一类不确定非线性系统的自适应模糊滑模控制  

Adaptive fuzzy sliding mode control for a class of uncertain nonlinear systems

作　　者：年漪蓓[1] 高国琴[2] 

机构地区：[1]扬州大学 信息工程学院,江苏扬州225009 [2]江苏大学 电气信息工程学院,江苏镇江212013

出　　处：《电机与控制学报》2005年第5期512-515,共4页Electric Machines and Control

基　　金：江苏省教育厅基金资助(FK0310061;03KJD510072)

摘　　要：针对一类不确定非线性系统自适应模糊控制中,为了保证系统稳定性而附加监督控制问题,根据滑模控制原理并利用模糊系统的逼近能力,提出了一种Ⅰ型间接自适应模糊滑模控制方法。该方法取消了监督控制,用滑模控制器增加了逼近误差的自适应补偿,李雅普诺夫稳定性理论分析证明,控制系统全局稳定且跟踪误差收敛到零。将这种控制器应用到过程控制的典型对象液位控制中,仿真结果表明了该控制器的有效性和可行性。Aiming at supervisory control which is appended to guarantee the stability of adaptive fuzzy control for a class of uncertain nonlinear systems, a first - type indirect adaptive fuzzy sliding mode control method is proposed according to principles of sliding mode control and the approximation capability of fuzzy systems. The supervisory control is cancelled in this method and the sliding mode control is used to compensate the adaptive approach error. Analysis in Lyapunov stability theory proves the global stability of control system with tracking error converging to zero. Then the proposed controller is applied to the typical plant of process control, the level control of two cascaded tanks. The simulation results demonstrate the effectiveness and feasibility of this approach.

关 键 词：不确定非线性系统 Ⅰ型间接自适应模糊控制 滑模控制 稳定性 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]