Energy Conservation and Power Bonds in Co-Simulations: Non-Iterative Adaptive Step Size Control and Error Estimation

Autor:	Sadjina, Severin, Kyllingstad, Lars T., Pedersen, Eilif, Skjong, Stian
Rok vydání:	2016
Předmět:	Computer Science - Systems and Control Computer Science - Computational Engineering Finance and Science Computer Science - Distributed Parallel and Cluster Computing I.6.8
Zdroj:	Engineering with Computers (2016)
Druh dokumentu:	Working Paper
DOI:	10.1007/s00366-016-0492-8
Popis:	Here, we study the flow of energy between coupled simulators in a co-simulation environment using the concept of power bonds. We introduce energy residuals which are a direct expression of the coupling errors and hence the accuracy of co-simulation results. We propose a novel Energy-Conservation-based Co-Simulation method (ECCO) for adaptive macro step size control to improve accuracy and efficiency. In contrast to most other co-simulation algorithms, this method is non-iterative and only requires knowledge of the current coupling data. Consequently, it allows for significant speed ups and the protection of sensitive information contained within simulator models. A quarter car model with linear and nonlinear damping serves as a co-simulation benchmark and verifies the capabilities of the energy residual concept: Reductions in the errors of up to 93% are achieved at no additional computational cost. Comment: 14 pages, 11 figures, 12 tables
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1602.06434 Zobrazit plný text záznamu View this record from Arxiv