期刊
IEEE TRANSACTIONS ON AUTOMATIC CONTROL
卷 64, 期 12, 页码 5265-5272出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAC.2019.2929295
关键词
Observers; Sampled data systems; Measurement errors; Stability analysis; Sensors; Nonlinear systems; Time measurement; Asynchronous sampling; input-to-output stability (IOS); multirate observers; nonlinear sampled-data systems; vector small-gain theorem
资金
- National Science Foundation [CBET-1706201]
A multirate sampled-data observer for nonlinear systems under asynchronous sampling is developed in this paper. The proposed multirate observer is based on a continuous-time design coupled with intersample output predictors for the sampled measurements. The sampled-data system with the multirate observer forms a hybrid system and it is shown that the error dynamics of the overall system is input-to-output stable with respect to measurement errors, by applying the Karafyllis-Jiang vector small-gain theorem. This sampled-data design also offers robustness with respect to perturbations in the sampling schedule. The proposed method is evaluated through linear systems and a nonlinear batch reactor example.
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