Robust controller design for turning operations based on measured frequency response functions

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

One of the most significant limitation of the productivity of machining operations is the regenerative machine tool vibration, also called machine tool chatter, which is a self-excited vibration between the tool and the workpiece induced by the chip formation mechanism. Extension of the chatter-free parameters is possible by active chatter control techniques. The design of the controller requires the identification of the dynamic properties of the system. Uncertainties in the system parameters may result in an inappropriate control performance. Robust control design is therefore a necessary step during the optimization of machining operations. In this paper, a fast and efficient method is presented to determine the region of control gains in the presence of uncertainties in the measured frequency response functions. The method is based on the concept of structured singular values.

Original languageEnglish
Pages (from-to)7103-7108
Number of pages6
JournalIFAC-PapersOnLine
Volume50
Issue number1
DOIs
Publication statusPublished - Jul 1 2017

Keywords

  • Machining
  • Robust control
  • Robust time-delay systems
  • Stability of delay systems
  • Structured singular value

ASJC Scopus subject areas

  • Control and Systems Engineering

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