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基于有限存储空间的分布式传感器融合估计器

韩旭 王元鑫 程显超 王小飞

韩旭,王元鑫,程显超,等. 基于有限存储空间的分布式传感器融合估计器[J]. 北京航空航天大学学报,2023,49(2):335-343 doi: 10.13700/j.bh.1001-5965.2021.0240
引用本文: 韩旭,王元鑫,程显超,等. 基于有限存储空间的分布式传感器融合估计器[J]. 北京航空航天大学学报,2023,49(2):335-343 doi: 10.13700/j.bh.1001-5965.2021.0240
HAN X,WANG Y X,CHENG X C,et al. A decentralized multi-sensor fusion estimator using finite memory buffers[J]. Journal of Beijing University of Aeronautics and Astronautics,2023,49(2):335-343 (in Chinese) doi: 10.13700/j.bh.1001-5965.2021.0240
Citation: HAN X,WANG Y X,CHENG X C,et al. A decentralized multi-sensor fusion estimator using finite memory buffers[J]. Journal of Beijing University of Aeronautics and Astronautics,2023,49(2):335-343 (in Chinese) doi: 10.13700/j.bh.1001-5965.2021.0240

基于有限存储空间的分布式传感器融合估计器

doi: 10.13700/j.bh.1001-5965.2021.0240
基金项目: 国家自然科学基金(61473306)
详细信息
    通讯作者:

    E-mail:wyx13@163.com

  • 中图分类号: TJ765.2

A decentralized multi-sensor fusion estimator using finite memory buffers

Funds: National Natural Science Foundation of China (61473306)
More Information
  • 摘要:

    研究具有信息传输模型不确定性、随机时间延迟和数据丢包的网络化多传感器分布式融合估计问题。模型的不确定性刻画为系统矩阵中的非高斯非白噪声干扰,在远程处理中心处设置有限长度的存储空间用来存储各个传感器延迟到达的测量值。在最小方差原则下设计了一种利用测量值到达变量的最优常增益局部估计器,利用协方差交叉加权方法得到最优分布式融合估计器并推导得到使得估计器有界的条件。最后,通过某电源系统计算实例仿真验证所提融合估计器的有效性。

     

  • 图 1  网络化分布式多传感器融合估计系统架构

    Figure 1.  Architecture of networked distributed multi-sensor fusion estimation system

    图 2  无限长度存储空间存储过程

    Figure 2.  Stored procedure of space with unlimited length

    图 3  有限长度存储空间存储过程

    Figure 3.  Stored procedure of space with limited length

    图 4  估计值跟踪系统真值情况

    Figure 4.  True value of tracking system of estimated value

    图 5  估计误差均方差对比

    Figure 5.  Comparison of estimated error variances

    图 6  乘性噪声${g_k}$与融合估计误差的关系

    Figure 6.  Relationship between multiplicative noise ${g_k}$ and fusion estimation error

    图 7  乘性噪声${g_k}$特性与融合估计器有界性的关系

    Figure 7.  Relationship between characteristics of multiplicative noise ${g_k}$ and fusion estimator boundedness

    图 8  M取1,2,3,4,5时存储空间长度与融合估计精度的关系

    Figure 8.  Relationship between storage space length and fusion estimation accuracy when M=1,2,3,4,5

    图 9  M取5,6时存储空间长度与融合估计精度的关系

    Figure 9.  Relationship between storage space length and fusion estimation accuracy when M=5,6

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出版历程
  • 收稿日期:  2021-05-08
  • 录用日期:  2022-01-21
  • 网络出版日期:  2022-05-18
  • 整期出版日期:  2023-02-28

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