Calibration features of information-measuring systems for diagnosing technical condition based on the analysis of the mark image blurring

Abstract

Background. The necessity of creating diagnostic systems for vibro-loaded objects is shown. Contactless systems have sufficient capabilities to determine the amplitude of vibrations, it is noted that an important part of such systems is the calibration process. The purpose of the study is to improve the accuracy of calibration of vibration displacement meters, develop methods for modeling vibration displacement and estimating errors of measurement conversion Materials and methods. The principle of operation of the dynamic calibration system for measuring vibration displacement is proposed. Results. Modeling using this technique has been carried out. A method for estimating measurement errors of calibration vibration displacement has been developed, justified and illustrated with a specific numerical example. A family of curves has been constructed showing the dependence of the reduced error of the calibration system of vibration displacement measuring instruments on the radius of the calibration round mark for different values of the number of pixels per image of the calibration round mark. Conclusions. A technique for numerical simulation of the process of measuring transformation of the image of a calibration round mark and the trace of its vibrational blur has been developed.

Keywords

• vibration
• measurement
• error
• blur
• calibration
• image
• pixel
• round label