UDC 629. 113. 003, 621.85
DOI 10.36461/NP.2025.75.3.002

ANALYSIS OF PRESSURE CHANGES IN THE DIAGNOSIS OF HYDRAULIC UNITS USING AN ANALOG-TO-DIGITAL ADAPTER
N.I. Sergeev, postgraduate student; A.S. Ivanov, Candidate of Engineering Sciences, Associate Professor;
V.V. Lyandenbursky, Doctor of Engineering Sciences, Professor,
G.S. Tsiganov student, M.V. Bikmaev student
Federal State Budgetary Educational Institution of Higher Education "Penza State Agrarian University", Penza, Russia, tel. 8(8412) 65-82-42; е-mail: This email address is being protected from spambots. You need JavaScript enabled to view it. Russia

Hydraulic systems are an integral part of many technical objects, including agricultural tractors. To increase the efficiency of complex and expensive technical systems, which include hydraulic drives, it is necessary not only to improve the design, but also to ensure the required pressure parameters in the circuits of these systems [1-5, 8], which depend on the elasticity modulus of the fluid used.
When developing working machines, this can be achieved by expanding theoretical analysis to obtain the most accurate information about the technical condition of hydraulic drives, which will make it possible to control their technical condition using forecasting methods and timely elimination of failures and malfunctions.
This will lead to an increase in the technical readiness of the equipment, due to a reduction in repair work related to the assembly and disassembly of hydraulic drive elements from the machine.
The applied analog and mathematical models should provide a standard error in determining the parameter with the possibility of subsequent processing and analysis of the results, transfer functions of individual processes [7, 9-11].
The article describes an analog-to-digital adapter and a program for measuring pressure in vehicle hydraulic circuits to assess changes in high- and low-pressure circuits. The results of theoretical studies are presented, showing an increase in pressure in the high-pressure circuit, which occurs due to wear of the piston seal of the hydraulic cylinder and leakage of the working fluid from the high-pressure cavity into the low-pressure cavity.
Keywords: hydraulic drive, hydraulic cylinders, hydraulic valves, spool, circuit, pressure, analog-to-digital adapter.

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