Comfortable Voter Design in Highly Effective Bandwidth Usage and Dynamic Threshold Selection for Safety Critical System
Published: 2013
Author(s) Name: Umamaheswararao Batta, Seetharamaiah Panchumarthy, Phanikumar Singamsetty |
Author(s) Affiliation: Andhra University, Visakhapatnam, Andhra Pradesh, India
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Abstract
Safety and availability of safety critical systems are
increased by using masking method. The main aim of
this research paper is designing dynamic bandwidth
selection for fuzzy voter for Railroad Crossing Control
System (RCCS) and masking the faults. The failure
of RCCS leads to damage of property and at-times
loss of human life. Safety and availability of the safety
critical system is calculated. The major limitation of
existing fuzzy voters is uncertainties associated with
the inputs and three values (a, b and c) are required as
threshold. Only fixed factors are used for a particular
set of information and acquainted information varies. In
this paper, a dynamic fuzzy voter with three automatic
values (a, b and c) are proposed in each voting
cycle and existing standard weighted average voting
algorithm, flexible weighted average voting algorithm ,
weighted average voting with soft threshold algorithm
and Fuzzy weighted average voting are surveyed and
their merits and demerits are discussed. Safety overall
performance is empirically analyzed by using the
fixed fluffy heavy average voter, powerful fluffy voters,
fixed fluffy voter with ratings and fluffy powerful fluffy
voter with ratings on a TMR system for 10000 voting
periods and RMSE is measured for fixed and powerful
fluffy voter. The approach uses some form of voting to
avoid the classical fuzzy rules used for inference and
compute scores that can be used as weighted factors
directly instead of computing several rule outputs. We
also briefly compare Static bandwidth fuzzy Weighted
Average Voter, Dynamic bandwidth fuzzy Weighted
Average Voter, Static fuzzy voter without weighted
Average Voter and Dynamic fuzzy voter without
Weighted Average Voter.
Keywords: Fuzzy Voter, Safety Critical Systems
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