標題: Improvement of machining accuracy by fuzzy logic at corner parts for wire-EDM
作者: Lin, CT
Chung, IF
Huang, SY
電控工程研究所
Institute of Electrical and Control Engineering
關鍵字: fuzzy control;fuzzy rules;membership function;electrical discharge machining;wire electrode;sparking force
公開日期: 16-Sep-2001
摘要: Wire electrical discharge machining (wire-EDM) has always occupied an important position in some production fields, due to its capability of machining hard materials and intricate shapes. However, the machining accuracy, especially at corner parts, may be destroyed because of some phenomena such as wire deflection and vibration, etc. The purpose of this paper is to develop a control strategy based on fuzzy logic so that the machining accuracy at corner parts for wire-EDM can be improved. The fuzzy rules based on the wire-EDM's physical characteristics, experimental data, and operator's experience are constructed, so that the reduced percentage of sparking force can be determined by a multi-variables fuzzy logic controller. The objective of the total control is to improve the machining accuracy at corner parts, but still keep the cutting feedrate at fair values. As a result of experiments, machining errors of corner parts, especially in rough-cutting, can be reduced to less than 50% of those in normal machining, while the machining process time increases not more than 10% of the normal value. (C) 2001 Elsevier Science B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/S0165-0114(00)00034-8
http://hdl.handle.net/11536/29391
ISSN: 0165-0114
DOI: 10.1016/S0165-0114(00)00034-8
期刊: FUZZY SETS AND SYSTEMS
Volume: 122
Issue: 3
起始頁: 499
結束頁: 511
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