Knowledge representation and validation methods for dynamic failure modes in aerospace launch systems

A specification and formal verification method is presented for dynamic failure modes in aerospace launch systems. The dynamic fault model designed through this approach enables real-time fault diagnosis systems in the aerospace field to possess diagnostic capabilities for complex and diverse fault characteristics. The dynamic fault models are represented by temporal facts， however， the complexity and abstract nature of temporal facts make them difficult to be validated through manual analysis or testing. By describing the semantics of temporal symptoms through temporal logic formulas， the correctness of the fault model is allowed to be verified through model checking methods. This verification process can be automated by using model checking tools. Moreover， the dynamic fault model does not require formal specifications， which allows domain experts to focus solely on domain-specific issues when constructing fault models. In aerospace engineering practice， the key properties of fault models through automated verification of model checking methods can provide domain experts with a reliable and verifiable mathematical approach for designing fault models.