Execution patterns and fault distribution characteristics of a program will aaect the failure process and thus reliability estimates. The failure process of a software system is innuenced by many factors, and traditional software reliability engineering has found it diicult to isolate the eeect of each individual factor. A simulation approach is used to investigate the eeects of fault distribut...

A generalized approach is presented to fault simulation and test generation based on a uniform functional fault model for different system representation levels. The fault model allows to represent the defects in components and defects in the communication network of components by the same technique. Physical defects are modeled as parameters in generalized differential equations. Solutions of ...

An efficient method of parallel fault simulation for combinational circuits is proposed. The method is based on structurally synthesized BDDs (SSBDD) which allow to represent gate level circuits at higher macro level where macros represent subnetworks of gates. Converting the gate-level circuits to the macrolevel is accompanied with corresponding fault collapsing. A parallel fault analysis algo...

We propose a new approach to parallelizing fault simulation in which the test set is partitioned among the available processors. The approach can be used for any of the sequential circuit fault simulation algorithms commonly used, and it can be implemented on various diierent parallel architectures. This approach for the rst time overcomes the limitations of serial logic simulation. In addition...

To distinguish between a pair of transition faults, we need to find a test vector pair that produces different output responses for the two faults. By adding a few logic gates and one modeling flip-flop to the circuit under test (CUT), we create a diagnostic ATPG model usable by a conventional stuck-at fault test generator. Given a transition fault pair, this ATPG model either finds a distingui...

Abstract The previous chapters have described the mathematical principles and algorithms of multivariate statistical methods, as well monitoring processes when used for fault diagnosis. In order to validate effectiveness data-driven analysis methods in field diagnosis, it is necessary conduct corresponding experiments. Therefore this chapter introduces two kinds simulation platform, Tennessee E...

This paper presents simulation results of the harmonics analysis of motor current signatures under different fault condition of CSI (Current Source Inverter) fed induction motor drive. In this work, simulation studies are performed for two different post fault conditions i.e. open circuiting of one of the six IGBTs(Insulated Gate Bipolar Transistor) gate, blowing off one IGBT .Under these fault...

With the development of computer technology, the architecture of computer system has been evolved into a highly complex nonlinear system structure. According to the theory of artificial intelligence, computer system can quickly reflect the basic features of the function in human beings’ brain by simulation. Based on the control principles of fuzzy neural network algorithm, the principle of slot...