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Drill Vibration Suppression Through Phase-Locked Loop Control

  • Nicholas Martinez
  • Jermaine Chambers
  • Michelle Gegel
  • Eric SchmiererEmail author
  • Alex Scheinker
Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS)

Abstract

The drilling process produces vibrations that have adverse effects in a variety of applications, including precision machining, dental procedures, oil string operations, and explosives neutralization. This research seeks to prototype a rotating drill that actively suppresses the vibrations transmitted to the drilling target. The dynamics of the uncontrolled drilling system are first modeled in the axial direction of the drill tool. Then a phase-locked loop control is proposed which, along with sensors and actuators, serves to reduce vibrations during the drilling process by directly applying a forcing function out of phase with the excitation. To achieve versatility in application, the controller design includes adaptive capabilities such that, throughout a drilling process, the control system will measure the modal frequencies and adjust accordingly. The results of this study can lead to the production of drilling devices that minimally disturb the drilled object and produce superior surface finish.

Keywords

Drilling dynamics Phase-locked loop Vibration suppression Extremum-seeking function Adaptive control 

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Copyright information

© The Society for Experimental Mechanics, Inc. 2015

Authors and Affiliations

  • Nicholas Martinez
    • 1
  • Jermaine Chambers
    • 2
  • Michelle Gegel
    • 3
  • Eric Schmierer
    • 4
    Email author
  • Alex Scheinker
    • 5
  1. 1.Department of Mechanical EngineeringUniversity of New MexicoAlbuquerqueUSA
  2. 2.Department of Mechanical EngineeringPrairie View A&M UniversityPrairie ViewUSA
  3. 3.Department of Mechanical EngineeringMissouri University of Science and TechnologyRollaUSA
  4. 4.Applied Engineering and TechnologyLos Alamos National LaboratoryLos AlamosUSA
  5. 5.RF EngineeringLos Alamos National LaboratoryLos AlamosUSA

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