VHDL IMPLEMENTATION OF FAULT TOLLERENT CONTROL SYSTEM

A Kogge-Stone configuration can be used to apply a fault tolerant parallel-prefix adder due to inherited redundancy in the carry tree. Though thisdesign can be used to precise a fault in the carry-tree, noproviding was prepared for fault detectability. This paperintendsusing a sparse Kogge-Stone adder that isproficient of both fault correction and fault correctiondetectability.A number of smaller ripple carry adders are required to completethe sparse carry tree. Two extra ripple carryadders permit fault tolerance to be accomplished. TMR-RCA i.e. a triplemoderedundant ripple carry adder is usedas a point of reference. An FPGA platform carries out the Synthesis and simulation process. It is known that theTMR-RCA is the finestmethod for an FPGA faulttolerantimplementation because of the ease of theapproach and the usage of the fast-carry chains. However,the higher performance of the carry-tree above a ripplecarry adder in a Very Large Scale integrated circuit (VLSI) implementation creates thisproposed approach attractive for ASIC designs.