电子学报 ›› 2012, Vol. 40 ›› Issue (10): 1958-1964.DOI: 10.3969/j.issn.0372-2112.2012.10.009

• 学术论文 • 上一篇    下一篇

未建模系统基于观测值的实时分块Kalman滤波估计方法研究

文韬1, 葛泉波2   

  1. 1. 杭州电子科技大学计算机学院, 浙江杭州 310018;
    2. 杭州电子科技大学自动化学院系统科学与控制工程研究所, 浙江杭州 310018
  • 收稿日期:2011-06-08 修回日期:2012-01-17 出版日期:2012-10-25 发布日期:2012-10-25
  • 作者简介:文 韬 男,1988年生于河南开封,河南大学计算机与信息工程学院研究生.感兴趣的研究方向为:多源信息融合及信号处理. E-mail:wents@hdu.edu.cn 葛泉波 男,1980年生于浙江金华,博士(后),副教授,IEEE会员.主要从事信息融合、故障诊断、般舶自动化等研究.
  • 基金资助:
    国家自然科学基金(No.61172133)

Research on Real-Time Block Kalman Filtering Estimation Methods for the Un-modeled System Based on Output Measurements

WEN Tao1, GE Quan-bo2   

  1. 1. School of Computer and Technology, Hangzhou Dianzi University, Hangzhou, Zhejiang 310018, China;
    2. Institute of System Science and Control Engineering, School of Automation, Hangzhou Dianzi University, Hangzhou, Zhejiang 310018, China
  • Received:2011-06-08 Revised:2012-01-17 Online:2012-10-25 Published:2012-10-25

摘要: 本文以一类具有周期随机变化特点的随机过程为对象,在仅有测量模型的情况下研究估计方法的设计问题.首先,通过离散化方法建立点采样的离散输出方程、分块形式的输出方程以及描述点采样与被估状态块向量之间关系的输出方程;其次,利用待估变量具有的周期性随机游走特性,建立对应的状态模型;再者,利用扩展强跟踪滤波算法,分别得到了实时点估计滤波器、半实时块估计滤波器和实时块估计滤波器等三种未建模系统随机变量基于输出测量值的估计方法;最后,利用计算机仿真对三种滤波器的性能进行了比较分析.

关键词: Kalman滤波, 随机游走, 输出测量值, 块估计, 强跟踪滤波

Abstract: Aiming at the random process with periodic changing characteristic,A new estimation method under the case having only measurement model is proposed in this paper.Firstly,the discrete output equation,output equation with blocking form,and output equation between point sample and the block vector of estimated state are taken.Secondly,by using the periodic random walk characteristic of estimated variable,the state models are established.Thirdly,based on strong tracking filter algorithm,three estimation methods such as real time point filter,semi-real time block filter,and real time block filter are proposed for the un-modeled random variable system with only output measurement.Finally,computer simulation is demonstrated to compare the performances of three proposed filters.

Key words: Kalman filtering, random walk, output measurements, block estimation, strong tracking filter