公开(公告)号：US20220067224A1

公开(公告)日：2022-03-03

申请号：US17412915

申请日：2021-08-26

申请人： Tomotaka Sugai ,  Kohei Shintani ,  Ivo Couckuyt ,  Nicolas Knudde ,  Jixiang Qing ,  Tom Dhaene

发明人： Tomotaka Sugai ,  Kohei Shintani ,  Ivo Couckuyt ,  Nicolas Knudde ,  Jixiang Qing ,  Tom Dhaene

IPC分类号： G06F30/10 ,  G06F30/20 ,  G06N7/00

摘要： A parallel processing designing device includes: an observation point computing section that, in a case in which an order of plural design variables exceeds a predetermined order, eliminates a design variable that has a low contribution to designing, and for each of plural design variables that are less than or equal to the predetermined order, computes plural observation points for searching for a region in which a performance relating to the design variable is executable, by using an acquisition function and a penalty function; a probability distribution computing section that, for each of the plural performances, computes a probability distribution of the performance being executable at the computed plural observation points; and a multiple performance executable region outputting section that outputs, as a multiple performance executable region, an infinite product of the probability distributions that are respectively computed for the plural performances.

公开(公告)号：US08078446B2

公开(公告)日：2011-12-13

申请号：US12047943

申请日：2008-03-13

申请人： Nobby Stevens ,  Tom Dhaene

发明人： Nobby Stevens ,  Tom Dhaene

IPC分类号： G06F17/50

CPC分类号： G06F17/5036

摘要： A linear time-invariant system modeling apparatus comprises a processing resource arranged to receive, when in use, model data constituting to a model of a linear time-invariant system. The model data includes residual value data and scattering data. The processing resource is arranged to perform, when in use, a single value decomposition in respect of the scattering data; the scattering data corresponds, when expressed in matrix form, to a scattering matrix in a state-space representation of the model. The processing resource is also arranged to use, when in use, a result of the single value decomposition in order to generate residual value modification data. The residual value modification data is applied to the residual value data, the residual value data corresponding, when expressed in the matrix form, to a residual value matrix in the state-space representation of the model.

摘要翻译： 线性时不变系统建模装置包括处理资源，其被配置为在使用时接收构成线性时不变系统的模型的模型数据。 模型数据包括残差值数据和散射数据。 处理资源被设置为在使用时执行关于散射数据的单值分解; 当以矩阵形式表示时，散射数据对应于模型的状态空间表示中的散射矩阵。 处理资源还被布置为在使用时使用单值分解的结果，以便生成残余值修改数据。 剩余值修改数据被应用于残差值数据，当以矩阵形式表达时，剩余值数据对应于模型的状态空间表示中的残差值矩阵。

公开(公告)号：US20070250559A1

公开(公告)日：2007-10-25

申请号：US11409300

申请日：2006-04-21

申请人： Tom Dhaene ,  Dirk Deschrijver ,  Bart Haegeman

发明人： Tom Dhaene ,  Dirk Deschrijver ,  Bart Haegeman

IPC分类号： G06F7/38

CPC分类号： G06F17/5036 ,  Y02T10/82

摘要： In order to generate a broadband transfer function of complex characteristics of a linear time-invariant (LTI) system, data characterising properties of the system are acquired. A set of poles in the complex plane are defined to characterise the system, and then an iterative process is performed to: define a set of orthonormal rational basis functions incorporating the defined poles, use the orthonormal rational basis functions to estimate transfer function coefficients, and derive revised values for the complex poles, until a desired level of accuracy of the transfer function coefficients is attained. The revised complex poles are used to determine parameters of the broadband transfer function.

摘要翻译： 为了生成线性时不变（LTI）系统的复杂特征的宽带传递函数，获取了系统的数据表征特性。 定义复平面中的一组极点来表征系统，然后执行迭代过程：定义一组包含定义极点的正交有理基函数，使用正交有理基函数来估计传递函数系数，以及 导出复极点的修正值，直到达到传递函数系数的期望精度水平。 修正后的复极点用于确定宽带传输函数的参数。

