In this paper. the event-trigger adaptive control problem is investigated for a class of nonlinear systems with unknown external disturbance. An estimator is designed to estimate the unknown upper bound of the disturbance-like term. which presents the uncertainties caused by external disturbance. https://safeersappliancers.shop/product-category/aeg-l6fbg842r-prosense-8-kg-1400rpm-washing-machine-white/