| Optimal distributed resource allocation in a wireless sensor network for control systems |
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| 作者姓名： | MAO Jian-lin WU Zhi-ming |
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| 作者单位： | MAO Jian-lin1，2，WU Zhi-ming1 (1Department of Automation，Shanghai Jiao Tong University，Shanghai 200240，China) (2School of Information Engineering and Automation，Kunming University of Science and Technology，Kunming 650093，China) |
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| 基金项目： | Project (Nos. 60074011 and 60574049) supported by the National Natural Science Foundation of China |
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| 摘 要： | INTRODUCTION With the rapid development of wireless com-munication technology, the combination of wireless communication and control systems becomes a new trend of networked control systems. Among the kinds of wireless technologies, wireless sensor network (WSN) has attracted a lot of interest and visibility due to its huge application space. WSN is a kind of wire-less ad-hoc network which connects embedded sen-sors, actuators, and processors and in which each node consists of a wireles…
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| 关 键 词： | 无线传感器网 分布式资源分配 控制系统 优化 信道容量约束 |
| 收稿时间： | 2006-06-08 |
| 修稿时间： | 2006-07-21 |
Optimal distributed resource allocation in a wireless sensor network for control systems |
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| MAO Jian-lin WU Zhi-ming.Optimal distributed resource allocation in a wireless sensor network for control systems[J].Journal of Zhejiang University Science,2007,8(1):106-112. |
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| Authors: | Jian-lin Mao Zhi-ming Wu |
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| Institution: | (1) Department of Automation, Shanghai Jiao Tong University, Shanghai, 200240, China;(2) School of Information Engineering and Automation, Kunming University of Science and Technology, Kunming, 650093, China |
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| Abstract: | Wireless technology is applied increasingly in networked control systems. A new form of wireless network called wireless sensor network can bring control systems some advantages, such as flexibility and feasibility of network deployment at low costs, while it also raises some new challenges. First, the communication resources shared by all the control loops are limited. Second, the wireless and multi-hop character of sensor network makes the resources scheduling more difficult. Thus, how to effectively allocate the limited communication resources for those control loops is an important problem. In this paper, this problem is formulated as an optimal sampling frequency assignment problem, where the objective function is to maximize the utility of control systems, subject to channel capacity constraints. Then an iterative distributed algorithm based on local buffer information is proposed. Finally, the simulation results show that the proposed algorithm can effectively allocate the limited communication resource in a distributed way. It can achieve the optimal quality of the control system and adapt to the network load changes. |
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| Keywords: | Wireless sensor networks (WSN) Distributed resource allocation Control systems Optimization |
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