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ConcertoFLA-based Multi-concern Assurance for Space Systems



Zulqarnain Haider, Barbara Gallina, Anna Carlsson , Silvia Mazzini , Stefano Puri

Publication Type:

Journal article


Ada User Journal


Space systems often need to be engineered in compliance with standards such as ECSS and need to ensure a certain degree of dependability. Given the multi-faceted nature of dependability (characterized by a set of concerns), assuring dependability implies multi-concern assurance, which requires the modelling of various system characteristics and their co-assessment and co-analysis, in order to enable the management of trade-offs between them. CHESS is a systems engineering methodology and an open source toolset, which includes ConcertoFLA. ConcertoFLA allows users (system architects and dependability engineers) to decorate component-based architectural models with dependability-related information, execute Failure Logic Analysis (FLA) techniques, and get the results back-propagated onto the original model. In this paper, we present the customization of the CHESS methodology and ConcertoFLA in the context of the ECSS standards to enable architects and dependability engineers to define a system and perform dependability-centered co-analysis for assuring the required non-functional properties of the system according to ECSS requirements. The proposed customization is then applied in the context of spacecraft Attitude Control Systems engineering, which is a part of satellite on-board software.


author = {Zulqarnain Haider and Barbara Gallina and Anna Carlsson and Silvia Mazzini and Stefano Puri},
title = {ConcertoFLA-based Multi-concern Assurance for Space Systems},
volume = {40},
number = {1},
pages = {1--7},
month = {March},
year = {2019},
journal = {Ada User Journal},
url = {}