WEDM-adaptive control with a multiple input model for indentification of workpiece height

K. P. Rajurkar, W. M. Wang, W. S. Zhao

Research output: Contribution to journalArticle

28 Scopus citations

Abstract

The variation in power density during wire electrical discharge machining (WEDM) results in reduced productivity and wire rupture. This paper presents a WEDM adaptive control system that optimizes on-line the sparking frequency by estimating the workpiece height with a new multiple input model. This model describes the dynamic and stochastic relationships between average gap feedback voltage and spark frequency and machine table feed rate. Extensive experiments have been carried out to verify the new model. The proposed system correctly identifies the workpiece height and avoids the sudden rise in the estimated height found in existing system.

Original languageEnglish (US)
Pages (from-to)147-X32
JournalCIRP Annals - Manufacturing Technology
Volume46
Issue number1
DOIs
StatePublished - Jan 1 1997

Keywords

  • Adaptive control
  • Identification
  • Wire EDM

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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