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模式转换未知的一类混杂系统的状态估计
引用本文:王文辉,彭昭,周东华.模式转换未知的一类混杂系统的状态估计[J].自动化学报,2005,31(3):451-458.
作者姓名:王文辉  彭昭  周东华
作者单位:1.Department of Automation, Tsinghua University, Beijing 100084
基金项目:国家自然科学基金,国家重点基础研究发展计划(973计划)
摘    要:Since the state of hybrid systems is determined by interacting continuous and discrete dynamics, the state estimation of hybrid systems becomes a challenging problem. It is more complicated when the discrete mode transition information is not available, and the modes of hybrid systems are nonlinear stochastic dynamic systems. To address this problem, this paper proposes a novel hybrid strong tracking filter (HSTF) for state estimation of a class of hybrid nonlinear stochastic systems with unknown mode transition, the method for designing HSTF is presented. The HSTF can estimate the continuous state and discrete mode accurately with unknown mode transition information, and the estimation of hybrid states is robust against the initial state. Simulation results illustrate the effectiveness of the proposed approach.

关 键 词:Hybrid  systems    hybrid  state  estimate    hybrid  strong  tracking  filter
收稿时间:2003-11-25
修稿时间:2004-7-30

State Estimation of a Class of Hybrid Systems in the Presence of Unknown Mode Transitions
WANG Wen-hui,PENG Zhao,ZHOU Dong-hua.State Estimation of a Class of Hybrid Systems in the Presence of Unknown Mode Transitions[J].Acta Automatica Sinica,2005,31(3):451-458.
Authors:WANG Wen-hui  PENG Zhao  ZHOU Dong-hua
Affiliation:1.Department of Automation, Tsinghua University, Beijing 100084
Abstract:Since the state of hybrid systems is determined by interacting continuous and discrete dynamics, the state estimation of hybrid systems becomes a challenging problem. It is more complicated when the discrete mode transition information is not available, and the modes of hybrid systems are nonlinear stochastic dynamic systems. To address this problem, this paper proposes a novel hybrid strong tracking filter (HSTF) for state estimation of a class of hybrid nonlinear stochastic systems with unknown mode transition, the method for designing HSTF is presented. The HSTF can estimate the continuous state and discrete mode accurately with unknown mode transition information, and the estimation of hybrid states is robust against the initial state. Simulation results illustrate the effectiveness of the proposed approach.
Keywords:Hybrid systems  hybrid state estimate  hybrid strong tracking filter
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