论文标题

导弹:通过全局线性公式对几乎线性差异系统上共模拟耦合约束的有效分辨率

MISSILES: an Efficient Resolution of the Co-simulation Coupling Constraint on Nearly Linear Differential Systems through a Global Linear Formulation

论文作者

Eguillon, Yohan, Lacabanne, Bruno, Tromeur-Dervout, Damien

论文摘要

在共同模拟的环境中,分别解决了微分方程的互连系统,但在这些决议期间,它们会定期互相传达数据。为了提高稳定性和准确性,已经开发了迭代共模拟方法。这种方法表明,系统必须集成一个或多次共同模拟步骤(两个连续通信之间的间隔),以便找到交换数据的最佳满足接口值(根据给定的耦合约束)。这就要求模块模型中涉及的每个系统都能够回滚:重新融合已经与不同输入命令集成的时间间隔的能力。在Eguillon等人先前引入的论文中。在2022年,提出了哥斯一种过程,并包括估计器对迭代过程的非last集成替换不滚动能力的系统。本文介绍的导弹算法包括在使用Ifosmondi-jfm迭代共模拟方法模拟的每个模块模型的系统上应用肋骨过程(Eguillon等人于2021年引入)。确实,在这种情况下,可以避免在每个系统估计器上的迭代部分,因为共同模拟步骤的全局分辨率可以写成一个单个的全局线性系统来解决。因此,与使用Costarica工艺应用于模拟回滚的Ifosmondi-JFM迭代共模拟方法相比,导弹是一种非涉及方法,它导致相同的解决方案。

In a co-simulation context, interconnected systems of differential equations are solved separately but they regularly communicate data to one another during these resolutions. Iterative co-simulation methods have been developed in order to enhance both stability and accuracy. Such methods imply that the systems must integrate one or more times per co-simulation step (the interval between two consecutive communications) in order to find the best satisfying interface values for exchanged data (according to a given coupling constraint). This requires that every system involved in the modular model is capable of rollback: the ability to re-integrate a time interval that has already been integrated with different input commands. In a paper previously introduced by Eguillon et al. in 2022, the COSTARICA process is presented and consists in replacing the non-rollback-capable systems by an estimator on the non-last integrations of the iterative process. The MISSILES algorithm, introduced in this paper, consists in applying the COSTARICA process on every system of a modular model simulated with the IFOSMONDI-JFM iterative co-simulation method (introduced by Eguillon et al. in 2021). Indeed, in this case, the iterative part on the estimators of each system can be avoided as the global resolution on a co-simulation step can be written as a single global linear system to solve. Consequently, MISSILES is a non-iterative method that leads to the same solution than the IFOSMONDI-JFM iterative co-simulation method applied to systems using the COSTARICA process to emulate the rollback.

扫码加入交流群

加入微信交流群

微信交流群二维码

扫码加入学术交流群,获取更多资源