Composite adaptive fuzzy H∞ tracking control of uncertain nonlinear systems

摘要: In the H^~ tracking-based adaptive fuzzy controllers (HAFCs) of perturbed uncertain nonlinear systems, additional control terms would greatly degrade approximation abilities, which violates original intention using logic systems. To solve this problem, a composite HAFC (CHAFC), combines with adaptation technique, is proposed in paper. Outside region, robust stabilization controller developed to achieve semi-global stability closed-loop system. Within series-parallel identification model introduced into an indirect construct CHAFC that can simultaneously and tracking control. It proved system obtains performance sense both modeling errors converge small neighborhoods zero. Simulated applications aircraft wing rock suppression inverted pendulum demonstrate approach not only effectively solves aforementioned but also obviously outperforms previous approaches.