Intelligent Sensing Unit for Estimation Roughness of Electrical Discharge Machining

Estimating the quality of an electrical discharge machining (EDM) workpiece is challenging when attempting to extract features from the stochastic and time-consuming processes. To solve this problem, an intelligent sensing unit for EDM (ISU-EDM) is proposed to extract key machining features for esti...

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Bibliographic Details
Published inInternational journal of automation and smart technology Vol. 7; no. 3
Main Authors Haw-Ching Yang, Chun-Hong Cheng, Ting-Wei Su, Lu-Wen Kung , Chia-Ming Jan, Wen-Chieh Wu, and Min-Nan Wu
Format Journal Article
LanguageEnglish
Published 09.07.2025
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ISSN2223-9766
2223-9766
DOI10.5875/ausmt.v7i3.1431

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Summary:Estimating the quality of an electrical discharge machining (EDM) workpiece is challenging when attempting to extract features from the stochastic and time-consuming processes. To solve this problem, an intelligent sensing unit for EDM (ISU-EDM) is proposed to extract key machining features for estimating workpiece roughness. During machining, the ISU-EDM simultaneously samples the signals of both the discharge current and voltage, while automatically segmenting the signals according to tool location and discharge effectiveness. Furthermore, the machining features could be extracted from the segmented data by a genetic-algorithm-based distribution fitting method. After applying the features to an automated virtual metrology system, experimental results show that the mean absolute percentage error of roughness estimation is less than 15%.
ISSN:2223-9766
2223-9766
DOI:10.5875/ausmt.v7i3.1431