With the aid of disturbance observer strategy. this article aims to investigate the disturbance rejection and stabilization problems for periodic piecewise time-varying systems that are subject to time-varying delays. parameter uncertainties. nonlinear perturbations and exogenous disturbances. https://safeersappliancers.shop/product-category/bosch-serie-6-kin85afe0g-integrated-50-50-fridge-freezer/