A new method of approximatin for computing failure frequecy of system

An approximation method for computing system failure frequency is proposed. We took a conventional approximation method that uses multilinear polynomials to compute the lower and upper bounds of system availability and transformed it to compute the lower and upper bounds of system failure frequency without increasing the computing complexity. Most of the currently used high-speed approximation methods that compute the lower and upper bounds of availability use multilinear polynomials, so it is a relatively simple matter to transform these methods to new methods for computing failure frequency while preserving the high speed and accuracy of the originals. Experimental results demonstrated that the proposed system can compute system failure frequency with both high speed and high accuracy.