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Smooth Adaptive Internal Model Control Based on U Model for Nonlinear Systems with Dynamic Uncertainties
Joint Authors
Wang, Jing
Zhao, Li
Zhang, Weicun
Source
Mathematical Problems in Engineering
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-10-18
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
An improved smooth adaptive internal model control based on U model control method is presented to simplify modeling structure and parameter identification for a class of uncertain dynamic systems with unknown model parameters and bounded external disturbances.
Differing from traditional adaptive methods, the proposed controller can simplify the identification of time-varying parameters in presence of bounded external disturbances.
Combining the small gain theorem and the virtual equivalent system theory, learning rate of smooth adaptive internal model controller has been analyzed and the closed-loop virtual equivalent system based on discrete U model has been constructed as well.
The convergence of this virtual equivalent system is proved, which further shows the convergence of the complex closed-loop discrete U model system.
Finally, simulation and experimental results on a typical nonlinear dynamic system verified the feasibility of the proposed algorithm.
The proposed method is shown to have lighter identification burden and higher control accuracy than the traditional adaptive controller.
American Psychological Association (APA)
Zhao, Li& Wang, Jing& Zhang, Weicun. 2016. Smooth Adaptive Internal Model Control Based on U Model for Nonlinear Systems with Dynamic Uncertainties. Mathematical Problems in Engineering،Vol. 2016, no. 2016, pp.1-11.
https://search.emarefa.net/detail/BIM-1111956
Modern Language Association (MLA)
Zhao, Li…[et al.]. Smooth Adaptive Internal Model Control Based on U Model for Nonlinear Systems with Dynamic Uncertainties. Mathematical Problems in Engineering No. 2016 (2016), pp.1-11.
https://search.emarefa.net/detail/BIM-1111956
American Medical Association (AMA)
Zhao, Li& Wang, Jing& Zhang, Weicun. Smooth Adaptive Internal Model Control Based on U Model for Nonlinear Systems with Dynamic Uncertainties. Mathematical Problems in Engineering. 2016. Vol. 2016, no. 2016, pp.1-11.
https://search.emarefa.net/detail/BIM-1111956
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1111956