Halytsky V. Methods and models for reducing dynamic errors when measuring the angular velocity of moving objects

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0421U102444

Applicant for

Specialization

  • 05.11.01 - Прилади та методи вимірювання механічних величин

13-05-2021

Specialized Academic Board

К 26.062.18

National Aviation University

Essay

The following scientific results are obtained in the dissertation: For the first time the equations of measurements of angular velocity of gyroscopic stabilization systems in the control unit taking into account various conversion factors are deduced, on the basis of these equations the conditions of autocompensation are deduced that reduces an error of measurement of angular velocity. The model of the shock-absorber which allows to reduce influence of blows and vibrations is developed. The model differs from similar ones by smaller dimensions but more elastic characteristics and allows to reduce the influence of destabilizing factors.A method for reducing the impact of temperature errors acting on the sensitive element during its operation has been developed. Models and methods of calculation of elastic characteristics of the elastic shock-absorber are developed. For the first time a model of compensation of temperature errors of the sensor of moments of the pendulum accelerometer of compensation type was developed, which allowed to provide accuracy of the device when working as a part of difficult gyroscopic platforms. The practical significance of thesis results are on the basis of the obtained equations for measurements the method of automatic control of a signal for reduction of influence of errors that gives the chance to increase accuracy of measurement of acceleration is negatively improved by 8 %. Unlike existing analogues, the automatic control system is stable in a wide range of measurements of the device. A model was built for the first time and experimental studies of the SE balancing technique were carried out using the method of laser evaporation of material. For the first time, a method was created to reduce the impact of temperature errors acting on the sensitive element during its operation. A stand was made for metrological certification and inspection of devices and reproduction of real loads arising in gyrostabilized platforms, which helped to determine the accuracy of the speed of 1.7 times compared to analogues. Experimental studies have shown that due to the introduction of mathematical models and ACS error correction in the control unit was able to achieve a significant reduction in complexity in the manufacture of components.

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