• Electronics Optics & Control
  • Vol. 29, Issue 12, 32 (2022)
ZHENG Xian and LIU Ye
Author Affiliations
  • [in Chinese]
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    DOI: 10.3969/j.issn.1671-637x.2022.12.006 Cite this Article
    ZHENG Xian, LIU Ye. Novel Dynamic Surface Based Asymptotic Tracking Control for Systems with Unknown Time-Delay and Dead-Zone Input[J]. Electronics Optics & Control, 2022, 29(12): 32 Copy Citation Text show less

    Abstract

    Aiming at a class of nonlinear systems with unknown time-delay and dead-zone inputs,an adaptive asymptotic tracking control algorithm based on novel dynamic surface is proposed.Firstly,a nonlinear filter with a positive time-varying integral function is constructed,which is different from the traditional low-order linear filter.It can not only avoid the problem of “differential explosion” and reduce the computational burden,but also effectively compensate for the boundary layer error.Secondly,the radial basis neural network and a new inequality are utilized to deal with the unknown nonlinear time-delay terms.Finally, the neural network error and the unknown parameters of the dead zone are estimated online.Theoretical analysis shows that the semi-global uniform boundedness of all signals in the closed-loop system is achieved and that the tracking error converges to zero.The simulation results have verified the effectiveness of the proposed control algorithm.
    ZHENG Xian, LIU Ye. Novel Dynamic Surface Based Asymptotic Tracking Control for Systems with Unknown Time-Delay and Dead-Zone Input[J]. Electronics Optics & Control, 2022, 29(12): 32
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