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Hybrid modelling technique applied to digital feed drives

Widiyarto, Muhammad Helmi Nur, Pislaru, Crinela, Ford, Derek G., Longstaff, Andrew P. and Myers, Alan (2005) Hybrid modelling technique applied to digital feed drives. In: Proceedings of the 7th International Conference and Exhibition on Laser Metrology, Machine Tool, CMM & Robotic Performance. European Society for Precision Engineering and Nanotechnology, pp. 454-463. ISBN 1861941188

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      Abstract

      The hybrid modelling technique considering distributed load, explicit damping factors and measured non-linear effects has been shown to effectively represent the dynamics of CNC machine tool feed drives. The resonant frequencies produced by the mechanical elements of the machine were simulated for an analogue feed drive with DC motors and belt-pulley transmission system. The rapid increase in the use of digital control systems and permanent magnet synchronous AC motors for modern feed drives requires an update on this modelling technique. This paper presents an investigation into the application of the technique for the digital feed drive of a Cincinnati Arrow 500 CNC machine tool equipped with a Siemens Sinumerik 840D controller. The drive utilises a direct transmission system and the field oriented control technique in the current control loop. The discrete method of approach to the current control loop is used to represent the digital states of the current, torque and speed control. The model is developed in MATLAB/ SIMULINK employing the Power System (Simpower) Blockset. Model validation in the time and frequency domain is performed using the deterministic and pseudo random binary signals from the controller’s built-in routines. The results are shown to provide a sufficient solution into the representation of the feed drive dynamic behaviour. The investigation is part of a wider study to develop an active vibration system for CNC machine tools and to develop a machine tool drive model, useful for the design, diagnosis, optimisation and condition monitoring purposes.

      Item Type: Book Chapter
      Additional Information: Presented at the 7th International Conference and Exhibition on Laser Metrology, Machine Tool, CMM & Robotic Performance, Lamdamap 2005, Cranfield University, 27th-30th June 2005
      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 15:05
      Last Modified: 12 Jan 2011 11:53
      URI: http://eprints.hud.ac.uk/id/eprint/4236

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