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    • 3. 发明授权
    • Device, method and storage medium for calculating electromagnetic field
strength
    • 用于计算电磁场强度的装置,方法和存储介质
    • US5940310A
    • 1999-08-17
    • US969659
    • 1997-11-13
    • Shinya YamaguchiTomoyuki NakaoShinichi OhtsuMakoto Mukai
    • Shinya YamaguchiTomoyuki NakaoShinichi OhtsuMakoto Mukai
    • G01R29/08G01R31/00G06F17/50G06F9/455
    • G06F17/5036G06F17/5018G01R31/001G06F2217/78
    • A device accurately calculates the strength of an electromagnetic field radiated from an electric circuit apparatus having a data receiving unit, and extractor, a model generator, and a calculator. The data receiving unit receives structural data related to the electric circuit apparatus. The extractor exacts, from the received data, structural data related to a dielectric between a power source layer and a ground layer of a multilayer printed board. The generator refers to the structural data on the multilayer printed board, divides the power source layer and the ground layer into corresponding meshes of metal patches, vertically extends first and second conductive patches from the sides of the metal patches so that the conductive patches are not in contact with one another, arranges a capacitor between each pair of the first and second conductive patches, divides selected metal patches of the power source and ground layers to form two triangle patches, and arranges a noise source between the apexes of the triangle patches, thereby producing a model of the multilayer printed board. The calculator calculates the strength of an electromagnetic field radiated from the electric circuit apparatus according to the model of the multilayer printed board.
    • 一种装置精确地计算从具有数据接收单元的电路装置和提取器,模型发生器和计算器辐射的电磁场的强度。 数据接收单元接收与电路装置相关的结构数据。 提取器根据接收到的数据确定与多层印刷电路板的电源层和接地层之间的电介质相关的结构数据。 发电机是指多层印刷电路板上的结构数据,将电源层和接地层分成金属片的相应网格,从金属贴片的侧面垂直延伸第一和第二导电贴片,导电贴片不会 彼此接触,在每对第一和第二导电贴片之间布置电容器,分割电源和接地层的所选金属贴片以形成两个三角形贴片,并且在三角形贴片的顶点之间布置噪声源, 从而制造多层印刷电路板的模型。 计算机根据多层印刷电路板的型号计算从电路装置辐射的电磁场的强度。
    • 5. 发明授权
    • Simulation apparatus and simulation method using moment method
    • 仿真设备和使用力矩法的仿真方法
    • US6083266A
    • 2000-07-04
    • US13071
    • 1998-01-26
    • Shinichi OhtsuMakoto Mukai
    • Shinichi OhtsuMakoto Mukai
    • G01R29/08G01R31/00G06F17/11G06F17/50G06F19/00G06Q50/00G06Q50/04G06F17/10
    • G01R31/001G06F17/5018
    • A simulation apparatus for simulating the current flowing through elements of an electronic apparatus using the moment method based on reaction matching and able to achieve high speed simulation processing, comprising a segmenting means for segmenting the electronic apparatus to be analyzed into elements, a calculating means for calculating a mutual impedance between segmented elements of the electronic apparatus, assuming that a triangle function current flows through the monopoles, by using an approximation equation of the mutual impedance between monopoles, expressed by a polynomial of the power of k, derived by exp(-jkr) which is approximated by multiplication of exp(-jkr.sub.0) and a Taylor expansion of exp[-jk(r-r.sub.0)] (where j is an imaginary number, k is a wave number, r is the distance between monopoles, and r.sub.0 is a representative distance between monopoles), and a simulating means, by using the calculated mutual impedances between elements, for finding the current flowing through the elements of the electronic apparatus in accordance with the moment method.
    • 一种仿真装置,用于使用基于反应匹配的力矩法来模拟电子装置的电流流动,并且能够实现高速模拟处理,包括用于将待分析的电子装置分割成元件的分割装置,用于 计算电子设备的分段元件之间的互阻抗,假设三角函数电流流过单极子,通过使用通过由exp( - )导出的k的幂的多项式表示的单极子之间的互阻抗的近似方程, jkr),其通过exp(-jkr0)的乘法和exp [-jk(r-r0)]的泰勒展开近似(其中j是虚数,k是波数,r是单极子之间的距离,和 r0是单极子之间的代表性距离)和模拟装置,通过使用所计算的元件之间的互阻,来找到流过th的电流 电子装置的e元件按照时刻法。
    • 6. 发明授权
    • Simulation method and apparatus using a Fourier transform
    • 使用傅立叶变换的仿真方法和装置
    • US06499004B1
    • 2002-12-24
    • US09216982
    • 1998-12-21
    • Shinichi OhtsuMakoto Mukai
    • Shinichi OhtsuMakoto Mukai
    • G06F760
    • G05B17/02G06F17/5036
    • Solving simultaneous equations of the moment method defining relationships between a mutual impedence between elements of an electronic apparatus, a wave source, and an electric current flowing in each element so as to simulate an electric current, provided with a unit for calculating the mutual impedance at a sampling frequency and calculating approximation coefficients, when expressing the mutual impedance by approximation expressions in terms of exponents and exponent powers, from the calculated values and sampling frequency; a unit for forming the simultaneous differential equations by setting the approximation coefficients and initial value with respect to the simultaneous differential equations derived by performing a Fourier transform on the simultaneous equations of the moment method in which the approximation expressions are substituted; and a unit for calculating the electric current in the time domain flowing through the specified element by solving the simultaneous differential equations formed.
