离散测量事件在混合系统状态估计中的应用  

The Application of Discrete Measurement Event in Hybrid System State Estimation

作　　者：莫以为[1] 萧德云[1] 

机构地区：[1]清华大学自动化系,北京100084

出　　处：《应用科学学报》2005年第2期111-116,共6页Journal of Applied Sciences

基　　金：国家高技术研究发展计划(863计划)资助项目(2002AA412510;2002AA412420)

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.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.

关 键 词：状态估计 离散测量 混合系统 测量信号 应用方案 事件提取 估计性能 设计步骤 信息 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术] TM744[自动化与计算机技术—计算机科学与技术]