Abstract
This paper presents a robust control approach for nonlinear uncertain crane systems with a three DOF framework. We deal with an overhead crane in which a trolley located on the top is moved to x- and y-axes independently. We first approximate the nonlinear system model through feedback linearization transformation to simply construct a PD control and then design a robust control system for compensating control deviation feasibly occurring due to modeling error or system perturbation in practice. An adaptive control rule is analytically derived by using Lyapunov stability theory given bounds of system perturbation. We accomplish numerical simulation for evaluating the proposed methodology and demonstrate its superiority by comparing with the traditional control strategy.
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This paper was recommended for publication in revised form by Associate Editor Dong Hwan Kim
Hyun Cheol Cho received a B.S. from the Pukyong National University in 1997, a M.S. from the Dong-A University, Korea in 1999, and a Ph.D. from University of Nevada-Reno, USA in 2006. He is currently a post-doc researcher in the Dept. of Electrical Engineering, Dong-A University. His research interests are in the areas of control systems, neural networks, stochastic process, and signal processing.
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Cho, H.C., Lee, J.W., Lee, Y.J. et al. Lyapunov theory based robust control of complicated nonlinear mechanical systems with uncertainty. J Mech Sci Technol 22, 2142–2150 (2008). https://doi.org/10.1007/s12206-008-0707-z
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DOI: https://doi.org/10.1007/s12206-008-0707-z