Switching Optimal Controller For Evaporation Temperature And Superheat Of Air-Conditioning Cooling System

摘要

In this paper, a 2 input-2 output dynamic lumped parameter model of the refrigeration cycle is established for residential air-conditioning equipment. Based on the nonlinear characteristics of the refrigeration system and the idea of switching control, the system model is linearized at some selected stable operating points, and respectively a set of linear system models are obtained. By using the linear quadratic optimal control, the optimal state feedback controller is designed for each sub-model, and then the switching controller is designed. The simulation results show the effectiveness of the designed controller.