%0 Journal Article
%T 直驱泵控电液位置伺服系统模糊滑模控制仿真与实验研究<br>Simulation and Experimental study of Fuzzy Sliding Mode Control for Direct Drive Bump-controlled Electro-hydraulic Position Servo System
%A 高岗
%A 郑建明
%A 章小林
%A 李言
%A 肖继明
%A 肖敏
%J 机械科学与技术
%D 2015
%X 针对直驱泵控电液位置伺服系统采用普通滑模控制存在高频抖振现象以及跟踪控制性能欠佳的问题，在普通滑模控制的基础上引入模糊控制量来柔化控制信号，从而削弱滑模切换时产生的剧烈抖振，提高电液位置伺服系统控制精度和稳定性。设计了比例切换模糊滑模控制器，实现了利用模糊控制输出项柔化滑模切换控制。采用滑模控制和模糊滑模控制对单位阶跃响应和余弦跟踪特性进行了仿真与实验研究。结果表明：模糊滑模控制能显著提高直驱泵控系统的动态响应速度和稳态控制精度，增强系统的鲁棒性，削弱普通滑模控制存在的高频抖振现象。<br>Because high-frequency chattering and poor tracking control performance exist in a direct drive bump-controlled electro-hydraulic position servo system when a common sliding mode control is used, we introduce a fuzzy control variable into the common sliding mode control to soften the control signal, thus weakening the severe chattering that arises from the sliding mode switching and improving the control precision and stability of the electro-hydraulic position servo system. The proportional switching fuzzy sliding mode controller is designed based on the above thought and is softened by its output. The simulation and experiments on the unit step response and cosine tracking characteristics have been carried out with the sliding mode control and fuzzy sliding mode control respectively. The results show that the fuzzy sliding mode control can remarkably increase the speed of dynamic response and steady-state control accuracy, enhance the robustness of the direct drive bump-controlled electro-hydraulic position servo system and weaken the high frequency chattering that exists in common sliding mode control
%K 直驱泵控系统
%K 电液位置伺服控制
%K 滑模控制
%K 模糊控制
%K 模糊滑模控制&lt
%K br&gt
%K errors
%K experiments
%K fuzzy control
%K fuzzy sliding mode control
%K high frequency chattering
%K matrix algebra
%K membership functions
%K natural frequencies
%K servomotors
%K sliding mode control
%K switching
%K transfer functions
%U http://journals.nwpu.edu.cn/jxkxyjs/CN/abstract/abstract6152.shtml