A risk-aware architecture for resilient spacecraft operations
Name
Williams_A risk-aware.pdf
Size
8.37 MB
Format
Adobe PDF
Checksum (MD5)
ca5ca8b68824857707b4216c3910526e
Author(s)
McGhan, Catharine L. R.
Murray, Richard M.
Serra, Romain
Ingham, Michel D.
Ono, Masahiro
Estlin, Tara
Williams, Brian C
Date Issued
June 2015
Journal
2015 IEEE Aerospace Conference
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Citation
.McGhan, Catharine L. R. et al. “A Risk-Aware Architecture for Resilient Spacecraft Operations.” 2015 IEEE Aerospace Conference, 7-14 March, 2015, Big Sky, MT, USA, IEEE, 2015. 1–15.
Version
Author's final manuscript
Abstract
In this paper we discuss a resilient, risk-aware software architecture for onboard, real-time autonomous operations that is intended to robustly handle uncertainty in space-craft behavior within hazardous and unconstrained environments, without unnecessarily increasing complexity. This architecture, the Resilient Spacecraft Executive (RSE), serves three main functions: (1) adapting to component failures to allow graceful degradation, (2) accommodating environments, science observations, and spacecraft capabilities that are not fully known in advance, and (3) making risk-aware decisions without waiting for slow ground-based reactions. This RSE is made up of four main parts: deliberative, habitual, and reflexive layers, and a state estimator that interfaces with all three. We use a risk-aware goal-directed executive within the deliberative layer to perform risk-informed planning, to satisfy the mission goals (specified by mission control) within the specified priorities and constraints. Other state-of-the-art algorithms to be integrated into the RSE include correct-by-construction control synthesis and model-based estimation and diagnosis. We demonstrate the feasibility of the architecture in a simple implementation of the RSE for a simulated Mars rover scenario.
MIT Department
Massachusetts Institute of Technology. Department of Aeronautics and Astronautics
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1109/AERO.2015.7119035
