电液位置伺服系统的规则自校正模糊PID控制器-中南大学学报.PDFVIP

41 3 () Vol.41 No.3 2010 6 Journal of Central South University (Science and Technology) Jun. 2010 PID ( 150080) (RTW)MATLAB PID PID PID PID TH137 A 1672−7207(2010)03−0960−06 Rule self-tuning fuzzy-PID controller of electro-hydraulic position servo system SHAO Jun-peng, WANG Zhong-wen, LI Jian-ying, HAN Gui-hua (College of Mechanical and Power Engineering, Harbin University of Science and Technology, Harbin 150080, China) Abstract: The composition and principle of the electro-hydraulic position servo control system were introduced, and system model identification and verification of electro-hydraulic position servo system were carried out based on semi-physical simulation environment of real-time workshop (RTW) and system identification toolbox in MATLAB. A rule self-tuning fuzzy-PID controller was presented to control the identified model and a new fuzzy inference algorithm was designed to adjust the rules of fuzzy controller on line. The results of simulation show that the performance of the electro-hydraulic position servo system based on rule self-tuning fuzzy-PID controller is improved significantly, which not only holds the precise character of PID controller but also possesses the flexible advantage of fuzzy controller, and it can guarante that the system has good dynamic and static quality. Key words: electro-hydraulic position servo system; model identification; self-tuning fuzzy-PID; semi-physical simulation PID [1] PID [4−5]