膨胀节成型机模糊自适应趋近律滑模控制研究  

Research on adaptive fuzzy sliding mode control by reaching law for expansion joint forming machine

作　　者：柳波[1] 王浩[1] 高宇[1] 黄杰 

机构地区：[1]中南大学机电工程学院,湖南长沙410083 [2]长沙中联重科起重机分公司工程技术部,湖南长沙410131

出　　处：《合肥工业大学学报（自然科学版）》2012年第4期463-466,共4页Journal of Hefei University of Technology：Natural Science

摘　　要：文章针对膨胀节成型机电液比例位置控制系统容易受系统参数不精确和外界干扰影响,导致控制精度降低甚至系统抖振的缺点,引入了一种模糊自适应趋近律滑模控制方法。采用指数趋近律形式的切换函数设计滑模控制器,并使用模糊逻辑规则自适应调整ε的大小,使系统参数动态最优化。仿真结果表明,该方法有效抑制抖振,保证了系统的控制精度,同时响应速度较快,有效提高了膨胀节成型精度。The electro-hydraulic proportional control system of the expansion joint forming machine is easily affected by inaccurate system parameters and other external factors, which causes the lowering of control accuracy and the systematical chattering. To solve this problem, an adaptive fuzzy sliding mode control method by reaching law is proposed. The sliding mode controller is designed by the switching function in the form of index reaching law. The ~ is adjusted adaptively by using fuzzy logic rules, which makes the system parameters dynamically optimal. Simulation results show that the method can suppress the chattering effectively and ensure the control accuracy and the response speed, which improves the quality of the expansion joint forming machine.

关 键 词：膨胀节成型 位置控制 模糊滑模控制 电液比例控制 指数趋近律 

分 类 号：TP273.4[自动化与计算机技术—检测技术与自动化装置]