Design of event-triggered state estimator with unknown input in wireless sensor networks

Cheng-han XIE; Sai-jie LU; Yun-ji LI; Li PENG

doi:10.11959/j.issn.1000-436x.2017254

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Design of event-triggered state estimator with unknown input in wireless sensor networks

Papers | 更新时间：2024-06-05

- Design of event-triggered state estimator with unknown input in wireless sensor networks
- Journal on Communications Vol. 38, Issue Z1, Pages: 200-206(2017)
- 作者机构：
  
  河南大学物联网应用技术教育部工程中心，江苏无锡214122
- 作者简介：
- 基金信息：
  
  The National Natural Science Foundation of China(61374047)
- DOI：10.11959/j.issn.1000-436x.2017254
  CLC： TP13
- Online First：2017-10，
  
  Published：25 October 2017
- 稿件说明：
移动端阅览
Cheng-han XIE, Sai-jie LU, Yun-ji LI, et al. Design of event-triggered state estimator with unknown input in wireless sensor networks[J]. Journal on Communications, 2017, 38(Z1): 200-206.
DOI：

Cheng-han XIE, Sai-jie LU, Yun-ji LI, et al. Design of event-triggered state estimator with unknown input in wireless sensor networks[J]. Journal on Communications, 2017, 38(Z1): 200-206. DOI： 10.11959/j.issn.1000-436x.2017254.

摘要

近年来，随着传感器和无线网络技术的发展，基于无线传感器的新型网络化应用也应运而生。然而，无线传感器耗能过多成为制约其发展的瓶颈。因此，研究其节点数据传输节能问题有着巨大的实际意义，针对一种含未知输入的离散随机系统，结合事件驱动机制设计估计器以实现远程状态估计。相应的远程估计器满足了无偏和最小方差特性，随后，基于所提出的事件驱动策略判定何时发送数据，从而减少数据传输。此外，通过推导一类系统性能指标的上界详细推导了时间驱动策略的形式和参数，最后，通过数据仿真实验来验证所提方法的可行性和有效性。

Abstract

With the development of sensors and wireless network technology

a series of new applications based on the wireless sensor has been merged in the past decades.Too much energy consumption and over-abundant occupancy rates of bandwidth are great challenges in these new applications

thus

it is of great practical significance to study the energy saving of the data transmission among these nodes.An estimator with the corresponding event-triggered transmission scheme was investigated for a class of discrete-time stochastic systems subject to unknown input.Its features satisfied the characteristic of unbiased and minimum variance was designed and then the proposed event-triggered strategy

which decided the transfer time of the data packet

can be used to reduce the number of data transmission.Furthermore

an upper bound of system performance was derived for obtaining the parameters of event scheme in details.Finally

a numerical example was given to verify the potential and effectiveness of the proposed theoretical result.

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references

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