互联系统的分散式故障检测与状态反馈控制  

Decentralized Fault Detection and State Feedback Control for Interconnected Systems

作　　者：周顺 邹洪波[1] 吴锋[1] ZHOU Shun;ZOU Hong-bo;WU Feng(School of Automation,Hangzhou Dianzi University,Hangzhou 310016,China)

机构地区：[1]杭州电子科技大学自动化学院,浙江杭州310016

出　　处：《控制工程》2022年第4期637-644,共8页Control Engineering of China

摘　　要：由于互联系统内部各模块之间相互联系,因此系统各模块发生故障后容易传播故障。针对非线性互联闭环系统,提出了一种分散式故障检测与状态反馈控制方案。与传统的子系统通信协议相比,假定当只有两个子系统的实际状态与期望状态的误差都超过设定阈值时才发生通信;否则,互联函数采用具有互联关系的子系统的期望状态,有效地隔离了故障的传播。当系统检测到故障后,对子系统的状态进行线性变换,得到分散式状态反馈控制率。将该控制率作用于系统时,系统的状态能够收敛到原点附近的邻域内。最后,通过仿真程序对所提方案进行了验证。Because the modules in the interconnected system are connected with each other,it is easy to spread faults when faults occur in the modules.In this paper,a scheme of decentralized fault detection and state feedback control is proposed for nonlinear interconnected closed-loop systems.Compared with the traditional subsystem communication protocol,it is assumed that communication occurs only when the error between the actual state and the expected state of the two subsystems exceeds the set threshold.Otherwise,the interconnection function takes the expected state of the subsystems with interconnection relationship,which effectively isolates the propagation of faults.When the system detects a fault,the state of the subsystem is linearly transformed to obtain the decentralized state feedback control rate.When the control rate is applied to the system,the state of the system can converge to the neighborhood near the origin.Finally,the proposed scheme is verified by a simulation program.

关 键 词：非线性互联系统 分散式 故障检测 状态反馈控制 通信协议 

分 类 号：D510.801.0[政治法律—政治学]