FUZZY-PID CONTROL OF FRESH AIR FOR VAV AIR CONDITIONING SYSTEM
Nowadays, the variable air volume (VAV) air conditioning system has gradually become popular in China because of its significant energy saving. Fresh air control for VAV air conditioning systems is important in the aspects of saving energy and improving indoor air quality (IAQ). However, having the characteristics of non-linear, time varying and frequently changing of pollutants emission rate, the control system can not work effectively with conventional PID method. Regarding indoor CO2 level as controlled object , this paper adopts fuzzy logic to modify parameters of PID controller timely, so that the output of controlled object can follow the reference model well. Under the MATLAB platform, several simulation experiments have been carried out in accordance with actual conditions by altering given values, changing controlled object characteristic and adding disturbance. The results show that the proposed method is not only robust, but also it gives fast dynamic response time, and has the better control performance than PID controller.
Xiaosong GU Hanqing WANG
Central South University, School of Energy and Science Engineering,Changsha, 410083, China;Changsha Hunan University of Technology, Department of Civil Engineering Zhuzhou, 412008, China
国际会议
The 22nd International Congress of Refrigeration(第22届国际制冷大会)
北京
英文
2007-08-21（万方平台首次上网日期，不代表论文的发表时间）