Fuzzy control of cold storage refrigeration system with dynamic coupling compensation (Q1629563)

Summary: Cold storage refrigeration systems possess the characteristics of multiple input and output and strong coupling, which brings challenges to the optimize control. To reduce the adverse effects of the coupling and improve the overall control performance of cold storage refrigeration systems, a control strategy with dynamic coupling compensation is studied. First, dynamic model of a cold storage refrigeration system is established based on the requirements of the control system. At the same time, the coupling between the components is studied. Second, to reduce the adverse effects of the coupling, a fuzzy controller with dynamic coupling compensation is designed. As for the fuzzy controller, a self-tuning fuzzy controller is served as the primary controller, and an adaptive neural network is adopted to compensate the dynamic coupling. Finally, the proposed control strategy is employed to the cold storage refrigeration system, and simulations are carried out in the condition of start-up, variable load, and variable degree of superheat, respectively. The simulation results verify the effectiveness of the fuzzy control method with dynamic coupling compensation.