A command average machining current It(n) corresponding to change of a workpiece thickness is given by the following equations: ##EQU1## wherein the reference Ia(n) designates an actual average machining current Ia(n) at the workpiece thickness (Tn); It(n) designates an average machining current of the...http://www.google.de/patents/US4366359?utm_source=gb-gplus-sharePatent US4366359 - Wire cut electric discharge machining control method
