Journal
IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS
Volume 49, Issue 11, Pages 2242-2253Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TSMC.2018.2843523
Keywords
Axially moving string; backstepping technique; disturbance observer; input restriction; vibration boundary control; well-posedness
Funding
- National Natural Science Foundation of China [61203060]
- Science and Technology Planning Project of Guangdong Province of China [2017B090910006, 2016B090927010, 2016B010126001]
- Fundamental Research Funds for the Central Universities of SCUT [2017ZD058]
- China Scholarship Council [[2016]3192]
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The vibration offsets reduction is studied for an industrial axially moving accelerated string subjected to the external disturbances and input saturation. A boundary control strategy is put forward to reduce the vibration offsets and an auxiliary term is introduced to handle the restriction of the input saturation. In addition, both infinite-dimensional observer and finite-dimensional observer are, respectively, designed to track unknown disturbances. Under the developed control strategy, the existence, uniqueness, and convergence of the solution of the closed-loop string system are discussed without resorting to model reduction methods. By choosing the proper control parameters, the simulations are given to verify the performance of the developed control strategy.
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