Study of Electro-Hydraulic Force Servo Control System Based on Fuzzy Control
Because there is flexible load in electro-hydraulic force servo control system, and there is second-order differential section whose oscillation frequency is low in the numerator of the transfer function, the frequency range of the electro-hydraulic force servo control system is influenced badly and the system may oscillate easily even is instability. Aiming at this characteristic of electro-hydraulic force servo control system and the characteristic of the system whose open loop gain is small; the fuzzy control theory is applied to electro-hydraulic force servo control system this typical nonlinear system in order to improve the performance of the system. The models of the system with the fuzzy control theory and without it are built and the simulation and experiment study is done. Comparing the control result of the controller with the fuzzy control theory to the control result of the controller with the traditional PID, and from the results of simulation and experiment, we can find that the controller with the fuzzy control theory can not only increase the frequency range of system, but also improve the precision of system, and the controller can quicken the response ability of the system obviously.
electro-hydraulic force sevo control system flezible load fuzzy control theory nonlinear system PlD controller
Jian-ying LI Jun-peng SHAO Zhong-wen WANG Bo WU Gui-hua HAN
School of Mechanical & Power Engineering Harbin University of Science and Technology Harbin,Heilongjiang Province,China
国际会议
上海
英文
1591-1596
2009-11-20（万方平台首次上网日期，不代表论文的发表时间）