| Tong Hao (佟浩),Li Yong.[J].高技术通讯(英文),2012,18(3):223~229 |
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| Self-adaptive fuzzy controller with formulary rule for servo control of discharge gap in Micro EDM |
| Revised:June 10, 2029 |
| DOI：10.3772/j.issn.1006-6748.2012.03.002 |
| 中文关键词: |
| 英文关键词: micro-EDM, self-adaptive fuzzy control, discharge gap, formulary rule, fast convergence algorithm |
| 基金项目: |
| Author Name | Affiliation | | Tong Hao (佟浩) | | | Li Yong | |
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| 中文摘要: |
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| 英文摘要: |
| In micro electrical discharge machining (micro EDM), it is difficult for servo controlling the narrow discharge gap with the characters of non-linear and quick change. In this paper, aiming at solving the problems above, a self-adaptive fuzzy controller with formulary rule (SAFCFR) is presented based on the dual feedbacks composed by gap electric signal and discharge-ratio statistics. To ensure the properties of self-optimizing and fast stabilization, the formulary rule was designed with a tuning factor. In addition, the fast-convergence algorithms were introduced to adjust control target center and output scale factor. In this way, the normal discharge ratio can tend to the highest value during micro-EDM process. Experimental results show that the proposed algorithms are effective in improving the servo-control performance. According to the drilling-micro-EDM experiments, the machining efficiency is improved by 20% through applying SAFCFR. Moreover, SAFCFR is a prompt way to optimize parameters of discharge-gap servo control. |
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