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Suppression of torsional vibrations in drilling systems by using the optimization-based adaptive back-stepping controller

Tashakori, S ; Sharif University of Technology | 2019

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  1. Type of Document: Article
  2. Publisher: Levrotto and Bella , 2019
  3. Abstract:
  4. Stick-slip oscillations are one of the main sources of system failure and bit damage in a rotary drilling system. Thus, suppressing such vibrations is of great importance. There are different modelling approaches demonstrating drill string dynamics, among which lumped parameter models are more common in control studies due to faster computations. Since the system dynamic includes uncertain terms, in this paper an adaptive back-stepping controller is proposed. To tune controller gains, particle swarm optimization algorithm has been employed which guarantees a better control performance. The simulation results demonstrate the feasibility of the designed controller. The results have been also compared to those of previously reported adaptive sliding mode. Although sliding mode controller is more robust to external disturbances, back-stepping controller leads to a better performance regarding the response time and tracking behaviour. © 2019, International Journal of Mechanics and Control, All Rights Reserved
  5. Keywords:
  6. Adaptive back-stepping control ; Drill string ; Dry friction ; Particle swarm optimization (PSO)
  7. Source: International Journal of Mechanics and Control ; Volume 20, Issue 1 , 2019 , Pages 105-110 ; 15908844 (ISSN)