A comparative study, with theoretical analysis and digital simulations, of two conditions based on LMI for the quadratic stability of nonlinear continuous-time dynamic systems, described by Takagi-Sugeno fuzzy models, are presented. This paper shows that the methods proposed by Teixeira et al. (2003) provide better or at least the same results of a recent method presented in the literature
['Marcelo C. M. Teixeira', 'M.F.R. Catharino', 'Edvaldo Assunção', 'E.R.M. Daruichi']
A Comparative Study Between Two Relaxed LMI-Based Fuzzy Control Designs