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11. 发明授权

US07974820B1 System and method for synchronizing and using a three dimensional view with a block diagram model 有权
标题翻译：用于使用框图模型同步和使用三维视图的系统和方法
公开(公告)号：US07974820B1
公开(公告)日：2011-07-05
申请号：US12704309
申请日：2010-02-11
申请人： Jeff Wendlandt , Arnav Mukherjee
发明人： Jeff Wendlandt , Arnav Mukherjee
IPC分类号： G06F7/60 , G06F17/50
CPC分类号： G06F17/50 , G06F2217/74
摘要： A method of synchronizing a block diagram view of a system being modeled with a three-dimensional view of the system being modeled and with the underlying block diagram model data is disclosed. Changes in the block diagram model data are reflected in both views to the degree that the views contain a point of correspondence. User selected changes to the block diagram view of the system being modeled cause changes in the underlying model data. A view generator examines the model data to determine if a point of correspondence equivalent to the changed portion of the block diagram view exists in the three dimensional view. If a point of correspondence exists in the three-dimensional view the view is updated to reflect the changes in the block diagram view. Similarly, user selected changes in the three-dimensional view cause changes in the underlying block diagram model data. The view generator examines the model data to determine if a point of correspondence equivalent to the changed portion of the three dimensional view exists in the block diagram view. In the event that a point of correspondence is found, the block diagram view is updated.
摘要翻译：公开了一种使正被建模的系统的三维视图与底层框图模型数据被建模的系统的框图视图同步的方法。框图模型数据中的更改反映在两个视图中，视图包含一个对应点的程度。用户选择对被建模系统的框图视图的更改会导致底层模型数据的更改。视图生成器检查模型数据以确定在三维视图中是否存在与框图视图的改变部分相当的对应点。如果在三维视图中存在一个对应点，则视图被更新以反映框图视图中的变化。类似地，用户选择的三维视图中的更改会导致底层框图模型数据的变化。视图生成器检查模型数据，以确定在框图视图中是否存在与三维视图的改变部分相当的对应点。在找到一个对应点的情况下，框图视图被更新。

12. 发明授权

US08019575B1 State projection via minimization of error energy 有权
标题翻译：通过最小化误差能量进行状态投影
公开(公告)号：US08019575B1
公开(公告)日：2011-09-13
申请号：US11479003
申请日：2006-06-30
申请人： Victor Chudnovsky , Jeff Wendlandt
发明人： Victor Chudnovsky , Jeff Wendlandt
IPC分类号： G06F7/60 , G06G7/48
CPC分类号： G06F17/5009 , G06F2217/16
摘要： The present invention improves in one aspect the accuracy, efficiency, and robustness of fixed-step solvers when simulating a physical system that does not change in energy at the critical event. The present invention uses the energy of the error as the figure of merit in finding the first state of the system under the new constraints. The present invention enables a fixed-step solver to be more robust even when the critical event falls between two time samples. The present invention may also be applied to variable-step solvers. Moreover, the present invention may also be used to simulate a physical system when the energy changes at the critical event in the physical system.
摘要翻译：本发明在模拟在关键事件的能量不变的物理系统时，在一个方面改进了固定步骤求解器的精度，效率和鲁棒性。本发明使用误差的能量作为品质因素，在新约束下找到系统的第一状态。本发明使得即使当关键事件落在两个时间样本之间时，固定步长求解器也更加鲁棒。本发明也可以应用于可变步长解算器。此外，当物理系统中的关键事件的能量变化时，本发明还可以用于模拟物理系统。

13. 发明授权

US08380467B1 Representing geometry of a system in a modeling environment 有权
标题翻译：在建模环境中表示系统的几何
公开(公告)号：US08380467B1
公开(公告)日：2013-02-19
申请号：US12837638
申请日：2010-07-16
申请人： Brian Mirtich , Jeff Wendlandt
发明人： Brian Mirtich , Jeff Wendlandt
IPC分类号： G06F17/50
CPC分类号： G06F17/50 , G06F17/5086
摘要： In an embodiment, an element, that represents an entity in a system, is generated. The generated element may be incorporated in a network that represents the system. The generated element may include geometry information about a geometry of the entity. The geometry information may be used in one or more computations associated with a simulation or an analysis of the system. The element may have a frame port that exposes a frame. The frame may represent at least a position and an orientation in a two dimensional or three dimensional space with respect to another frame in the network. The other frame in the network may be a reference frame that may be defined by a “world” that the system resides in. The generated element may be incorporated into the network by connecting the frame port to the network.
摘要翻译：在一个实施例中，生成表示系统中的实体的元素。生成的元素可以并入表示系统的网络中。生成的元素可以包括关于实体的几何的几何信息。几何信息可以用于与系统的仿真或分析相关联的一个或多个计算中。该元素可以具有公开帧的帧端口。该帧可以相对于网络中的另一帧表示二维或三维空间中的至少一个位置和取向。网络中的另一帧可以是可以由系统驻留的世界定义的参考帧。所生成的元素可以通过将帧端口连接到网络而并入到网络中。

14. 发明授权

US07739081B1 Modeling linearly-implicit systems in block diagram modeling environments 有权
标题翻译：在框图建模环境中建模线性隐式系统
公开(公告)号：US07739081B1
公开(公告)日：2010-06-15
申请号：US10903168
申请日：2004-07-30
申请人： Jacek Kierzenka , Jeff Wendlandt
发明人： Jacek Kierzenka , Jeff Wendlandt
IPC分类号： G06F7/60 , G06G7/48
CPC分类号： G06F17/5009 , G06F17/13 , G06F2217/74
摘要： Methods for modeling and executing systems in a linearly-implicit formulation of ordinary differential equations (ODEs) or differential algebraic equations (DAEs) are provided in modeling environments. The modeling environments may include block diagram modeling environments, such as time-based block diagram modeling environments. The block diagram modeling environments may include or be coupled to other modeling environments, such as physical modeling environments, so that models created in other modeling environments may also be introduced and solved in the linearly-implicit formulation of ODEs or DAEs in the block diagram modeling environments. Models describing the systems in the linearly-implicit formulation of ODEs or DAEs may also be created directly by users using user-defined blocks in the block diagram modeling environments. The present invention provides solvers for solving the system described in the linearly-implicit formulation of DAEs as well as ODEs in the block diagram modeling environment.
摘要翻译：在建模环境中提供了在普通微分方程（ODEs）或微分代数方程（DAE）的线性隐式公式中建模和执行系统的方法。建模环境可以包括框图建模环境，例如基于时间的框图建模环境。框图建模环境可以包括或耦合到其他建模环境，例如物理建模环境，使得在其他建模环境中创建的模型也可以在框图建模中的ODE或DAE的线性隐式公式中引入和解决环境。描述ODE或DAE的线性隐式公式中的系统的模型也可以由用户在框图建模环境中使用用户定义的块直接创建。本发明提供了解决在线性隐式公式中描述的系统的解算器以及框图建模环境中的ODE。

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