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Data-Driven Internal Model Learning Control for Nonlinear Systems
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DOI：10.1109/TNNLS.2023.3331367.png)
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摘要
En 中文
A novel data-driven internal model learning control (DIMLC) strategy is developed for a nonlinear nonaffine system subject to unknown nonrepetitive uncertainties. At first, an iterative dynamic linearization (IDL) approach is employed for reformulating the nonlinear plant to an iterative linear data model (iLDM). Then, the nominal form of the IDL-based iLDM is used as an internal model of the nonlinear plant whose parameters are estimated by an iterative adaptive updating mechanism using only input-output (I/O) data. The equivalent feedback-principle-based internal model inversion is further applied to the subsequent controller design and analysis. The proposed DIMLC contains two parts. One is a nominal controller designed by the inversion of the internal model which achieves a perfect tracking of the target output; the other is a compensatory controller which offsets the uncertainties. The novel DIMLC is data-driven and does not require an explicit model. It can deal with model-plant mismatch and disturbances, enhancing the robustness against uncertainties. The theoretical results are verified by simulation study.
Keyword:
Uncertainty
Iterative methods
Task analysis
Adaptation models
Trajectory
Computational modeling
Robustness
Data-driven control
internal model control
iterative learning control (ILC)
nonlinear nonaffine system
nonrepetitive uncertainties
期刊
IF:
8.9
论文数:
7.6K
被引数:
7.2W
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