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Nonlinear Damping Control for Interconnected Nonlinear Systems

Title
Nonlinear Damping Control for Interconnected Nonlinear Systems
Author
정정주
Keywords
Damping; Observers; Estimation error; Nonlinear systems; Transient analysis; Lyapunov methods; Shape
Issue Date
2015-12
Publisher
IEEE
Citation
2015 IEEE 54th Annual Conference on Decision and Control (CDC), Page. 7659-7664
Abstract
In this paper, we propose enhanced nonlinear damping control for a class of singularly perturbed interconnected nonlinear systems (SPINSs). The proposed method transforms SPINS into a feedback connection of two subsystems. Then, nonlinear damping is implemented to improve the transient behavior of slow subsystem. The proposed method provides weighting factors for each tracking error, which enable the design of the energy function to shape the tracking performance for each state. We also design an augmented state observer to estimate unknown disturbances and unmeasurable states. Using a composite Lyapunov function, we prove that the origin of the tracking error dynamics is globally exponentially stable. It is also analyzed that the tracking errors are also globally uniformly ultimately bounded for a time-varying bounded disturbance. Simulations were performed to evaluate the tracking performance of the proposed method. Simulation results validate the effectiveness of the proposed method.
URI
http://ieeexplore.ieee.org/document/7403430/http://hdl.handle.net/20.500.11754/29548
ISBN
978-1-4799-7886-1
DOI
10.1109/CDC.2015.7403430
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRICAL AND BIOMEDICAL ENGINEERING(전기·생체공학부) > Articles
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