收稿日期: 2011-09-06
修回日期: 2011-09-29
网络出版日期: 2012-09-25
Flow Control of Optimum Second Order Approximation Modulus with Improved Differentiation Element in Sensor Networks
Received date: 2011-09-06
Revised date: 2011-09-29
Online published: 2012-09-25
倪晓， 石为人， 黄勤 . 传感器网络微分环节中改进的最佳二阶近似模流量控制[J]. 应用科学学报, 2012 , 30(5) : 473 -478 . DOI: 10.3969/j.issn.0255-8297.2012.05.006
Because self-organized wireless sensor network is randomly setup, data transmission among the nodes is subject to traffic jam. To address this problem, this paper proposes a method of optimum second order approximation modulus with an improved differentiation element to control data transmission. The controller applies a function of the optimum second order approximation modulus as its transfer function. It negatively
feedbacks the data buffer length in a node to its input point, and controls the speed of data transmission of the up-stream node. A differential element is added to the transfer function to reduce over-modulation and speed the peak emergence. Thus no traffic overflow will occur both in transition and in permanent periods.
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