DocumentCode :
1945392
Title :
Study on voting safe function block and safety system
Author :
Song, Yan ; Xu, Aidong ; Wang, Tianran ; He, Houjian
Author_Institution :
Shenyang Inst. of Autom., Chinese Acad. of Sci., Shenyang, China
fYear :
2010
fDate :
13-15 Aug. 2010
Firstpage :
686
Lastpage :
691
Abstract :
Voting mechanism based safe function block compatible with IEC 61499 is proposed. The voting safe function block can vote the discrete or continuous parameters and get a reliable value. A new safe communication approach is proposed for not only error sensing but also error correcting. The approach use a triple data field copies to address error correcting problem, and more safety is achieved in communication by this way. By using voting safe function block, a more safe system based on common control devices is designed. Furthermore, a markov model is established to describe safety and reliability of the voting safe function block based safe system. At the end, simulation under given parameters is done, which is about PFD, PFS and MTTF factors.
Keywords :
IEC standards; Markov processes; error correction; safety systems; IEC 61499; Markov model; control device; error correcting problem; safety system; voting mechanism; voting safe function block; Algorithm design and analysis; IEC standards; Markov processes; Phase frequency detector; Redundancy; Safety;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Intelligent Control and Information Processing (ICICIP), 2010 International Conference on
Conference_Location :
Dalian
Print_ISBN :
978-1-4244-7047-1
Type :
conf
DOI :
10.1109/ICICIP.2010.5564325
Filename :
5564325
Link To Document :
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