Distributed simulator design by using of SimNetwork to overcome speed limit on GenSim

Proceedings of 5th International Conference on Recent Advances in Space Technologies - RAST2011 Pub Date : 2011-06-09 DOI:10.1109/RAST.2011.5966872

Cheol-hea Koo, Hoon-Hee Lee, Yee-Jin Cheon

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引用次数: 5

Abstract

GenSim(Generic Simulator) is a simulator infrastructure which is on engineering development level and will be used at software validation and verification of satellite flight software[7]. GenSim is able to run software simulator models which follow ESA SMP/SMI standard. But also GenSim has to handle HILS with real I/O card, e.g. MIL-STD-1553B card or RS-422 digital I/O board to communicate with real spacecraft equipments. So GenSim has various shapes according to the usage and may take some limitation of speed to run it as realtime. To overcome this limitation, GenSim is designed to cooperate with remote GenSim which is separated by physically but connected by ethernet connection. In this case, GenSim is split with two or more simulator parts and there are some communication and synchronization mechanisms which are needed to maintain connection between the separated simulator parts. Some parts may take a role of simulator controller and other parts may take a role of external I/O simulator for interfacing with real spacecraft components.

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利用SimNetwork设计分布式仿真器，克服GenSim的速度限制

GenSim(Generic Simulator)是一种处于工程开发水平的模拟器基础设施，将用于卫星飞行软件的软件验证和验证[7]。GenSim能够运行遵循ESA SMP/SMI标准的软件模拟器模型。但GenSim也必须使用真正的I/O卡来处理HILS，例如MIL-STD-1553B卡或RS-422数字I/O板来与真正的航天器设备进行通信。因此，GenSim根据使用情况有不同的形状，并且可能需要一些速度限制才能实时运行。为了克服这一限制，GenSim被设计为与远程GenSim合作，远程GenSim是物理隔离的，但通过以太网连接。在这种情况下，GenSim被分成两个或多个模拟器部件，并且需要一些通信和同步机制来维持分离的模拟器部件之间的连接。有些部件可以充当模拟器控制器，有些部件可以充当外部I/O模拟器，与实际航天器部件进行接口。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Proceedings of 5th International Conference on Recent Advances in Space Technologies - RAST2011

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