Adaptive Tunable Predefined-Time Backstepping Control for Uncertain Robotic Manipulators
Article Information
Abstract
In engineering applications, high-precision tracking control is crucial for robotic manipulators to successfully complete complex operational tasks. To achieve this goal, this study proposes an adaptive tunable predefined-time backstepping control strategy for uncertain robotic manipulators with external disturbances and model uncertainties. By establishing a novel practical predefined-time stability criterion, a tunable predefined-time backstepping controller is systematically presented, allowing the upper bound of tracking error settling time to be precisely determined by adjusting only one control parameter. To accurately address lumped uncertainty, two updating laws are designed: a fuzzy weight updating law and a boundary adaptive updating law, which together reduce dependence on system model knowledge. In addition, the singularity problem in the predefined-time design process is effectively avoided by constructing the hyperbolic tangent function. The efficacy of the proposed control strategy is verified through numerical simulations.
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References
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Cite This Article
TY - JOUR AU - Shi, Huihui AU - Xie, Shuzong AU - Chen, Qiang AU - Hu, Shuangyi AU - Yi, Shenglun PY - 2024 DA - 2024/12/18 TI - Adaptive Tunable Predefined-Time Backstepping Control for Uncertain Robotic Manipulators JO - ICCK Transactions on Sensing, Communication, and Control T2 - ICCK Transactions on Sensing, Communication, and Control JF - ICCK Transactions on Sensing, Communication, and Control VL - 1 IS - 2 SP - 126 EP - 135 DO - 10.62762/TSCC.2024.672831 UR - https://www.icck.org/article/abs/TSCC.2024.672831 KW - predefined-time control KW - adaptive fuzzy control KW - backstepping design KW - robotic manipulators AB - In engineering applications, high-precision tracking control is crucial for robotic manipulators to successfully complete complex operational tasks. To achieve this goal, this study proposes an adaptive tunable predefined-time backstepping control strategy for uncertain robotic manipulators with external disturbances and model uncertainties. By establishing a novel practical predefined-time stability criterion, a tunable predefined-time backstepping controller is systematically presented, allowing the upper bound of tracking error settling time to be precisely determined by adjusting only one control parameter. To accurately address lumped uncertainty, two updating laws are designed: a fuzzy weight updating law and a boundary adaptive updating law, which together reduce dependence on system model knowledge. In addition, the singularity problem in the predefined-time design process is effectively avoided by constructing the hyperbolic tangent function. The efficacy of the proposed control strategy is verified through numerical simulations. SN - 3068-9287 PB - Institute of Central Computation and Knowledge LA - English ER -
@article{Shi2024Adaptive,
author = {Huihui Shi and Shuzong Xie and Qiang Chen and Shuangyi Hu and Shenglun Yi},
title = {Adaptive Tunable Predefined-Time Backstepping Control for Uncertain Robotic Manipulators},
journal = {ICCK Transactions on Sensing, Communication, and Control},
year = {2024},
volume = {1},
number = {2},
pages = {126-135},
doi = {10.62762/TSCC.2024.672831},
url = {https://www.icck.org/article/abs/TSCC.2024.672831},
abstract = {In engineering applications, high-precision tracking control is crucial for robotic manipulators to successfully complete complex operational tasks. To achieve this goal, this study proposes an adaptive tunable predefined-time backstepping control strategy for uncertain robotic manipulators with external disturbances and model uncertainties. By establishing a novel practical predefined-time stability criterion, a tunable predefined-time backstepping controller is systematically presented, allowing the upper bound of tracking error settling time to be precisely determined by adjusting only one control parameter. To accurately address lumped uncertainty, two updating laws are designed: a fuzzy weight updating law and a boundary adaptive updating law, which together reduce dependence on system model knowledge. In addition, the singularity problem in the predefined-time design process is effectively avoided by constructing the hyperbolic tangent function. The efficacy of the proposed control strategy is verified through numerical simulations.},
keywords = {predefined-time control, adaptive fuzzy control, backstepping design, robotic manipulators},
issn = {3068-9287},
publisher = {Institute of Central Computation and Knowledge}
}
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