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应用科学学报 ›› 2005, Vol. 23 ›› Issue (2): 111-116.

• 论文 •    下一篇

离散测量事件在混合系统状态估计中的应用

莫以为, 萧德云   

  1. 清华大学自动化系, 北京 100084
  • 收稿日期:2004-01-06 修回日期:2004-04-27 出版日期:2005-03-31 发布日期:2005-03-31
  • 作者简介:莫以为(1966-),男,广西凭祥人,博士生,E-mail:moyw@263.net;萧德云(1945-),男,福建仙游人,教授,博导,E-mail:xiaody@mail.tsinghua.edu.cn
  • 基金资助:
    国家高技术研究发展计划(863计划)资助项目(2002AA412510,2002AA412420)

The Application of Discrete Measurement Event in Hybrid System State Estimation

MO Yi-wei, XIAO De-yun   

  1. Automation Department, Tsinghua University, Beijing 100084, China
  • Received:2004-01-06 Revised:2004-04-27 Online:2005-03-31 Published:2005-03-31

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摘要： 通过定义离散测量事件,从量化定性测量信号中提取出定量信息,并与连续测量信号一起应用到混合系统状态估计中,以改善状态估计的结果,获得更好的估计性能.讨论了由离散测量事件提取的信息在混合系统状态估计中的应用方案,并给出了设计步骤与实现方法.仿真实验证实,利用离散测量事件修正状态估计结果的方法是有效的,可以提高状态估计的速度与精度.

关键词: 混合系统, 离散测量事件, 状态估计, 线性矩阵不等式

Abstract: By defining the discrete measurement event (DME), extra quantitative values can be extracted from quantized qualitative measurement signals.Together with continuous quantitative signals, this quantitative information acquired from quantized qualitative signals is used in hybrid state estimation to improve state estimation results and acquire better estimation performance.The application scheme of these extra quantitative values in hybrid state estimation is discussed in this paper.Moreover, its design steps and the method of implementation are given.The feasibility of the proposed state estimation approach based on DMEs is validated by simulation experiments.Simulation results show that DME can improve the speed and precision of state estimation in hybrid system.

Key words: state estimation, hybrid system, discrete measurement event, LMI

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