LMI-Fuzzy Control Design for Non-Minimum-Phase DC-DC Converters: An Application for Output Regulation

Robust control techniques for power converters are becoming more attractive because they can meet with most demanding goals like uncertainties. In this sense, the Takagi-Sugeno (T-S) fuzzy controller based on linear matrix inequalities (LMI) is a by intervals that has been relatively unexplored output-voltage regulation problem in switching converters. Through technique it possible to minimize disturbance rejection level, satisfying constraints over decay rate of state variables as well effort. Therefore, guarantee, priori, stability large-signal broad operation domain. This work presents design synthesis T-S model non-minimum phase dc-dc converters, such boost and buck-boost. First, starting from canonical bilinear expression, obtained, allowing define structure through parallel distributed compensation (PDC). Finally, LMIs solved defined specification close loop MATLAB toolbox LMI. Simulations experimental results 60 W prototype presented verify theoretical predictions.