Research on Failure Rate Algorithm for Failure Event"Systematic Voting Error"
Failures in the signal source,signal transmission cable,signal acquisition,etc.can result in incorrect signals being ob-tained by the fly-by-wire flight control system.Even if the signals are monitored and voted on,it is still possible to output an incorrect vote value due to multiple signal errors.As required by CCAR 25.1309,there is a need to quantitatively confirm that the probability of occurrence of the above events is commensurate with the safety impact level of the event.Based on the characteristics of the system's monitoring and voting logic,a method for calculating the failure rate of the system due to a signal error,"system voting value error",is given by adding assumptions.Using this method gives a conservative but probabilistic quantitative result that can be used to charac-terize the system's compliance with the requirements of CCAR 25.1309.
fly-by-wire flight control systemfailure ratewrong vote valuesafety assessmentCCAR25.1309
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