The Application And Study Of Fuzzy Identification And Fuzzy Control Technology For Central Air-conditioning System In Power-plant

With large-median power plant constantly reconstructed and constructed inland, the air-conditioning system is very prevalenced. The energy consumption of air-conditioning increases greatly, which puts the study of energy efficiency in industrial buildings to the most important position.Firstly, in this project, the design of automatic control system which consists of industrial computer and PLC in Power-plant's central air-conditioning system is presented. Secondly, the typical subsystem in Power-plant's central air-conditioning system named electronic equipments room air-conditioning subsystem is the dissertation study object; Thirdly, using the Fuzzy relation identification technology method, a fuzzy-model of electronic equipments room temperature control system is built, Then, its fuzzy controller is designed; considering the good and bad point of fuzzy control and traditional PID control, a kind of method basing fuzzy-PI control is presented for electronic equipments room temperature control system. Human Machine Interface(HMI) is given which are developed with iFIX(a kind of industry control configuration software). Finally, through MATLAB simulation demonstrates and verifies the conriol performance of fuzzy-Pi control in comparison with the traditionally designed PID control.Simulation results show that the fuzzy-PI control has good dynamic performance, anti-jamming and high accuracy. The experimental result of PID control proves the necessity of new control method , and the fuzzy-PI control in this thesis is content to temperature control of electronic equipments room.