Optimal sliding mode control for supply chain systems subject to demand disturbance

This paper is concerned with the sliding mode control for the dynamic supply chain system subject to demand disturbance of market. By taking the parameter perturbations and demand disturbance of the market into account, a nonlinear uncertain model of the supply chain system is constructed first. Then, a sliding mode control scheme and an optimal sliding mode control scheme are proposed to stabilize the supply chain systems. It is found through simulation results that both the designed sliding mode controller and the optimal sliding mode controller can improve the performance of the supply chain systems. In addition, compared with the optimal sliding mode controller and the sliding mode controller, the former is more efficient to weaken the bullwhip effects and thereby improve the supply chain systems than the latter.