Um ESTUDO COMPARATIVO DE ESTABILIDADE DE SISTEMAS DE MEDIÇÃO COM BASE NA CAPABILIDADE E NO ERRO NORMALIZADO

Abstract

The capability study applied to measurement systems has been used to monitor their stability and to verify the suitability of measurement processes. In turn, normalized error is an analytical comparative tool used to monitor and determine how much an instrument or measurement system differs from a standard. The purpose of this article is to establish a study that relates the behavior of normalized error and the capability coefficient (Cdl*) regarding monitoring the stability of a profile projector and a measuring microscope, through these two parameters, using calibrated wires as standards. Through this study, it was possible to answer the following questions: Do both parameters have similar behaviors for monitoring the two measurement systems? Is one parameter more susceptible to detecting variability than the other? Is one parameter more effective than the other? Did the methodology developed and adopted for the use of normalized error as a tool for monitoring the stability of the studied measurement systems prove to be efficient?