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1. 发明授权

US08645883B2 Integrated circuit simulation using fundamental and derivative circuit runs 有权
标题翻译：使用基波和微分电路运行的集成电路仿真
公开(公告)号：US08645883B2
公开(公告)日：2014-02-04
申请号：US13466295
申请日：2012-05-08
申请人： Alexander Korobkov , Wai Chung William Au , Subramanian Venkateswaran
发明人： Alexander Korobkov , Wai Chung William Au , Subramanian Venkateswaran
IPC分类号： G06F17/50 , G06F17/10
CPC分类号： G06F17/5036
摘要： A system that simulates an integrated circuit is formed of a plurality of devices. The system initially performs a fundamental circuit simulation run using original parameters for the plurality of devices and an initial time step. The system generates one or more fundamental time steps from the fundamental circuit simulation run. The fundamental time steps are generated when changes that indicate state time derivatives during two or more successive integration steps are within a predetermined range. The system stores the one or more fundamental time steps as fundamental circuit events in an events queue, and updates the parameters for the plurality of devices based on the fundamental circuit events to generate one or more derivative circuits. The system then performs one or more derivative circuit simulation runs using the derivative circuits.
摘要翻译：模拟集成电路的系统由多个装置构成。该系统最初使用多个装置的原始参数和初始时间步骤进行基本电路模拟运行。该系统从基本电路仿真运行产生一个或多个基本时间步骤。当在两个或多个连续积分步骤期间指示状态时间导数的变化在预定范围内时，生成基本时间步长。该系统将一个或多个基本时间步骤作为基本电路事件存储在事件队列中，并且基于基本电路事件更新多个设备的参数以生成一个或多个导数电路。然后，系统使用导数电路执行一个或多个导数电路仿真运行。

2. 发明授权

US08024051B2 Parallel power grid analysis 有权
标题翻译：并行电网分析
公开(公告)号：US08024051B2
公开(公告)日：2011-09-20
申请号：US12391945
申请日：2009-02-24
申请人： Alexander Korobkov , Wai Chung William Au
发明人： Alexander Korobkov , Wai Chung William Au
IPC分类号： G05B11/01 , G06G7/54
CPC分类号： G06F17/5036 , G06F17/509 , G06F2217/78 , Y02E60/76 , Y04S40/22
摘要： A method for a power grid configured to supply current to a plurality of elements of a circuit. The method includes representing the power grid as a graph including a plurality of nodes and a plurality of edges, wherein each node of a portion of the plurality of nodes corresponds to an element of the plurality of elements each modeled as a current source, determining a characteristic matrix A of the power grid, wherein transient behavior of the power grid is represented by a set of linear equations of A*v=i, wherein v is a nodal voltage vector representing nodal voltages of at least a portion of the plurality of nodes and i is a current source vector representing currents supplied to at least a portion of the plurality of elements, identifying first and second partitions of the power grid based on a predetermined criterion, identifying first and second current source subvectors of the current source vector according to the first and second partitions of the power grid, identifying a first shell of the first partition based on worst case nodal voltage sensitivity analysis with respect to the first current source subvector, identifying a second shell of the second partition based on worst case nodal voltage sensitivity analysis with respect to the second current source subvector, and generating an analysis result of transient behavior of the power grid by analyzing, concurrently and independently, the first and second shells of the first and second partitions of the power grid, respectively.
摘要翻译：一种用于电网的方法，被配置为向电路的多个元件提供电流。该方法包括将电力网格表示为包括多个节点和多个边缘的图形，其中多个节点的一部分中的每个节点对应于多个元素的元素，每个元素被建模为当前源，确定一个电网的特征矩阵A，其中电网的瞬态行为由A * v = i的一组线性方程表示，其中v是表示多个节点的至少一部分的节点电压的节点电压矢量并且i是表示提供给所述多个元件的至少一部分的电流的电流源矢量，基于预定标准识别所述电网的第一和第二分区，根据所述标准识别当前源矢量的第一和第二电流源子矢量电网的第一和第二分区，基于最坏情况的节点电压敏感性分析识别第一分区的第一壳根据对第二电流源子矢量的最差情况节点电压敏感性分析，识别第二分区的第二壳，并通过分析，同时和分别是电网的第一和第二分区的第一和第二壳。

