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This paper continues the study of a Model Reference Adaptive Guidance implementation to the tracking of the trajectory of a winged re -entry vehicle , as well as a Model Reference Adaptive Control implementation for maintaining closed -loop stability . This design m akes use of Simple Adaptive Control theory, which aims at tracking the output of a reference model. Although the tests show good results , the paper attempts to analyze the eventual satisfaction of customary sufficient passivity that could guarantee the rob ust stability of the adaptive control system beyond th os e operational conditions that can be simulated or tested . Therefore, along with simulation results, the paper explores ways for analysis of passivity conditions in a very large nonlinear plant. As the analysis shows that the plant does not satisfy the sufficient passivity conditions, ways to fulfill those conditions are proposed through the use of parallel feedforward. |
