Applying an Interval Criterion of Transition Process End for Testing Complex Objects
Yury S. Bekhtin, Alexey A. Lupachev, Nay Myo Kyaw, Tatiana Y. Kovaleva · 2019
The paper describes the new methods of applying the standardized interval criterion for the transition process end during testing complex objects. Analysis of signals in the measuring system is carried out in on-line mode. The classification of the transition process end criteria and correlation of the interval criterion with the known ones are considered. The examples of such criteria in measuring instruments are given. The criterion of the interval kind uses the current information about the permissible increment of the transient signal in the measuring circuit in a given observation interval. The analysis of the interval criterion has shown that there are some restrictions on its application due to a significant dynamic error during measuring the time of the transition process end. It is explained by the parametric and structural uncertainty of the measuring circuit. The parameters of the criterion determine the critical value of the time constant of the measuring circuit model and the area of its use. The results of the digital simulation of applying the interval criterion for the transition process end when measuring the temperature of the test object with dynamic sensors of the first and second orders are presented.