The Dynamic Model of Closed-Loop Supply Chain with Product Recovering and its Robust Control

In recent years, closed-loop supply chain (CLSC) operation has been an important method to recover waste materials and products for resource conservation and environmental protection and paid more attention in industry and academia. We establish a dynamic model for closedloop supply chain with product recovering with the consideration of some uncertainties including remanufacturing rate, disposal rate, operation costs and customers’ demand in this paper. Furthermore, we provide some insights about robust operation of closed-loop supply chain and propose a robust H∞ control strategy based on linear matrix inequality (LMI) arithmetic. Some simulations are executed to validate the effectiveness of our control strategy, and the results show that through state feedback control of supply chain inventories, it can not only make the CLSC achieve the goal of restraining uncertainty disturbances, but also result in an ideal operation cost. Streszczenie. Closed loop supply chain (CLCP – zamknieta petla lancucha zasobow) jest dziś wazną metodą odzyskiwania zmarnowanego materialu i produktu w celu ochrony środowiska i konserwacji zasobow. Zaproponowano model dynamiczny uwzgledniający niepewności typu tempo produkcji, tempo usuwania, koszty operacyjne i ządania klienta. (Model dynamiczny lancucha CLSC uwzgledniający odzyskiwanie produktow i odporne sterowanie)