document: Nonlinear adaptive control via sliding-mode state and perturbation observer The paper presents a nonlinear adaptive controller -LRB- NAC -RRB- for single-input single-output feedback linearisable nonlinear systems . A sliding-mode state and perturbation observer is designed to estimate the system states and perturbation which includes the combined effect of system nonlinearities , uncertainties and external disturbances . The NAC design does not require the details of the nonlinear system model and full system states . It possesses an adaptation capability to deal with system parameter uncertainties , unmodelled system dynamics and external disturbances . The convergence of the observer and the stability analysis of the controller/observer system are given . The proposed control scheme is applied for control of a synchronous generator , in comparison with a state-feedback linearising controller -LRB- FLC -RRB- . Simulation study is carried out based on a single-generator infinite-bus power system to show the performance of the controller/observer system
doc_bio_tags: B I I O O O O B I O O O O O O O O B O O O O O O O O O O O O O B I O O O O O O O O O O O O O O O O O O O O B I O O B O O O O O O O O O O O O O O O O O O O O O O O O O B I O B I I O B I O O B O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B O O O O O O O O O O O O O O O O O O O O O O