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Model-based Prognostics with Concurrent Damage Progression Processes
Model-based prognostics approaches rely on physics-based models that describe the behavior of systems and their components. These models must account for the several different... -
Improving Multiple Fault Diagnosability using Possible Conflicts
Multiple fault diagnosis is a difficult problem for dynamic systems. Due to fault masking, compensation, and relative time of fault occurrence, multiple faults can manifest in... -
An Event-based Approach to Hybrid Systems Diagnosability
Diagnosability is an important issue in the design of diagnostic systems, because it helps identify whether sufficient information is available to distinguish all the faults.... -
Improving Diagnosability of Hybrid Systems through Active Diagnosis
Fault diagnosis is key to ensuring system safety through fault-adaptive control. This task is diffcult in hybrid systems with combined continuous and discrete behaviors because... -
Temperature Stratification in a Cryogenic Fuel Tank
A reduced dynamical model describing temperature stratification effects driven by natural convection in a liquid hydrogen cryogenic fuel tank has been developed. It accounts for... -
Dynamical Model of Rocket Propellant Loading with Liquid Hydrogen
A dynamical model describing the multi-stage process of rocket propellant loading has been developed. It accounts for both the nominal and faulty regimes of cryogenic fuel...