Research and Assessment of the Reliability of a Fault Tolerant Model Using AADL

In order to solve the problem of the assessment of the reliability of the fault tolerant system, the work in this paper is devoted to analyze a subsystem of ATC (air traffic control system), and use AADL (architecture analysis and design language) to build its model. After describing the various software and hardware error states and as well as error propagation from hardware to software, the work builds the AADL error model and convert it to GSPN (general stochastic Petri net). Using current Petri Net technology to assess the reliability of the fault tolerant system which is based on ATC as the background, this paper receives good result of the experiment.