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带丢包Markov切换线性系统的状态估计问题研究 被引量:2
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作者 周卫东 刘萌萌 《电子学报》 EI CAS CSCD 北大核心 2016年第3期646-652,共7页
针对一类带丢包的Markov切换系统,提出一种含有双Markov切换参数的交互式多模型算法.该算法利用一个二态的Markov链对系统是否丢包进行建模,得到双Markov链系统,通过定义乘积集将两个Markov切换参数所对应的模型集进行融合,并给出单个... 针对一类带丢包的Markov切换系统,提出一种含有双Markov切换参数的交互式多模型算法.该算法利用一个二态的Markov链对系统是否丢包进行建模,得到双Markov链系统,通过定义乘积集将两个Markov切换参数所对应的模型集进行融合,并给出单个模型集中各模型与乘积集中各模型的对应关系.在此基础上,以交互式多模型算法为框架,采用分层的方法,并利用一种新的最优估计算法对双Markov链系统进行滤波.仿真实验证明了该算法的有效性. 展开更多
关键词 Markov系统 量测丢包 双Markov链 最优滤波估计 交互式多模型算法
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工业物联网中的精确时钟同步:网络化控制理论观点 被引量:4
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作者 王頲 徐小权 +2 位作者 唐晓铭 黄庆卿 李永福 《自动化学报》 EI CAS CSCD 北大核心 2021年第7期1720-1738,共19页
本文针对物联网中时变的时钟参数,运用网络化控制理论观点,通过对时钟状态建模的本质分析,区别于"相对时钟建模",提出了全分布规模化时钟状态追踪卡尔曼滤波(Kalman filtering).考虑量测的丢失,则扩展为追踪时钟参数的修正Kal... 本文针对物联网中时变的时钟参数,运用网络化控制理论观点,通过对时钟状态建模的本质分析,区别于"相对时钟建模",提出了全分布规模化时钟状态追踪卡尔曼滤波(Kalman filtering).考虑量测的丢失,则扩展为追踪时钟参数的修正Kalman filtering算法.我们提出了以BMU(Basic measurement unit)构建新的MMSE(Minimum mean square error)等价变换下的能观测性状态解耦量测模型,新的量测模型能够实现MMSE量测规模化扩展,且理论上分析了时钟同步的条件和计算了统计时钟同步误差的相应上界,并且在时钟同步精度与潜在的通信网络质量间作出了量化均衡. 展开更多
关键词 工业物联网 精确时钟同步 卡尔曼滤波 量测丢包
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Data-Based Predictive Control for Networked Nonlinear Systems with Packet Dropout and Measurement Noise 被引量:12
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作者 PANG Zhonghua LIU Guoping +1 位作者 ZHOU Donghua SUN Dehui 《Journal of Systems Science & Complexity》 SCIE EI CSCD 2017年第5期1072-1083,共12页
In this paper, the data-based control problem is investigated for a class of networked nonlinear systems with measurement noise as well as packet dropouts in the feedback and forward channels. The measurement noise an... In this paper, the data-based control problem is investigated for a class of networked nonlinear systems with measurement noise as well as packet dropouts in the feedback and forward channels. The measurement noise and the number of consecutive packet dropouts in both channels are assumed to be random but bounded. A data-based networked predictive control method is proposed, in which a sequence of control increment predictions are calculated in the controller based on the measured output error, and based on the control increment predictions received by the actuator, a proper control action is obtained and applied to the plant according to the real-time number of consecutive packet dropouts at each sampling instant. Then the stability analysis is performed for the networked closedloop system. Finally, the effectiveness of the proposed method is illustrated by a numerical example. 展开更多
关键词 Data-based control measurement noise networked control systems (NCSs) packet dropout predictive control
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