Abstract
Recently electrical discharge machining (EDM) has been used in vary wide fields, since its machining characteristics have markedly improved owing to the adoption of semiconductor switching elements. On the other hand machining techniques have become to be conplicated and to require considerable skills. For this kind of reason the tendency to start to apply adaptive control to EDM increased rapidly and Ford Motor's Company tried it first in 1967 to 1968. Mr. Fred, L, King (1) reported about this matter in detail. We also started to study on the adaptive control system of ELM several years ago, and have established the new control method by which satisfactory results have been obtained.
In this paper we first report about the EDM phenomena which were investigated experimentally for the study of the adaptive control, and next introduce the new control method.
