基于PID增益的HVAC系统的新兴模糊控制设计 毕业论文外文翻译.docxVIP

外文资料A Novel Fuzzy Controller DesignBased-on PID Gains for HVAC Systems*Lv Hongli Duan Peiyong Jia Lei School of Information and Electrical Engineering School of Control Science and Engineering Shandong Jianzhu University Shandong University Ji’nan, Shandong Province, China, 250101 Ji’nan, Shandong Province, China, 250061 hllv@sdjzu.edu.cn mailto:jialei@sdu.edu.cnjialei@sdu.edu.cnAbstract - The Heating, Ventilating, and Air-Conditioning systems (HVAC systems) are typical nonlinear time-variable multivariate systems with disturbances and uncertainties. A new fuzzy control strategy based on the PID parameters tuning to control HVAC systems is proposed in this paper. It takes full advantage of mature technologies of PID controller to improve the design of fuzzy controller. The mathematical analytical expression of parameters between fuzzy controllers and gains coefficients of PID controllers is got based on the structure analysis of fuzzy controllers. and the fuzzy controller is designed through gains tuning of PID controller based the analytical relations. Then this fuzzy controller was applied into temperature control in HVAC systems. The simulation test results showed it is effective and compared with the conventional PID control, the proposed fuzzy control algorithm has less overshoot, shorter setting time and better robustness etc.Index Terms - Fuzzy control, Structure analysis, Robustness, HVAC systemsI. INTRODUCTIONModern process control problems in the process industries are dominated by nonlinear time-varying behavior, disturbances and uncertainties[1]. However more than 90% plants are controlled by the well-established PID controllers in industrial automation and process until today[2]. Morover, conventional PID controllers have gone through a technological evolution because many sophisticated algorithms have been used to improve its work under difficult conditions. Especially fuzzy logic inferences and neuron network based on self-tuning schemes of PID contro