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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

第12卷    第5期    总第68期    2015年10月

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文章编号:1672-7029(2015)05-1205-07
基于观测器的列车网络控制
王军1, 2,夏利民2

(1.电子科技大学中山学院,广东中山 528402;2.中南大学信息科学与工程学院,湖南长沙 410075)

摘 要: 列车网络控制是列车安全行驶的保障。提出一种新的基于观测器的列车网络控制方法,同时考虑测量通道和控制通道的网络诱导延时的影响,利用增广状态向量法构建基于观测器的列车网络控制系统模型;在考虑网络诱导延时与其时滞上界关系基础上,构造Lyapunov泛函,导出使扩展闭环系统渐近稳定的时滞相关LMI充分条件;给出求解控制器和观测器增益矩阵的方法. 最后,通过数值仿真算例验证了该方法的有效性和可行性。

 

关键字: 列车网络控制; 观测器; 时滞相关; Lyapunov泛函

Trainnetworked control based on observer
WANG Jun1, 2, XIA Limin2

1. Zhongshan Institute, University of Electronics Science and Technology of China, Zhongshan 528402, China;
2. School of Information Science and Engineering, Central South University, Changsha 410075, China

Abstract:In this paper, the new method for train network control was proposed. First, the observer-based train networked control system was modeled as a multiple delay system by the augmented state vector method, in which the network-induced delays in measurement and control channels are taken into account simultaneously. Then, by taking the relationship between the networked-induced delays and their upper bounds into full consideration, constructing a proper Lyapunov functional candidate and applying the integral inequality approach and the linear matrix inequality method, an improved delay-dependent LMI sufficient condition of asymptotical stability for augmented closed-loop system was developed. In addition, the algorithm to calculate the controller and observer gain matrices was presented. Finally, numerical example was provided to demonstrate the feasibility and effectiveness of the proposed method.

 

Key words: train networked control; observer; delay-dependent; Lyapunov function

ISSN 1672-7029
CN 43-1423/U

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