一类非均匀采样非线性系统的无模型自适应控制  

A Model-Free Adaptive Control Approach of a Class of Non-Uniformly Sampled Nonlinear Systems

作　　者：王宏伟[1] 连捷[1] 夏浩[1] WANG Hong-wei;LIAN Jie;XIA Hao(School of Control Science and Engineering,Dalian University of Technology,Dalian,Liaoning 116024,China)

机构地区：[1]大连理工大学控制科学与工程学院,辽宁大连116024

出　　处：《电子学报》2018年第4期814-818,共5页Acta Electronica Sinica

摘　　要：对一类未知的非均匀采样离散时间非线性非仿射系统,基于在受控系统当前工作点处的等价数据模型,利用输入输出数据对伪雅可比矩阵(PJM)的在线估计,设计出相应的无模型自适应控制器.所提出的控制方法具有如下特点:控制器的设计仅需要非均匀采样的输入输出数据,不包含系统模型的任何信息;控制算法计算量小,算法容易实现.最后,通过一个非均匀采样离散时间非线性系统仿真结果验证提出方法的有效性.For a class of unknown non-uniformly sampled discrete time nonlinear non-affine systems,the corresponding model free adaptive controller is designed by using equivalent data model in the current working point and the non-linear estimation of pseudo Jacobi matrix(PJM)by using input and output data.The proposed control method has the following characteristics:the designed controller requires only the non-uniformly sampled input and output data,and does not contain any information of the system model.The controlalgorithm has small calculation amount,and is easy to achieve.Finally,the effectiveness of the proposed method is verified by the simulation results of a non-uniformly sampled discrete-time nonlinear system.

关 键 词：无模型控制 非均匀采样系统 多采样率 非线性系统 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]