کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11002334 | 1437946 | 2018 | 22 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Torsional vibration control of drill-string systems with time-varying measurement delays
ترجمه فارسی عنوان
کنترل لرزش پیچشی سیستم ریل دندانه دار با تاخیر اندازه گیری زمان متفاوت
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کلمات کلیدی
سیستم های مته رشته، برآورد دولت، کنترل بازخورد خروجی ارتعاشات لغزش تاخیر زمان متغیر
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی کامپیوتر
هوش مصنوعی
چکیده انگلیسی
This paper is concerned with torsional vibration control of drill-string systems. The objective is to develop a delay-dependent control scheme such that the downhole vibrations can be minimized by using ground measurement output with time-varying measurement delays. By regarding a drill-string as a series of lumped masses, a state space model is derived from a generic multi-degree-of-freedom model of the drill-string through a variable transformation. This provides the foundation of an observer-based output feedback control system, in which an internal model is inserted to represent the drill rig for improving the tracking performance, and a state observer is combined with a low-pass filter to estimate an equivalent effect of the downhole bit-rock interaction in the control input channel. To calculate the parameters of this control system, some sufficient conditions are derived in terms of linear-matrix-inequalities by taking into account a refined allowable delay set. It is shown through a numerical example that (i) the measurement of rotary table's angular displacement helps to produce less conservative results and (ii) a small measurement delay is beneficial for designing a controller with a smaller gain in the sense of Euclidean norm, however it may also result in a larger control torque by enhancing the bit-rock interaction.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Information Sciences - Volume 467, October 2018, Pages 528-548
Journal: Information Sciences - Volume 467, October 2018, Pages 528-548
نویسندگان
Chengda Lu, Min Wu, Xin Chen, Weihua Cao, Chao Gan, Jinhua She,