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Dynamic model of a non-linear servo control system using transmission line modelling technique

Pislaru, Crinela, Moreno-Castaneda, V.Y. and Ford, Derek G. (2004) Dynamic model of a non-linear servo control system using transmission line modelling technique. In: UKACC International Conference CONTROL 2004, 6-9 September 2004, University of Bath. (Unpublished)

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      Abstract

      The modelling and simulation of a test rig based on the
      transmission line modelling technique is presented in
      this paper. The studied test rig is a non-linear servo
      control system and represents a CNC machine tool feed
      drive where the controller commands the movement of
      worktable linked to a motor through a ball-screw.
      The transmission line modelling technique has been
      successfully applied until now for hydraulic systems,
      electromagnetic, acoustics and several mechanical
      applications (not much emphasis on digital controllers).
      The paper presents a novel application of this method
      for modelling the interaction between the position loop
      controller, servo system and the worktable mechanism.
      It addresses the modelling of the non-linearities
      (Coulomb and viscous friction, backlash) and axial and
      torsional forces applied on the ball-screw nut during its
      linear movement.
      The simulation results generated by the MATLAB
      program compare well with the measured data when
      same stimuli are applied to the test rig. So this
      numerical method is successfully applied for accurate
      modelling of non-linear and dynamic behaviour of CNC
      machine tools feed drives.

      Item Type: Conference or Workshop Item (Paper)
      Additional Information: Session 4B - Non-Linear Systems
      Subjects: T Technology > T Technology (General)
      T Technology > TJ Mechanical engineering and machinery
      Schools: School of Computing and Engineering
      School of Computing and Engineering > Centre for Precision Technologies
      School of Computing and Engineering > Centre for Precision Technologies > Engineering Control and Machine Performance Research Group
      School of Computing and Engineering > Pedagogical Research Group
      School of Computing and Engineering > Diagnostic Engineering Research Centre
      School of Computing and Engineering > Diagnostic Engineering Research Centre > Energy, Emissions and the Environment Research Group
      School of Computing and Engineering > Diagnostic Engineering Research Centre > Measurement System and Signal Processing Research Group
      Related URLs:
      Depositing User: Sara Taylor
      Date Deposited: 07 May 2009 12:56
      Last Modified: 25 Nov 2010 11:58
      URI: http://eprints.hud.ac.uk/id/eprint/4213

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