Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
DESIGN AND ANALYSIS OF ACTIVE CONTROL TECHNIQUES FOR STICK-SLIP SUPPRESSION IN ROTARY DRILLING SYSTEMS
Submission Author:
Helio Cruz , SP
Co-Authors:
Helio Cruz, Marcelo A. Trindade
Presenter: Helio Cruz
doi://10.26678/ABCM.COBEM2019.COB2019-1333
Abstract
Vibrations induced by stick-slip are a harmful phenomenon that can reduce effectiveness of the drilling processes and cause damage to drillstring components. A possible way to overcome this problem is to apply active control techniques. This work intends to design, analyze and compare a traditional Proportional-Integral (PI) controller and an alternative Optimal Static Output Feedback (OSOF) controller applied to the drilling processes. To implement the OSOF controller, a translated modal form is developed, which transforms the problem of tracking the desired system velocity into a problem of asymptotic stabilization about the origin. Simulations are performed for the nominal model and cases in which an uncertainties range is considered for the friction parameters of the bit-rock interaction. Preliminary results indicate that the OSOF controller proposed present better performance and lower sensitivity to parameter variations.
Keywords
stick-slip, Oil well drilling, torsional vibration control