    • 求解定义电子装置的元件间的相互阻抗,波源和流过每个元件的电流之间的关系的时刻方法,以便模拟电流,该方法设置有用于计算互阻抗的单位 当从计算值和采样频率表示通过指数和指数幂的近似表达式的互阻抗时,采样频率和计算近似系数; 用于通过对近似表达式被替代的力矩方法的联立方程进行傅里叶变换得到的同步微分方程式来设定近似系数和初始值来形成同步微分方程的单元; 以及通过求解形成的同步微分方程来计算流过指定元件的时域中的电流的单元。
    • 8. 发明授权
    • Electromagnetic field intensity computing device
    • 电磁场强度计算装置
    • US06185517B2
    • 2001-02-06
    • US09017927
    • 1998-02-03
    • Shinichi OhtsuMakoto Mukai
    • Shinichi OhtsuMakoto Mukai
    • G06G748
    • G01R29/08G06F17/5018G06F17/5036G06F2217/16
    • An electromagnetic field intensity computing apparatus for computing electromagnetic field intensity of an electric circuit device in a moment method obtains according to the electric current distribution an electric current of a ground layer and models a transmission line, ground layer, dielectric portion, etc. to be analyzed. When a plate to be analyzed is divided into a plurality of patches, the regularity in given structure data is automatically extracted to compute the mutual impedance among a portion of patches and apply the computation result to other portions. When elements to be analyzed meet the conditions that the electric length of the elements is short and the elements are distant from each other, the mutual impedance can be computed in an approximation obtained under various conditions. Furthermore, approximating a portion near a pigtail portion of a coaxial cable using a polygon allows a vertical electric current to be properly connected to each unit.
    • 用于以瞬时法计算电路装置的电磁场强度的电磁场强度计算装置根据电流分布获得接地层的电流,并对传输线,接地层,电介质部分等进行建模 分析 当要分析的板被分成多个块时,自动提取给定结构数据的规则性,以计算一部分补丁之间的互阻抗,并将计算结果应用于其他部分。 当要分析的元件满足元件的电长度短并且元件彼此远离的条件时,可以在各种条件下获得的近似计算互阻抗。 此外,使用多边形近似同轴电缆的尾纤部分附近的部分允许垂直电流适当地连接到每个单元。
    • 9. 发明授权
    • Apparatus and method for calculating the strength of an electromagnetic field radiated from an electric device
    • 用于计算从电气设备辐射的电磁场的强度的装置和方法
    • US06285957B1
    • 2001-09-04
    • US09045125
    • 1998-03-20
    • Yoshirou TanakaShinichi OhtsuMakoto Mukai
    • Yoshirou TanakaShinichi OhtsuMakoto Mukai
    • G06F9455
    • G06F17/5036G01R31/002G06F2217/36
    • An apparatus and method are provided to calculate the strength of an electromagnetic field radiated from an electric device according to a moment method, wherein the moment method is based on integral equations derived from electromagnetic equations. The apparatus and method include a setting unit to interactively set a name of a two-wire cable arranged in the electric device and coordinates of the two-wire cable at a cable inlet, a cable outlet, and way points in the electric device, the way points being prepared as and when required to bend the two-wire cable between the cable inlet and the cable outlet. Further, the apparatus and method include library unit corresponding to cable names, respectively, and storing attributes of a corresponding cable comprising of the name, type, characteristic impedance, and structural data of the two-wire cable. A generation unit is provided to generate a moment-method model of the two-wire cable according to the attributes of the two-wire cable read out of the at least one library unit specified by the name of the two-wire cable set by the setting unit and the coordinates of the two-wire cable at the cable inlet, cable outlet, and way points set by the setting unit. A calculation unit calculates the strength of the electromagnetic field radiated from the electric device according to the moment-method model of the two-wire cable and the moment method.
    • 提供一种装置和方法,用于根据力矩方法计算从电气装置辐射的电磁场的强度,其中力矩方法基于从电磁方程导出的积分方程。 该装置和方法包括:设置单元,用于交互地设置布置在电气设备中的双线电缆的名称,并且电线设备中的电缆入口,电缆出口和通路点处的双线电缆的坐标, 当需要时,双线电缆在电缆入口和电缆出口之间弯曲而准备好。 此外,该装置和方法分别包括对应于电缆名称的库单元,并且存储由双线电缆的名称,类型,特性阻抗和结构数据组成的对应电缆的属性。 提供生成单元,以根据从由至少一个库单元读出的两线电缆的属性生成双线电缆的力矩模型,该单元由由两线电缆组的名称指定 设定单位和两线电缆在电缆入口,电缆出口和设定单位设定的路点的坐标。 计算单元根据双线电缆的力矩模型和力矩法计算从电气设备辐射的电磁场的强度。