Analog Circuit Fault Simulation Based on Saber

Although analog circuit simulation tool like Saber software are numerous, however, it is lack of software which can simulate analog circuits affected by fault modes. Research in the fields of analog circuit fault simulation has not achieved the same degree of success as digital circuits, because of the difficulty in modeling the more complex analog behavior. This article presents a new approach to this problem by simulating the good and fault circuits in Saber and introduces the general circuit fault simulation process. In view of failure mechanism under the components, some novel approaches for fault modeling are proposed. Fault injection and simulation interface based on Saber are detailed in this paper. This method is verified by an example and the actual engineering value is indicated.