Fixed-time integral fast nonsingular terminal sliding mode control and its application to chaos suppression in gyros system

Ai, Yingdong; Wang, Huanqing

doi:10.1080/00207179.2023.2228433

Cited by 1 publication

(1 citation statement)

References 35 publications

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“…Compared to PID control and optimal control, SMC offers better anti-interference ability [23,24]. Under the framework of SMC, the tracking process of the system can be divided into a sliding surface reaching stage and a sliding stage [18,25,26]. To fully improve the response speed, an integral sliding surface was constructed so that the system is located on the sliding surface in the initial stage [27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Adaptive Finite-Time Backstepping Integral Sliding Mode Control of Three-Degree-of-Freedom Stabilized System for Ship Propulsion-Assisted Sail Based on the Inverse System Method

Liu,

Song,

Zhang

et al. 2024

JMSE

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The three-degree-of-freedom (3-DOF) stabilized control system for ship propulsion-assisted sails is used to control the 3-DOF motion of sails to obtain offshore wind energy. The attitude of the sail is adjusted to ensure optimal thrust along the target course. An adaptive finite-time backstepping integral sliding mode control based on the inverse system method (ABISMC-ISM) is presented for attitude tracking of the sail. Considering the nonlinear dynamics and strong coupling of the system, a decoupling strategy is established using the inverse system method (ISM). Constructing inverse dynamics to eliminate internal coupling, the system is transformed into independent pseudolinear subsystems. For the decoupled open-loop subsystems, an adaptive finite-time backstepping integral sliding mode control is designed to achieve closed-loop control. A backstepping-based integral sliding surface is proposed to eliminate the phase-reaching stage of the sliding surface. Considering the unmodelled dynamics and external disturbances, an adaptive extreme learning machine (AELM) was designed to estimate the disturbances. Furthermore, a sliding mode reaching law based on finite-time theory was employed to ensure that the system returns to the sliding surface in a finite time under chattering conditions. Experiments on a principle prototype demonstrate the effectiveness and energy-saving performance of the proposed method.

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