事件触发稀疏数据传输下NNCS的满意容错控制  

Satisfactory Fault-tolerant Control of NNCS under Event-triggered Sparse Data Transmission

作　　者：李亚洁[1,2] 李炜 LiYajie;Li Wei(College of Electrical and Information Engineering, Lanzhou University of Technology, Lanzhou 730050, China;Automation Institute of Lanzhou Petrochemical of Petro China, Lanzhou 730060, China)

机构地区：[1]兰州理工大学电气工程与信息工程学院,甘肃兰州730050 [2]中国石油兰州石化自动化研究院,甘肃兰州730060

出　　处：《系统仿真学报》2018年第4期1581-1592,1600,共13页Journal of System Simulation

基　　金：国家自然科学基金(61364011;61463030)

摘　　要：基于离散事件触发通讯机制,研究了在稀疏数据传输情形下非线性网络化控制系统(Nonlinear Networked Control System,NNCS)的满意容错控制问题。基于事件触发稀疏数据传输背景建立了带执行器饱和约束的闭环故障系统模型;利用提出的安全度定义和Lyapunov稳定性理论,推证出使NNCS具有广义H_∞/H_2性能和α-安全度的容错收缩不变集充分条件和相应的协同设计方法;通过仿真算例验证了理论方法在协同设计方面的可行性和节约网络资源方面的有效性,并提出了实际应用中应遵循的折中类定性原则。Adopting the discrete event-triggered communication scheme （DETCS）, the satisfactory fault-tolerant control of nonlinear networked control system （NNCS） under the sparse data transmission circumstance was studied. Based on the background of event-triggered sparse data transmission, a closed-loop model with actuator failure and actuator saturation was established. Based on Lyapunov-Krasovskii function and the safety degree definition proposed in this paper, a sufficient condition was presented for NNCS with the generalized HJH2 performance under the case of actuator saturation and actuator failure, which was the contractively invariant set of fault-tolerance with a-safety degree, and the corresponding co-design method was also given. A simulation example verifies the feasibility of the co-design method and the effectiveness of saving network resource. Some related qualitative principles of compromise balance are summarized for the design of practical system.

关 键 词：容错控制 离散事件触发通讯机制 稀疏数据传输 非线性网络化控制系统 执行器饱和 协同设计和相容性分析 

分 类 号：TP302.8[自动化与计算机技术—计算机系统结构]