Cascading Failure Analysis Method of Avionics Based on Operational Process State

Abstract

In the context of functional integration of avionics, the complex operational process interaction has increased the complexity of the cascading failure analysis, which is significant to evaluate the overall safety status and design rationality. In order to achieve a dynamic and dimensional evaluation of cascading failures, this paper proposes a safety analysis method based on operational process state, with an operational process-orientated hierarchical system functional framework established by means of the state machine. Then the cascading failure causation dynamic search algorithms and the cascading failure causation tree structure are designed respectively to describe the failure propagation in combination. Consequently, cascading failure propagation paths and minimum cut sets are generated automatically based on the search result. By using the aircraft integrated surveillance system as a research object, the effect and cause of cascading failure assessed in various failure scenarios have validated the effectiveness of the proposed method, and the comparison against the existing model based safety analysis methods demonstrates the higher flexibility and efficiency of the proposed method. The proposed method enables the dynamic and overall assessment of system safety status concentrating on the cascading failure utilizing the operational process state, and further enhances the systemization and automation level of the safety evaluation process in the early development phase.

Research on cascading effect analysis of civil aircraft electrical power system failures

“…In addition to engineering tests, model-based safety assessment (MBSA) has been more and more widely studied and applied in civil aircraft CEA evaluation [9][10]. MBSA automates or semiautomates the safety analysis by transforming the MBSA work item into a formal model and performing automated or semi-automated safety analysis based on the formal model of the system.MBSA can be implemented at the early stage of model development.…”

Analysis of Cascading Failure Evolution Process of High Proportion New Energy Power System

“…Reference [9] examined the dependency of the operation of the power grid on the control network. Reference [10] proposed a safety analysis method based on operational process state, with an operational process-orientated hierarchical system functional framework established by means of the state machine.…”