Abstract
The aim of this paper, is to propose a solution, for the model adequacy verification, in indirect adaptive control, beside the classical validation test. The dynamic system that was selected to verify the proposed solution, is represented by a flexible transmission, described by a complex four order model. Using the selected model adequacy index, it is studied the influence of the SPAB signal and perturbation amplitude, on the model adequacy and control solution, for two different tracking performances selections
