Articles with "string system" as a keyword



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Neural network based boundary control of a vibrating string system with input deadzone

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Published in 2018 at "Neurocomputing"

DOI: 10.1016/j.neucom.2017.09.050

Abstract: Abstract In this paper, a boundary control scheme is developed for a vibrating flexible string system subject to input deadzone and external disturbance. First, a basic boundary control scheme is proposed to suppress the string’s… read more here.

Keywords: control; string system; neural network; input deadzone ... See more keywords
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Hybrid Interval Type-2 Fuzzy PID+I Controller for a Multi-DOF Oilwell Drill-String System

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Published in 2022 at "IEEE Access"

DOI: 10.1109/access.2022.3185021

Abstract: The control of multibody drill-string systems is not easy and designing such systems is considered challenging because of the difficulty in the dynamic analysis of its nonlinear characteristics and parametric uncertainties. An optimal hybrid interval… read more here.

Keywords: system; drill string; control; type fuzzy ... See more keywords
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Adaptive Control of a Flexible String System With Input Hysteresis

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Published in 2018 at "IEEE Transactions on Control Systems Technology"

DOI: 10.1109/tcst.2017.2669158

Abstract: In this brief, a vibration suppression scheme is investigated for a flexible string system with input hysteresis. The input hysteresis is formulated as a linear desired input and a “disturbance-like” term, whose unknown bound is… read more here.

Keywords: system; control; string system; input hysteresis ... See more keywords
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Non-Linear Dynamic Analysis of Drill String System with Fluid-Structure Interaction

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Published in 2021 at "Applied Sciences"

DOI: 10.3390/app11199047

Abstract: In this research, the non-linear dynamics of the drill string system model, considering the influence of fluid—structure coupling and the effect of support stiffness, are investigated. Using Galerkin’s method, the equation of motion is discretized… read more here.

Keywords: system; string system; non linear; drill string ... See more keywords