Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/30104
Title: ORTEGA : an efficient and flexible online fault tolerance architecture for real-time control systems
Authors: Liu, X
Wang, Q 
Gopalakrishnan, S
He, W
Sha, L
Ding, H
Lee, K
Keywords: Industrial control
Real-time and embedded systems
Reliability and robustness
Issue Date: 2008
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE transactions on industrial informatics, 2008, v. 4, no. 4, 4753900, p. 213-224 How to cite?
Journal: IEEE transactions on industrial informatics 
Abstract: Fault tolerance is an important aspect in real-time computing. In real-time control systems, tasks could be faulty due to various reasons. Faulty tasks may compromise the performance and safety of the whole system and even cause disastrous consequences. In this paper, we describe On-demand Real-TimE GuArd (ORTEGA), a new software fault tolerance architecture for real-time control systems. ORTEGA has high fault coverage and reliability. Compared with existing real-time fault tolerance architectures, such as Simplex, ORTEGA allows more efficient resource utilizations and enhances flexibility. These advantages are achieved through the on-demand detection and recovery of faulty tasks. ORTEGA is applicable to most industrial control applications where both efficient resource usage and high fault coverage are desired.
URI: http://hdl.handle.net/10397/30104
ISSN: 1551-3203
EISSN: 1941-0050
DOI: 10.1109/TII.2008.2010774
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