A novel control system for chatter suppression in turning

  • Gabriel Frumușanu Dunarea de Jos University of Galati, Department of Manufacturing, Robotics and Welding Engineering, Romania
  • Ionuț Constantin Dunarea de Jos University of Galati, Department of Manufacturing, Robotics and Welding Engineering, Romania
  • Alexandru Epureanu Dunarea de Jos University of Galati, Department of Manufacturing, Robotics and Welding Engineering, Romania
Keywords: chatter suppression, cutting force signal featuring, online monitoring, stability limit proximity, turning

Abstract

The increasing requirements concerning machining precision and efficiency call for the development of machining system new control strategies, which should enable the process performance maximization. By assuming the productivity as main performance criterion, in this paper a novel control system based on a dedicated strategy for machining process control is presented at conceptual level. The process control strategy lays on a permanent assessment of the process current dynamical state, by referring the system operating point position to the stability limit, and on a periodic (but frequent) cutting regime adjustment in order to keep this point in the stability domain, as close as possible to the stability limit. The system operating point position is assessed by cutting-force on-line monitoring, followed by a dedicated feature extraction and reference to an interval of values characterizing the stability limit proximity domain. The system control algorithm has a sequential character, and consists in step by step increasing / decreasing the cutting speed or the feed rate, depending on the feature value position respect the target interval.

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Published
2011-11-16
How to Cite
1.
Frumușanu G, Constantin I, Epureanu A. A novel control system for chatter suppression in turning. Annals of ”Dunarea de Jos” University of Galati, Fascicle V, Technologies in machine building [Internet]. 16Nov.2011 [cited 28Mar.2024];29(2):107-10. Available from: https://www.gup.ugal.ro/ugaljournals/index.php/tmb/article/view/1784
Section
Articles

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