3. 发明申请

US20100217577A1 PARALLEL POWER GRID ANALYSIS 有权
标题翻译：并行电力分析
公开(公告)号：US20100217577A1
公开(公告)日：2010-08-26
申请号：US12391945
申请日：2009-02-24
申请人： Alexander Korobkov , Wai Chung William Au
发明人： Alexander Korobkov , Wai Chung William Au
IPC分类号： G06F17/50
CPC分类号： G06F17/5036 , G06F17/509 , G06F2217/78 , Y02E60/76 , Y04S40/22
摘要： A method for a power grid configured to supply current to a plurality of elements of a circuit. The method includes representing the power grid as a graph including a plurality of nodes and a plurality of edges, wherein each node of a portion of the plurality of nodes corresponds to an element of the plurality of elements each modeled as a current source, determining a characteristic matrix A of the power grid, wherein transient behavior of the power grid is represented by a set of linear equations of A*v=i, wherein v is a nodal voltage vector representing nodal voltages of at least a portion of the plurality of nodes and i is a current source vector representing currents supplied to at least a portion of the plurality of elements, identifying first and second partitions of the power grid based on a predetermined criterion, identifying first and second current source subvectors of the current source vector according to the first and second partitions of the power grid, identifying a first shell of the first partition based on worst case nodal voltage sensitivity analysis with respect to the first current source subvector, identifying a second shell of the second partition based on worst case nodal voltage sensitivity analysis with respect to the second current source subvector, and generating an analysis result of transient behavior of the power grid by analyzing, concurrently and independently, the first and second shells of the first and second partitions of the power grid, respectively.
摘要翻译：一种用于电网的方法，被配置为向电路的多个元件提供电流。该方法包括将电力网格表示为包括多个节点和多个边缘的图形，其中多个节点的一部分中的每个节点对应于多个元素的元素，每个元素被建模为当前源，确定一个电网的特征矩阵A，其中电网的瞬态行为由A * v = i的一组线性方程表示，其中v是表示多个节点的至少一部分的节点电压的节点电压矢量并且i是表示提供给所述多个元件的至少一部分的电流的电流源矢量，基于预定标准识别所述电网的第一和第二分区，根据所述标准识别当前源矢量的第一和第二电流源子矢量电网的第一和第二分区，基于最坏情况的节点电压敏感性分析识别第一分区的第一壳根据对第二电流源子矢量的最差情况节点电压敏感性分析，识别第二分区的第二壳，并通过分析，同时和分别是电网的第一和第二分区的第一和第二壳。

4. 发明授权

US07373289B2 Electrical isomorphism 有权
标题翻译：电同构
公开(公告)号：US07373289B2
公开(公告)日：2008-05-13
申请号：US10993687
申请日：2004-11-19
申请人： Bruce W. McGaughy , Wai Chung William Au , Baolin Yang
发明人： Bruce W. McGaughy , Wai Chung William Au , Baolin Yang
IPC分类号： G06F17/50
CPC分类号： G06F17/5036
摘要： Method and system for determining electrical isomorphism between two electrical networks are disclosed. In one embodiment, the method includes representing the circuit as a hierarchically-arranged set of branches. The hierarchically-arranged set of branches including a first branch that includes a first electrical network and a second branch that includes a second electrical network, where the first and second branches are interconnected in the graph through a third branch at a higher hierarchical level in the graph than the first and second branches. Next, the method determines whether the first and second electrical networks are electrically isomorphic networks. If the first and second electrical networks are determined to be electrically isomorphic networks, the first and second electrical networks are represented with a single electrically isomorphic network. The method further includes simulating the first and second electrical networks using the single electrically isomorphic network.
摘要翻译：公开了用于确定两个电网之间的电同构的方法和系统。在一个实施例中，该方法包括将电路表示为分层布置的分支集合。分层布置的分支集合包括包括第一电网的第一分支和包括第二电网的第二分支，其中第一和第二分支在图中通过第三分支以更高层次级互连图比第一和第二分支。接下来，该方法确定第一和第二电网络是否是电同构网络。如果第一和第二电网被确定为电同构网络，则第一和第二电网由单个电同构网络表示。该方法还包括使用单个电同构网络来模拟第一和第二电网络。

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