Process analysis using adapted Rogowski coil for non-conventional processes

Abstract

Abstract. The process analysis of non-conventional processes is very complex because many critical subprocesses can occur. These subprocesses can be determined among other things, by their positive and negative current increases. A process adapted Rogowski coil is particularly suitable for analyzing the current increases. Using the example of plasma electrolytic polishing, it will be shown how pulse typical effects can be distinguished from process typical effects. The boundary condition for this development was that the size of the measuring sensor had to be adapted to the system conditions of the plasma electrolytic polishing process. It was not necessary to calculate the real current, but rather to recognize the process situation very quickly. For this purpose, a higher signal amplification must be carried out during the polishing process and the initialization phase must be hidden. The example of experimental test setup shows, which analyzes can be carried out. The influence of the process disruption on the result can also be determined through comparisons with the processed final results.