Fault-Tolerant Distributed Attitude and Orbit Control System for Space Applications

摘要

In this paper, an innovative fault-tolerant distributed design of a satellite Attitude and Orbit Control System (AOCS) is proposed. First, the system functionality and application tasks are specified, and measurable performance parameters are defined. Then a novel multiprocessor system-onchip (MPSoC) AOCS computer is designed, which is configured to operate as a fault-tolerant distributed computing system. Next the distributed MPSoC AOCS is prototyped using XILINX Zynq FPGAs. The prototype is fully tested as hardware in the loop with a MATLAB AOCS modeland a fault injection system. The experimental results confirm that the fault-tolerant distributed computing scheme outperforms existing on-board approaches in terms of resilience to processor failures and computational performance.