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    • 93. 发明专利
    • Method and device for measuring transient inductance
    • 用于测量瞬态电感的方法和装置
    • JP2011145158A
    • 2011-07-28
    • JP2010005884
    • 2010-01-14
    • Technical Research & Development Institute Ministry Of Defence防衛省技術研究本部長
    • SATO YUJIFUJITA MOTONOBU
    • G01R27/26
    • PROBLEM TO BE SOLVED: To provide a method and a device for measuring transient inductance which enable time history of the transient inductance to be calculated with excellent accuracy that has not been attainable by conventional methods. SOLUTION: When an AC signal generator 1 applies a sine wave signal to a coil 3 and a resistor 4, a trigger for an inductance to decrease rapidly is given to the coil 3. First and second voltages e(t) and e R (t), passing through first and second voltage control BPFs 6, 7, are converted from sine wave signals into pulse wave signals by first and second clip circuits 8, 9 is input to a phase comparator 10, and the phase comparator 10 outputs a time history of phase difference ψ(t) between both voltages as a time history of the voltage value. A DSP 11 calculates the time history of the first and second voltages e(t) and e R (t), passing through the first and second voltage control BPFs 6, 7 and a time history of the inductance L(t) for the coil 3 based on a time history of the output voltage from the phase comparator 10. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种用于测量瞬态电感的方法和装置,其使得能够以通过常规方法不能实现的优异精度来计算瞬态电感的时间历史。 解决方案:当AC信号发生器1向线圈3和电阻器4施加正弦波信号时,线圈3给出电感快速降低的触发。第一和第二电压e(t)和e 通过第一和第二电压控制BPF6,7的 R (t)从正弦波信号转换为脉波信号,第一和第二钳位电路8,9被输入到相位比较器10 ,并且相位比较器10输出两个电压之间的相位差ψ(t)的时间历程作为电压值的时间历史。 DSP11计算经过第一和第二电压控制BPF 6,7的第一和第二电压e(t)和e SB SB(t)的时间历程和电感的时间历程 根据来自相位比较器10的输出电压的时间历程,线圈3的L(t)。版权所有(C)2011,JPO&INPIT
    • 94. 发明专利
    • Current moment analysis device for vessel
    • 船舶流动分析装置
    • JP2011102096A
    • 2011-05-26
    • JP2009258037
    • 2009-11-11
    • Shimadzu CorpTechnical Research & Development Institute Ministry Of Defence株式会社島津製作所防衛省技術研究本部長
    • KUSADA KENTAROKIMURA TOSHIJINAKAMURA TAKASHIMISHINA NAOTO
    • B63B49/00G01R29/08
    • PROBLEM TO BE SOLVED: To provide a current moment analysis device capable of more accurately determining a current moment compared to conventional cases. SOLUTION: When a measured vessel 5 is made to pass through a neighborhood, a zero cross-point of an output waveform of a submerged electric field sensor 2 is detected. Based on positional information of the submerged electric field sensor 2 and positional information of the measured vessel 5 obtained during detection of the zero cross-point, an intermediate position of a current source of the measured vessel 5 is led out, and based on the intermediate position and the position of the current source (- side), a current source interval L of the measured vessel 5 is determined. A peak-to-peak value Va of the output waveform of the submerged electric field sensor 2 is stored. Next, as the same condition, the output waveform of the submerged electric field sensor 2 at a current value I [A] is led out by simulation, and a peak-to-peak value Vb at that time is determined. In the condition, a current value I=Va/Vb achieving the situation where the waveform is the peak-to-peak value Va is determined. Thus, by determining the current value I of the measured vessel 5, the current moment (L×I) of the vessel is determined. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种与常规情况相比能够更准确地确定当前时刻的电流力矩分析装置。 解决方案:当测量容器5通过邻域时,检测到潜入电场传感器2的输出波形的零交叉点。 基于浸没电场传感器2的位置信息和在零交叉点检测时获得的测量容器5的位置信息,导出测量容器5的电流源的中间位置,并且基于中间 位置和电流源( - 侧)的位置,确定测量容器5的电流源间隔L. 存储了潜水电场传感器2的输出波形的峰 - 峰值Va。 接下来,作为相同的条件,通过模拟引导电流值I [A]的潜水电场传感器2的输出波形,并且确定此时的峰 - 峰值Vb。 在该条件下,确定实现波形为峰 - 峰值Va的情况的电流值I = Va / Vb。 因此,通过确定测定容器5的电流值I,确定容器的当前力矩(L×I)。 版权所有(C)2011,JPO&INPIT
    • 95. 发明专利
    • Centrifugal casting method
    • 离心铸造方法
    • JP2011083804A
    • 2011-04-28
    • JP2009239156
    • 2009-10-16
    • Technical Research & Development Institute Ministry Of Defence防衛省技術研究本部長
    • ESAKA HISAOKATAOKA YOSHIMASA
    • B22D13/10
