Open AccessDynamics of in-process control with non-contact air gauges
Author(s) -
Mirosław Rucki
Publication year - 2020
Publication title -
reports in mechanical engineering
Language(s) - English
Resource type - Journals
ISSN - 2683-5894
DOI - 10.31181/rme200101180r
Subject(s) - gauge (firearms) , machining , process (computing) , mechanical engineering , pressure measurement , work (physics) , range (aeronautics) , constant (computer programming) , mechanics , atmospheric pressure , environmental science , control theory (sociology) , computer science , simulation , meteorology , engineering , materials science , control (management) , physics , aerospace engineering , artificial intelligence , metallurgy , programming language , operating system
Dynamic properties of the air gauges performing in-process measurement are of the great importance because of dynamic error affecting the measurement results. The paper presents the analysis of the air gauges dynamics and some practical recommendation. The investigations proved the dependence of the time constants on the actually measured back-pressure. In practical solutions of in-process control, the air gauge must work in conditions of falling back-pressure since with the material removal dimensions of the machined workpiece go down. Thus, in the area of the smallest values of back-pressure within the measuring range, the time constant value is the largest. Worsening of the air gauge dynamic properties at the end stage of the machining must be considered when the dynamic characteristics of the projected air gauge are calculated.