METHOD FOR CONTROLING THE TECHNICAL CONDITION
OF MOVING MECHANISMS BASED ON STATISTICAL ANALYSIS OF VIBRATION BLURING IMAGES OF A TEST OBJECT ROUND FORM 

Grigoriev Alexey Valeryevich, candidate of technical sciences, associate professor, sub-department of radio equipment design and production, Penza State University (40 Krasnaya street, Penza, Russia), a_grigorev@mail.ru
Kochegarov Igor' Ivanovich, candidate of technical sciences, associate professor, sub-department of radio equipment design and production, Penza State University (40 Krasnaya street, Penza, Russia), kipra@pnzgu.ru
Yurkov Nikolay Kondratievich, doctor of technical sciences, professor, the honoured worker of science of the Russian Federation, head of sub-department of radio equipment design and production, Penza State University (40 Krasnaya street, Penza, Russia), yurkov_NK@mail.ru,
Reuta Nikita Sergeevich,postgraduate student, Penza State University (40 Krasnaya street, Penza, Russia), saparap@mail.ru
Lapshin Eduard Vladimirovich, doctor of technical sciences, professor, sub-department of radio equipment design and production, Penza State University (40 Krasnaya street, Penza, Russia), kipra@pnzgu.ru

004.932.2 

10.21685/2307-4205-2020-3-7 

The article proves the need for reliable periodic monitoring of the vibrational state of modern complex systems in order to detect defects in them at the earliest possible stages of their development. A description is given of the wear process of rolling bearings and the associated dynamics of the vibration signal parameters. An analysis of the vibration control tools currently used is shown, which shows that these tools do not support the vibration signal control of operating systems in the required frequency range and with the required sensitivity. The analysis of the vibrational state zones established by the current standards and the capabilities of modern control equipment to determine which of these zones the controlled complex technical system is located in is carried out. The description of the technical essence of the method proposed in the article for controlling the vibrational state of moving mechanisms is given. The implementation scheme of this method is given. The analysis of literary sources describing various aspects of the analysis of vibrational blur of the image of a test object of a round shape is carried out. The analysis of the frequency range controlled by the proposed method of the vibration signal. The predicted level of the sensitivity threshold of the system that implements the control method proposed in the article is substantiated. A description of the experimental testing of the method. An experimental graph of the sequence of vibrational increments of the image area of a round mark is presented and analyzed. The principles of the formation of an invariant of the rate of change of the amplitude of the vibrational displacement are described, on the basis of which the intensity of the tendency of the vibrational parameters of the source under test that is hidden against the background of noise is detected and evaluated. 

moving mechanism, rolling bearing, latent defect, wear, vibrational state, control, round mark, image area, mathematical expectation, standard deviation, Wilcoxon criterion.

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