
CPC classification number: G01N27/82 , B23K11/11 , B23K31/125 , G01N27/72 , G01N27/87 , G01N27/9046 , G01R33/10 , G01R33/12
Abstract: An apparatus and method for inspecting the quality of a weld under test in a structure having a plurality of spaced apart welds. Two probes are placed on opposite sides of the structure so that a current path is formed through the weld under test. The probes are energized with alternating current at a known frequency. The magnetic flux generated from the current flow through the probes and at least one of the spaced apart welds is then measured and subsequently compared with magnetic flux data previously determined and representing weld quality.
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公开(公告)号：US20150028888A1
公开(公告)日：2015-01-29
申请号：US13950403
申请日：2013-07-25
Applicant: Hitachi, Ltd.
Inventor： Yoshiyuki Tsuchie , Hua Zeng , Masayoshi Takahashi , Hiroki Funato
IPC: G01R29/26
CPC classification number: G01R29/26 , G01R29/0814 , G01R31/001 , G01R31/007
Abstract: A system and method for identifying an electrical noise propagation path through an object, such as an automotive vehicle, from a source of periodic electrical noise. An electrical noise sensor is positioned at a selected area on the object which generates an output signal representative of the magnitude of the electrical noise. A trigger generator generates a trigger signal in synchronism with a source of periodic electrical noise and that trigger signal is connected as an input signal to measurement equipment connected to the sensor to initiate electrical noise reading by the sensor. A recorder then records the output from the sensor. The electrical noise sensor is moved to different areas on the object to determine the electrical noise propagation path.
Abstract translation: 用于从周期性电噪声源识别通过物体（例如机动车辆）的电噪声传播路径的系统和方法。 电噪声传感器位于物体上的选定区域，其产生表示电噪声幅度的输出信号。 触发发生器与周期性电噪声源同步产生触发信号，并且触发信号作为输入信号连接到连接到传感器的测量设备，以启动传感器的电噪声读数。 然后记录仪记录传感器的输出。 电噪声传感器被移动到物体上的不同区域以确定电噪声传播路径。
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公开(公告)号：US20160182001A1
公开(公告)日：2016-06-23
申请号：US14576421
申请日：2014-12-19
Applicant: Hitachi, Ltd
Inventor： Hua Zeng , Yoshiyuki Tsuchie , Masayoshi Takahashi , Hiroki Funato
IPC: H03H1/00
CPC classification number: H03H1/0007
Abstract: A common mode noise filter adapted for connection in series between a noise source and a load having a first and second inductor connected in series respectively between the noise source and the load. A capacitor which exhibits stray inductance is connected in series with a third inductor having its other end connected to a junction of the first and second inductors. The first, second, and third inductors are selected and positioned relative to each other so that an absolute value of the third inductor and mutual inductance of the first, second, and third inductors minus the stray inductance of the capacitor is minimized.
Abstract translation: 一种共模噪声滤波器，其适于串联连接在噪声源和具有分别连接在噪声源和负载之间的第一和第二电感器的负载之间。 具有杂散电感的电容器与其另一端连接到第一和第二电感器的结的第三电感器串联连接。 第一，第二和第三电感器相对于彼此选择和定位，使得第三电感器的绝对值和第一，第二和第三电感器的互感减去电容器的杂散电感最小化。
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公开(公告)号：US09285411B2
公开(公告)日：2016-03-15
申请号：US13950403
申请日：2013-07-25
Applicant: Hitachi, Ltd.
Inventor： Yoshiyuki Tsuchie , Hua Zeng , Masayoshi Takahashi , Hiroki Funato
CPC classification number: G01R29/26 , G01R29/0814 , G01R31/001 , G01R31/007
Abstract: A system and method for identifying an electrical noise propagation path through an object, such as an automotive vehicle, from a source of periodic electrical noise. An electrical noise sensor is positioned at a selected area on the object which generates an output signal representative of the magnitude of the electrical noise. A trigger generator generates a trigger signal in synchronism with a source of periodic electrical noise and that trigger signal is connected as an input signal to measurement equipment connected to the sensor to initiate electrical noise reading by the sensor. A recorder then records the output from the sensor. The electrical noise sensor is moved to different areas on the object to determine the electrical noise propagation path.
Abstract translation: 用于从周期性电噪声源识别通过物体（例如机动车辆）的电噪声传播路径的系统和方法。 电噪声传感器位于物体上的选定区域，其产生表示电噪声幅度的输出信号。 触发发生器与周期性电噪声源同步产生触发信号，并且触发信号作为输入信号连接到连接到传感器的测量设备，以启动传感器的电噪声读数。 然后记录仪记录传感器的输出。 电噪声传感器被移动到物体上的不同区域以确定电噪声传播路径。
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