公开(公告)号：US06295635B1

公开(公告)日：2001-09-25

申请号：US09193296

申请日：1998-11-17

申请人： Tom Dhaene ,  Jan De Geest

发明人： Tom Dhaene ,  Jan De Geest

IPC分类号： G06F1750

CPC分类号： G06F17/5036

摘要： A method for modeling a general passive interconnection structure for use in a circuit simulator. The model is based on full-wave EM simulations and has a predefined accuracy when compared to the full-wave EM simulator. The interconnection structure is described by parameters that depend on geometric parameters determined by a vector x and the frequency of the signal passing through the interconnect circuit. In a CAD system according to the present invention, information representing a plurality of coefficients, Cm(f) is stored in the CAD system for m=0 to M. The CAD system also stores information specifying the values of a plurality of multinomial functions, Pm(x) for m=0 to M, wherein M>1. When the CAD system needs the value of one of the parameters that describes the interconnect circuit, the CAD system computes an approximation, M(f,x), to that parameter according to the relationship: M ⁡ ( f , x ) = ∑ m = 0 M ⁢ C m ⁡ ( f ) ⁢ P m ⁡ ( x ) . wherein each Pm(x) is a multinomial for m>0. The algorithm combines three adaptive loops. The first adaptive loop selects the required data points by evaluating a number of selection criteria. The number of data points needed to achieve the desired accuracy for the model is minimized. The selected scattering parameters at the data points are calculated using, the full-wave EM simulator. The second adaptive loop selects the frequency points needed by the simulator to accurately model the behavior of the scattering parameters over the whole frequency range. The third adaptive loop selects the number of polynomials needed to accurately model the data points. The resulting model has a predefined accuracy when compared to full-wave EM simulations.

摘要翻译： 一种用于在电路仿真器中使用的通用无源互连结构建模的方法。 该模型基于全波EM模拟，与全波EM模拟器相比具有预定义的精度。 互连结构由取决于由矢量x确定的几何参数和通过互连电路的信号的频率的参数描述。 在根据本发明的CAD系统中，表示多个系数Cm（f）的信息被存储在用于m = 0到M的CAD系统中.CAD系统还存储指定多个多项函数的值的信息， P m（x）对于m = 0至M，其中M> 1。 当CAD系统需要描述互连电路的一个参数的值时，CAD系统根据以下关系计算该参数的近似值M（f，x）：其中每个Pm（x）是多项式， m> 0。 该算法组合了三个自适应循环。 第一个自适应循环通过评估多个选择标准来选择所需的数据点。 实现模型所需精度所需的数据点数量被最小化。 使用全波EM模拟器计算数据点处的选定散射参数。 第二个自适应环路选择模拟器所需的频率点，以便在整个频率范围内精确地建模散射参数的行为。 第三个自适应循环选择准确建模数据点所需的多项式数。 与全波EM模拟相比，得到的模型具有预定义的准确度。

公开(公告)号：US08145453B2

公开(公告)日：2012-03-27

申请号：US11409300

申请日：2006-04-21

申请人： Tom Dhaene ,  Dirk Deschrijver ,  Bart Haegeman

发明人： Tom Dhaene ,  Dirk Deschrijver ,  Bart Haegeman

IPC分类号： G06F17/10

CPC分类号： G06F17/5036 ,  Y02T10/82

摘要： In order to generate a broadband transfer function of complex characteristics of a linear time-invariant (LTI) system, data characterising properties of the system are acquired. A set of poles in the complex plane are defined to characterize the system, and then an iterative process is performed to: define a set of orthonormal rational basis functions incorporating the defined poles, use the orthonormal rational basis functions to estimate transfer function coefficients, and derive revised values for the complex poles, until a desired level of accuracy of the transfer function coefficients is attained. The revised complex poles are used to determine parameters of the broadband transfer function.

摘要翻译： 为了生成线性时不变（LTI）系统的复杂特征的宽带传递函数，获取了系统的数据表征特性。 定义复平面中的一组极点来表征系统，然后执行迭代过程：定义一组包含定义极点的正交有理基函数，使用正交有理基函数来估计传递函数系数，以及 导出复极点的修正值，直到达到传递函数系数的期望精度水平。 修正后的复极点用于确定宽带传输函数的参数。

公开(公告)号：US20100280801A1

公开(公告)日：2010-11-04

申请号：US12738226

申请日：2008-08-11

申请人： Dirk Deschrijver ,  Tom Dhaene ,  Daniël De Zutter

发明人： Dirk Deschrijver ,  Tom Dhaene ,  Daniël De Zutter

IPC分类号： G06F17/50

CPC分类号： G06F17/5036

摘要： The present invention relates to a method (200) for generating a multivariate system model of a multivariate system which has a plurality of parameters and the multivariate system model is representative for the system response to changes in the parameters. The method (200) involves performing a plurality of measurements and/or simulations on the multivariate system to obtain reference data (201). The method further involves the selection of rational base functions (202) and combining these base functions (203) into a model of the multivariate system. The multivariate system model is obtained (208) by minimizing a cost function (205) between the model and the reference data. Explicit weight factors which are related to the reference data are used. The respective values for the explicit weight factors in the cost function are iteratively determined (205) in order to approximate the reference data with the model and the cost function is updated accordingly in each iteration.

