Abstract
A key challenge in electrical discharge machining (EDM) is to find a suitable combination out of numerous process parameters. Any changes, concerning the electrode materials or geometries, require newly optimized technologies. These technologies are to be developed from a considerable number of experiments which must be carried out by an experienced operator.
This paper presents a new method of finding the optimal parameters.
It seems likely that the evolution strategy (ES), a stochastic, metaheuristic optimization method, offers the great advantage of finding solutions, even with little knowledge of system behaviour.
The method involved a randomized and a derandomized ES, based on a non-elitistical (μ,λ)-evolution strategy with one parent and four children. The two ES were initialized from an unfavourable starting point (A) and from a favourable starting point (B), to investigate their effectiveness.
We demonstrate that starting from the unfavourable starting point A the processing duration tero could be reduced by a maximum of 77% with a slightly smaller linear wear of the tool electrode ΔlE after 40 trials.
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Streckenbach, J., Koref, I.S., Rechenberg, I., Uhlmann, E. (2018). Optimization with the Evolution Strategy by Example of Electrical-Discharge Drilling. In: Pérez García, H., Alfonso-Cendón, J., Sánchez González, L., Quintián, H., Corchado, E. (eds) International Joint Conference SOCO’17-CISIS’17-ICEUTE’17 León, Spain, September 6–8, 2017, Proceeding. SOCO ICEUTE CISIS 2017 2017 2017. Advances in Intelligent Systems and Computing, vol 649. Springer, Cham. https://doi.org/10.1007/978-3-319-67180-2_12
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DOI: https://doi.org/10.1007/978-3-319-67180-2_12
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