网络化控制系统的新型事件触发通信与鲁棒广义H_2/H_∞容错协同设计  

The Co-design Between New Event-Triggered Communication Scheme and Networked Control System Robust Generalized H_2/H_∞ Fault-Tolerant Control

作　　者：李炜[1] 翟鹏飞[1] 申富媛[1] 

机构地区：[1]兰州理工大学电气工程与信息工程学院,兰州730050

出　　处：《上海应用技术学院学报（自然科学版）》2016年第1期47-54,共8页Journal of Shanghai Institute of Technology: Natural Science

摘　　要：针对网络化控制系统(NCS)单纯依赖网络固有资源进行容错控制孤立设计方法的局限性,在分析现有离散事件触发通信机制不足的基础上,提出一种具有动稳过程共同约束的离散事件触发通信机制,并在该通信机制下建立与状态误差相关的闭环故障NCS模型;考虑参数不确定性和外界有限能量扰动的影响,基于Lyapunov稳定性理论与相关技术,给出网络通信触发权矩阵与广义H_2/H_∞指标约束下的满意容错控制器优化求解方法.通过仿真算例,验证新型离散事件触发通信机制的确能在不过分削弱系统性能的前提下,更多地节约网络通信资源,触发参数的选择也与系统性能有对应关系,为工程中选取相关参数提供便利.Based on the analysis for the disadvantage of the current discrete event-triggered communication scheme,a new kind of event-triggered communication scheme constrained by transient and steady-state process was proposed to solve the issue that design the fault-tolerant controller for the networked control system（NCS）in isolation.Firstly,a closed-loop failure model concerning state-error was established for NCS.Then,considering parameter uncertainties and the influence of external disturbance with limited energy,the optimal solution of the generalized H2/H∞fault-tolerant controller and the event-triggered matrix was proposed based on Lyapunov stability theory and some related technology.Finally,the simulation results showed that the new discrete event-triggered communication scheme proposed could save more network communication resource without deteriorating the system performance excessively,and meanwhile,make it convenient for selecting parameters in the project due to the relationship between system performance and event-triggered parameters.

关 键 词：网络化控制系统 离散事件触发通信机制 广义H2/H∞ 协同设计 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]