摘要翻译： 本发明涉及一种用于生成具有多个参数的多变量系统的多变量系统模型的方法（200），并且多变量系统模型代表系统对参数变化的响应。 方法（200）涉及在多变量系统上执行多个测量和/或模拟以获得参考数据（201）。 该方法还包括选择合理的基本函数（202）并将这些基本函数（203）组合成多变量系统的模型。 通过最小化模型和参考数据之间的成本函数（205）来获得多变量系统模型（208）。 使用与参考数据相关的显式权重因子。 迭代确定成本函数中显式加权因子的相应值（205），以便利用模型近似参考数据，并在每次迭代中相应更新成本函数。

公开(公告)号：US20090234631A1

公开(公告)日：2009-09-17

申请号：US12047943

申请日：2008-03-13

申请人： Nobby Stevens ,  Tom Dhaene

发明人： Nobby Stevens ,  Tom Dhaene

IPC分类号： G06F17/50

CPC分类号： G06F17/5036

摘要： A linear time-invariant system modeling apparatus comprises a processing resource arranged to receive, when in use, model data constituting to a model of a linear time-invariant system. The model data includes residual value data and scattering data. The processing resource is arranged to perform, when in use, a single value decomposition in respect of the scattering data; the scattering data corresponds, when expressed in matrix form, to a scattering matrix in a state-space representation of the model. The processing resource is also arranged to use, when in use, a result of the single value decomposition in order to generate residual value modification data. The residual value modification data is applied to the residual value data, the residual value data corresponding, when expressed in the matrix form, to a residual value matrix in the state-space representation of the model.

摘要翻译： 线性时不变系统建模装置包括处理资源，其被配置为在使用时接收构成线性时不变系统的模型的模型数据。 模型数据包括残差值数据和散射数据。 处理资源被设置为在使用时执行关于散射数据的单值分解; 当以矩阵形式表示时，散射数据对应于模型的状态空间表示中的散射矩阵。 处理资源还被布置为在使用时使用单值分解的结果，以便生成残余值修改数据。 剩余值修改数据被应用于残差值数据，当以矩阵形式表达时，剩余值数据对应于模型的状态空间表示中的残差值矩阵。

公开(公告)号：US20050175111A1

公开(公告)日：2005-08-11

申请号：US11042790

申请日：2005-01-24

申请人： Tom Dhaene ,  Luc Knockaert

发明人： Tom Dhaene ,  Luc Knockaert

IPC分类号： G06F17/50 ,  H04B1/18

CPC分类号： G06F17/5036

摘要： A method of concatenating a plurality of narrowband frequency-domain models of a linear time-invariant (LTI) system, each model being descriptive of the system's operational characteristics over a different respective frequency range, to derive a single broadband model that describes the system's operational characteristics over the total frequency range encompassed by the narrowband models, includes assembling stable poles of matrix representations of the narrowband frequency-domain models together with additional poles satisfying a predetermined criterion, based on band-limited truncated Complete Orthonormal Kautz Bases (COKB) requirements, to derive a canonical modal system matrix, deriving a band-limited controllability Grammian as a function of the canonical modal system matrix. deriving a broadband observability vector as a function of the band-limited controllability Grammian and the canonical modal system matrix, and deriving the single broadband model as a function of the broadband observability vector.

摘要翻译： 一种连接线性时不变（LTI）系统的多个窄带频域模型的方法，每个模型描述在不同的相应频率范围内的系统的操作特性，以得出描述系统的操作的单个宽带模型 由窄带模型所包含的总频率范围内的特征包括：基于频带限制截尾的完整正交考茨基（COBB）要求，组合窄带频域模型的矩阵表示的稳定极点以及满足预定标准的附加极点， 导出规范的模态系统矩阵，导出带限制可控性格拉米尼作为规范模态系统矩阵的函数。 导出宽带可观测向量作为带限可控性格拉姆曼和规范模态系统矩阵的函数，并将单一宽带模型作为宽带可观测向量的函数导出。