Journal
INFORMATION SCIENCES
Volume 606, Issue -, Pages 272-291Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.ins.2022.05.043
Keywords
Adaptive robust control; Constraint-following; Fuzzy set theory; Stackelberg game
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Funding
- Natural Science Foundation of Anhui Province, China [2108085MF220]
- Research Project of Anhui Polytechnic University, China [2021YQQ003]
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In this paper, an adaptive robust constraint-following control scheme based on leader-follower Stackelberg game is proposed for uncertain mechanical systems. The proposed method is successfully applied to a lower limb exoskeleton robot system for rehabilitation training.
To comprehensively enhance the robust tracking performance, a leader-follower Stackelberg game oriented adaptive robust constraint-following control scheme has been proposed for a class of uncertain mechanical systems. In the proposed scheme, a fuzzy set-theoretic description represents the uncertainties (possibly fast time-varying), and an adaptive robust constraint-following control ensures the robust stability. With the fuzzy uncertainty description and control performance analysis, a leader-follower game theory is employed to obtain multiple optimal gains for the proposed control scheme. Further, the existence of these optimal parameters can be verified. The proposed approach is successfully applied to a lower limb exoskeleton (LLE) robot system for rehabilitation training. (C) 2022 Elsevier Inc. All rights reserved.
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