A Confidence-Based Software Voter for Safety-Critical Systems

Mohammadreza Rezaee, Yasser Sedaghat, Masoud Khosravi-Farmad
2014 2014 IEEE 12th International Conference on Dependable, Autonomic and Secure Computing  
To tolerate software faults, N-Version Programming (NVP) and N-Modular Redundant (NMR) techniques are widely employed. In these techniques, N modules operate on the same data and send their outputs to a software voter. Since the voter is a single point of failure in the techniques, availability and safety are essential requirements. In this paper a confidence-based software voting technique is proposed. The proposed technique considers weight oscillation and confidence of each module to improve
more » ... h module to improve availability and safety of the voter. Evaluation results showed that availability and safety of confidence-based software voter in contrast with standard majority voter and adaptive majority voter has improved about 4.4%, 4.9%, and 5.8% for three error injection scenarios.
doi:10.1109/dasc.2014.43 dblp:conf/dasc/RezaeeSF14 fatcat:yoayh7lz2jakbaocmwbrf26ngi