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摘要: 研究当子系统之间信息传输存在随机丢包时空间关联系统的分析和设计问题. 通过引入空间移动算子和时间前向移动算子, 将关联系统建模为具有Markovian跳变参数的关于离散时间和空间变量的多维线性系统, 其中以Markovian跳变参数反映通信信道的状态, 得到整个关联系统在某一给定丢包率下适定且均方稳定的解析条件. 提出一种分布式动态输出反馈控制器的设计方法, 该控制器和被控对象具有相同的空间关联结构, 并基于线性矩阵不等式方法求解. 最后通过一个具有通信丢包影响的多机编队控制系统实例进一步阐明该模型及方法的正确性和有效性.
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关键词:
- 空间关联系统 /
- 通信丢包 /
- Markovian跳变线性系统 /
- 线性矩阵不等式
Abstract: This paper deals with analysis and synthesis problems of spatially interconnected systems where communicated information may get lost between subsystems. Spatial shift operator and temporal forward shift operator are introduced to model the interconnected systems as discrete time-space multidimensional linear systems with Markovian jumping parameters which reflect the state of communication channels. To ensure the whole system's well-posedness and mean square stability for a given packet loss rate, a condition is derived through analysis. Then a procedure of designing distributed dynamic output feedback controllers is proposed. The controllers have the same structure as the plants and are solved within the linear matrix inequality (LMI) framework. Finally, we apply these results to study the effect of communication losses on the multiple vehicle platoon control system, which further illustrates the effectiveness of the proposed model and method.
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