A new identification method for non-linear roll resonance in irregular waves

Acanfora, Maria; Balsamo, Flavio; Lauria, D.; Rizzuto, Enrico

doi:10.1016/j.oceaneng.2019.106809

Cited by 10 publications

(1 citation statement)

References 19 publications

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“…Path tracking technique was used in [10], where the authors found a nonlinear bifurcation set with six degrees of freedom and obtained the chaotic attractors generated by periodical system multiplication. Acanfora et al [11] used the optimization algorithm to explain the phase spectrum's influence on resonance phenomenon development, given the mixed nonlinear model of six degrees of freedom.…”

Section: Introductionmentioning

confidence: 99%

Improved Sliding Mode Finite-Time Synchronization of Chaotic Systems with Unknown Parameters

et al. 2020

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This work uses the sliding mode control method to conduct the finite-time synchronization of chaotic systems. The utilized parameter selection principle differs from conventional methods. The designed controller selects the unknown parameters independently from the system model. These parameters enable tracking and prediction of the additional variables that affect the chaotic motion but are difficult to measure. Consequently, the proposed approach avoids the limitations of selecting the unknown parameters that are challenging to measure or modeling the parameters solely within the relevant system. This paper proposes a novel nonsingular terminal sliding surface and demonstrates its finite-time convergence. Then, the adaptive law of unknown parameters is presented. Next, the adaptive sliding mode controller based on the finite-time control idea is proposed, and its finite-time convergence and stability are discussed. Finally, the paper presents numerical simulations of chaotic systems with either the same or different structures, thus verifying the proposed method’s applicability and effectiveness.

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Section: Introductionmentioning

confidence: 99%