具有时变扰动不确定系统的对偶自适应控制  

Dual Adaptive Control of Uncertain System With Timevarying Disturbance

作　　者：郑言海[1] 庄显义[1] 

机构地区：[1]哈尔滨工业大学仿真中心,150001

出　　处：《系统工程与电子技术》2000年第9期28-30,共3页Systems Engineering and Electronics

摘　　要：对一类具有参数不确定性以及时变外部输入扰动的线性系统的控制方法进行了研究 :(1)提出了一种系统参数和扰动的联合辨识实时辨识方法 ,即在不需预先知道扰动模型的情况下 ,同时估计被控对象参数与外部输入扰动 ,并根据辨识结果对输入扰动进行实时补偿 ;(2 )设计了一对偶自适应控制器 ,该控制器具有控制与学习的双重作用 ,能够克服系统参数不确定性影响 ,且防止了传统自适应系统可能有的“关断” ,“终止”和“猝发”等不良现象 ,从而增强了自适应控制系统的鲁棒性。最后通过仿真例子验证了算法的有效性。This paper gives a research about a class of linear system with uncertainty of parameters and external time-varying input disturbance. An united real-time identification method is presented for parameters and disturbance of system, that is, parameters and external disturbance are estimated at the same time without model of disturbance. And the disturbance is compensated online according to the results of identification. A dual adaptive controller is designed. This controller can reject the effect of uncertainty of parameters and eliminates the bad phenomena of conventional adaptive control systems, such as “turn off”, “windup” and “bursting”, so the robustness of adaptive control system is enhanced. At last, the effectiveness is proved by a simulation example.\;

关 键 词：不确定系统 时变扰动 自适应控制 对偶 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]