Methodology of fault injection based on EDA software

In this paper, an agile fault injection method by means of discretional fault mode is introduced, in order to go over the localization of the conventional fault injection method based on the hardware, and to offer a new means that is used to validate the testability indexes of PHM system. After describing the basic principle of such method, this paper discusses universal elements and groupware modeling, fault injection and fault confirm method in detail. Finally, by using an audio processing circuit belonged to some airplane, it is validated that this fault injection method is valid and it will be significant for engineering practicability.