    • PROBLEM TO BE SOLVED: To provide a centrifugal casting method which radically reduces macrosegregation such as cat's paw segregation and lamination segregation in horizontal centrifugal casting. SOLUTION: During the rotation of a mold in horizontal centrifugal casting in which a rotary axis has an inclined angle of 0 to 45° to the horizontal, a molten metal is poured into the mold so as to occupy ≥90% of the internal volume of the mold, and is almost filled. Then, after the prescribed thickness of the molten metal is solidified in the mold, an un-solidified part remaining around the axis of the metal is exhausted from the inside of the mold. As a result, macrosegregation hardly occurs. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种离心铸造方法,其从根本上减少水平离心铸造中的猫爪偏析和层压偏析等宏观偏析。

      解决方案:在水平离心铸造中旋转轴线与水平面倾斜角度为0至45°的模具中旋转期间,将熔融金属倒入模具中,以占据 模具的内部容积,几乎被填充。 然后,在规定厚度的熔融金属在模具中固化之后,从模具内部排出残留在金属轴线上的未凝固部分。 结果,几乎不发生宏观偏析。 版权所有(C)2011,JPO&INPIT

    • 99. 发明专利
    • Method for estimating permanent magnetism of hull
    • 估计船体永久磁铁的方法
    • JP2011065612A
    • 2011-03-31
    • JP2009218212
    • 2009-09-19
    • Technical Research & Development Institute Ministry Of Defence防衛省技術研究本部長
    • NAKAMURA TAKASHIKIMURA TOSHIJIKUSADA KENTARO
    • G06F19/00B63G9/06G01R33/14
    • PROBLEM TO BE SOLVED: To provide a method for estimating permanent magnetism of a hull, which is capable of estimating permanent magnetism of the hull when a magnetic field is applied to the hull before degaussing is performed. SOLUTION: A specimen made of steel which is the same as the steel of the hull to be degaussed is created (ST1), and magnetization characteristics are measured by changing the magnetic field applied to the specimen (ST2). From the measured magnetization characteristics of a plurality of patterns, a Preisach's distribution chart for the steel is created (ST3). A hull numerical calculation model corresponding to a well-known numerical calculation method is created (ST4), and an applied magnetic field for each element is calculated (ST5). A Preisach's diagram corresponding to the applied magnetic field calculated is created for each element (ST6); permanent magnetism of each element is calculated based on the Preisach's distribution chart and the Preisach's diagram (ST7); permanent magnetism around the hull is estimated by the numerical calculation method based on the estimated value of permanent magnetism of each element (ST8); and an estimated value of permanent magnetism around the hull after magnetic processing is output (ST9). COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种用于估计船体永磁的方法,其能够在执行消磁之前将磁场施加到船体时估计船体的永磁。 (ST1),通过改变施加到试样的磁场(ST2)来测量磁化特性。 根据测量的多个图案的磁化特性,创建了钢的Preisach分布图(ST3)。 创建对应于众所周知的数值计算方法的船体数值计算模型(ST4),并计算每个元素的施加磁场(ST5)。 针对每个元素创建与所应用的磁场相对应的Preisach图(ST6); 根据Preisach的分布图和Preisach的图(ST7)计算每个元素的永磁性; 通过基于每个元素的永磁估计值的数值计算方法(ST8)估计船体周围的永久磁性; 输出磁性处理后的船体周围的永磁的估计值(ST9)。 版权所有(C)2011,JPO&INPIT
    • 100. 发明专利
    • Magnetic measuring system
    • 磁测量系统
    • JP2011047910A
    • 2011-03-10
    • JP2009199025
    • 2009-08-28
    • Shimadzu CorpTechnical Research & Development Institute Ministry Of Defence株式会社島津製作所防衛省技術研究本部長
    • KIMURA TOSHIJINAKAMURA TAKASHIAKAGI NAOFUMIMISHINA NAOTO
    • G01R33/02
    • PROBLEM TO BE SOLVED: To provide a magnetic measuring system capable of accurately measuring magnetic fields in a north-south direction, an east-west direction, and a vertical direction even under an oscillating environment. SOLUTION: In a magnetic measuring system comprising a triaxial magnetic sensor and an attitude sensor for measuring oscillations of the triaxial magnetic sensor and converts measurement data of a magnetic sensor into magnetic fields in a north-south direction, an east-west direction, and a vertical direction through a use of oscillation information acquired by an attitude sensor, an offset, orthogonality, and sensitivity of the triaxial magnetic sensor and displacements in axial parallelism between the attitude sensor and the triaxial magnetic sensor are corrected so as to minimize magnetic field variations in a north-south direction and variations in all magnetic forces. These correction values are used to alter measurement data of the triaxial magnetic sensor into magnetic fields in a north-south direction, an east-west direction, and a vertical direction. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种能够精确地测量在振荡环境下的南北方向,东西方向和垂直方向上的磁场的磁测量系统。 解决方案:在包括三轴磁传感器和姿态传感器的磁测量系统中,用于测量三轴磁传感器的振荡,并将磁传感器的测量数据转换成南北方向的磁场,东西方向 并且通过使用由姿态传感器获取的振荡信息,三轴磁传感器的偏移,正交性和灵敏度以及姿态传感器和三轴磁传感器之间的轴向平行度的位移的垂直方向被校正,以便最小化磁 南北方向的场变化和所有磁力的变化。 这些校正值用于将三轴磁传感器的测量数据改变成在南北方向,东西方向和垂直方向上的磁场。 版权所有(C)2011,JPO&INPIT