执行器受限下离散网络控制系统容错控制  

Fault Tolerant Control for Discrete Networked Control Systems with Actuator Constraints

作　　者：张跞 刘冠邦[1] 徐川川 李荣 熊师洵 ZHANG Luo;LIU GuanBang;XU Chuanchuan;LI Rong;XIONG Shixun(28th Research Institute of China Electronics Technology Group Corporation,Nanjing 210023,China;College of Electrical and Power Engineering,Taiyuan 030000,China;College of Internet of Things,Nanjing University of Posts and Telecommunications,Nanjing 210003,China)

机构地区：[1]中国电子科技集团第二十八研究所,南京210023 [2]太原理工大学电气与动力工程学院,太原030000 [3]南京邮电大学物联网学院,南京210003

出　　处：《计算机测量与控制》2023年第4期110-116,155,共8页Computer Measurement &Control

基　　金：国家自然科学基金(62003233);山西省应用基础研究计划(201901D211083);南京邮电大学引进人才自然科学研究启动基金(NY221134)。

摘　　要：随着自动控制、计算机科学以及通讯技术等飞速发展,近十年来网络控制系统(NCSs)已经在工业控制、航空航天以及物联网等领域得到广泛的应用;由于实际中的离散网络控制系统多具有执行器饱和与故障的情况,同时存在网络诱导时延和参数不确定等影响,因此针对存在执行器饱和与故障情况的离散网络控制系统,如何设计控制器使得系统稳定是一个难题;针对存在执行器饱和与故障、网络诱导时延以及系统不确定的离散网络控制系统,提出了一种容错控制器设计方法,将被控系统转化为一类存在扇形有界不确定性和非线性项的闭环控制系统,利用Lyapunov稳定性理论和时延上界信息进行泛函构造并利用Jenson不等式放大技术估计泛函差分更紧上界,得到确保闭环系统渐近稳定的充分性条件,再基于线性矩阵不等式(LMI)技术得到控制器增益设计,最后利用对比仿真验证了方法是有效的且具有更小的保守性。With the rapid developments of automation control,computer science,and communication technology,networked control systems(NCSs)have been widely applied in many fields such as industrial control,aeronautics and astronautics,and Internet of things in recent ten years.In practical systems,actuator saturation and faults usually exist in discrete NCSs,it is a difficult problem to design a controller to make the NCSs stable.Aimed at the characteristics of actuator saturation fault,network-induced delay and parameter uncertainty in discrete NCSs,a fault tolerant controller design method is proposed,the NCSs are transformed into a class of closed loop control system with bounded uncertainties and nonlinear terms,a kind of functional is constructed by using Lyapunov stability theory and the information of delay upper bound,and the tighter upper bound of functional difference is estimated by utilizing Jenson inequality technique,the sufficient conditions for asymptotic stability of the closed-loop system are obtained,and controller gain can be solved on the basis of linear matrix inequality(LMI)technology;Finally,the comparative simulations show the proposed method has the effectiveness and less conservativeness.

关 键 词：网络控制系统 执行器饱和 网络诱导时延 容错控制 线性矩阵不等式 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]