Proceedings of the KSRS Conference (대한원격탐사학회:학술대회논문집)
- Volume 1
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- Pages.271-273
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- 2006
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- 1226-9743(pISSN)
MI2U CONTROL FLIGHT SOFTWARE DESIGN AND DEVELOPMENT IN COMS
- Kang, Seo-Yeon (Communication Satellite Systems Department, COMS Program Office, Korea Aerospace Research Institute) ;
- Park, Su-Hyun (Communication Satellite Systems Department, COMS Program Office, Korea Aerospace Research Institute) ;
- Koo, Cheol-Hae (Communication Satellite Systems Department, COMS Program Office, Korea Aerospace Research Institute) ;
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Yang, Koon-Ho
(Communication Satellite Systems Department, COMS Program Office, Korea Aerospace Research Institute)
;
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Choi, Seong-Bong
(Communication Satellite Systems Department, COMS Program Office, Korea Aerospace Research Institute)
- Published : 2006.11.02
Abstract
In this paper, we describe the MI2U ORB function which is a part of the flight software executed on SCU and controls MI2U/MI which is one of three payloads on COMS. The MI2U ORB function manages MI2U/MI redundancy and reconfiguration, monitors MI2U/MI equipment, performs FDIR, and provides the routing service of commands from Ground/IP (Interpreted Program) through the current used 1553 channel. The MI2U hardware achieves the interface between the SCU and the MI. The MI2U is connected to SCU through MIL-STD-1553B system bus. The MI2U has the internal redundancy but is used in cold redundancy. The MI2U ORB function considers that they are not expected to be simultaneously switched on. The connection combination between MI2U and MI is electrically cross-strapped. However the MI2U ORB function considers only two combinations (MI2U A + MI 1, MI2U B + MI 2). Other combinations can be manually achieved by ground in case of the emergency case.