Remote Nonlinear State Estimation With Stochastic Event-Triggered Sensor Schedule
Remote Nonlinear State Estimation With Stochastic Event-Triggered Sensor Schedule
复制标题
使用随机事件触发传感器调度的远程非线性状态估计
DOI:
10.1109/tcyb.2017.2776976
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发表时间:
2019-03
影响因子:
11.8
通讯作者:
Yang Hongjiu
中科院分区:
文献类型:
--
作者:
Li Li;Yu Dongdong;Xia Yuanqing;Yang Hongjiu
This paper concentrates on the remote state estimation problem for nonlinear systems over a communication-limited wireless sensor network. Because of the non-Gaussian property caused by nonlinear transformation, the unscented transformation technique is exploited to obtain approximate Gaussian probability distributions of state and measurement. To reduce excessive data transmission, uncontrollable and controllable stochastic event-triggered scheduling schemes are developed to decide whether the current measurement should be transmitted. Compared with some existing deterministic event-triggered scheduling schemes, the newly developed ones possess a potential superiority in maintaining Gaussian property of innovation process. Under the proposed schemes, two nonlinear state estimators are designed based on the unscented Kalman filter. Stability and convergence conditions of these two estimators are established by analyzing behaviors of estimation error and error covariance. It is shown that an expected compromise between communication rate and estimation quality can be achieved by properly tuning event-triggered parameter matrix. Numerical examples are provided to testify the validity of the proposed results.
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影响因子:
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DOI:
10.1016/j.ins.2014.08.047
发表时间:
2015-01
期刊:
Inf. Sci.
影响因子:
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通讯作者:
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