Prediction-Based Control for Mitigation of Axial–Torsional Vibrations in a Distributed Drill-String System
نویسندگان
چکیده
This article proposes a control strategy to stabilize the axial–torsional dynamics of distributed drill-string system. An infinite-dimensional model for vibrational drill string is used as basis controller design. In this article, both cutting process and frictional contact effects are considered in bit–rock interaction model. Moreover, models top-side boundary conditions regarding axial torsional actuation considered. The resulting formulated terms neutral-type delay differential equations that involve constant state delays, state-dependent input delays arising from nature at bit. Using spectral approach, stability stabilizability associated linearized analyzed support optimization-based continuous pole-placement technique has been employed design stabilizing controller. Since designed state-feedback law needs prediction, predictor with observer structure proposed. Both only employ measurements. effectiveness strategy, presence measurement noise, shown representative case study. It also robust parametric uncertainty interaction.
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ژورنال
عنوان ژورنال: IEEE Transactions on Control Systems and Technology
سال: 2022
ISSN: ['1558-0865', '2374-0159', '1063-6536']
DOI: https://doi.org/10.1109/tcst.2021.3065669