AUTOMATED DIAGNOSTIC SYSTEM OF THE TECHNICAL CONDITION OF THE OBJECT USING THE AGGREGATED CLASSIFIERS

2020 ◽  
Author(s):  
V. N. Klyachkin ◽  
◽  
D. A. Zhukov ◽  
Keyword(s):  
Diagnostic System ◽  
Technical Condition

scholarly journals Diagnostics of the technical condition of transformers according to the color characteristics of transformer oil

2019 ◽  
Vol 124 ◽  
pp. 05001
Author(s):  
D.M. Valiullina ◽  
Yu.K. Ilyasova ◽  
V.K. Kozlov
Keyword(s):  
Aromatic Compounds ◽  
Optical Radiation ◽  
Colloidal Particles ◽  
Early Stage ◽  
Diagnostic System ◽  
Technical Condition ◽  
Acid Number ◽  
Transformer Oil ◽  
Stage Of Development ◽  
Initial Stage

This paper presents the results of a research of transformer oil in a visual way. The high information content of the optical radiation scattered and transmitted through the oil is shown. By the color of the radiation, it is possible to determine such characteristics of the oil as acid number, dielectric loss tangent, the presence of colloidal particles, their concentration and size, as well as the presence of aromatic compounds in the oil, changes in their molecular composition and concentration. By the presence of aromatic compounds and colloidal particles, it is possible to visually state the development of thermal and discharge defects in a transformer. This diagnostic system allows to assess the condition of power transformers without shutting them down, make decisions on their further operation without the use of expensive equipment and at the initial stage to identify the changes that are significant and necessary. This is due to the high cost of the transformer, its importance in terms of the reliability of power supply to consumers, the complexity of determining damages and defects at an early stage of development.

scholarly journals Technical condition diagnostics and material testing of critical points of steel structure of rotary excavators and depositors

Tehnika ◽  
2021 ◽  
Vol 76 (4) ◽  
pp. 457-464
Author(s):  
Merim Aličić ◽  
Almis Aličić ◽  
Samir Softić
Keyword(s):  
Diagnostic System ◽  
Steel Structure ◽  
Steel Structures ◽  
Material Testing ◽  
Technical Condition ◽  
Open Pit ◽  
Coal Production ◽  
Surface Mines ◽  
The Subject ◽  
Continuous Work

In Bosnia and Herzegovina, significant coal production takes place in surface mines, which requires continuous work on the maintenance of machines and devices for surface exploitation. The complexity of the construction of rotary excavators, their high cost, and high costs of failure and maintenance, indicate the need for research and development of an efficient diagnostic system. The subject of research are the steel structures of three rotary excavators SRs 402 15 / 1.5 (piece 3) and the depositor A2RsB8500.60 (piece 1), which are in the process of coal production and overburden, at the open pit mine "Dubrave" in Dubrave JP Elektroprivreda BiH ZD Rudnici "Kreka" in Tuzla.

ABOUT DEPTH OF DRAINING ON SALTED LAND

2018 ◽  
pp. 5-8
Author(s):  
A Ramazanov
Keyword(s):  
Experimental Research ◽  
Continuous Monitoring ◽  
Diagnostic System ◽  
Scientific Work ◽  
Technical Condition ◽  
Reliable Operation ◽  
Improve Performance ◽  
Technical Status ◽  
Pumping Units ◽  
The Cost

One of the main requirements for reliable operation of pumping units is continuous monitoring, analysis of technical condition and timely troubleshooting. Development of modern and perfect ways to determine the technical status of pumping units to prevent the occurrence of malfunctions. This article presents the results of experimental research carried out in the laboratory on the basis of scientific work. Using the recommended diagnostic system makes it possible to assess the technical condition, improve performance and reduce the cost of repairing pumping units.

Calculation and Diagnostic System of the Technical Condition of Grounding Devices of Electrical Installations

2021 ◽  
pp. 64-75
Author(s):  
Ivanova Viliya Ravilevna ◽  
Ivanov Igor Yurevich ◽  
Kiselev Igor Nikolaevich
Keyword(s):  
Diagnostic System ◽  
Technical Condition

scholarly journals Measurement and Diagnostic System for Marine Engines

2019 ◽  
Vol 49 (3) ◽  
pp. 33-48 ◽  
Author(s):  
Adam Charchalis
Keyword(s):  
Research And Development ◽  
Measuring Equipment ◽  
Diagnostic System ◽  
Technical Condition ◽  
Development Work ◽  
Maintenance And Repair ◽  
Maintenance System ◽  
Marine Engines ◽  
Marine Engineering ◽  
Ship Operation

Abstract The Scheduled Maintenance System allows ship-owners and operators to plan, carry out and document the maintenance and repair of equipment and mechanisms on board the ship at intervals in accordance with the class requirements imposed by the Classification Societies and the manufacturer of the equipment. In order to develop the research capabilities of the Faculty of Marine Engineering of Gdynia Maritime University, a Measurement and Diagnostic System has been developed to assess the technical condition of machinery and equipment in operation on board the ship. Modernization of measuring equipment, significantly expanded the research capabilities, which resulted in increasing the scope, improving quality, and speeding up the research and development work in the field of safety of operation and diagnostics of engine rooms and ship operation.

scholarly journals THE BULDING A KNOWLEDGE BASE AND ITS INTERNAL RULES FOR AN EXPERT SYSTEM FOR DIAGNOSTIES A GAS PUMPING UNIT

2018 ◽  
pp. 5-17
Author(s):  
N. G. Shyrmovska ◽  
G. I. Levitska ◽  
Ya. I. Zayachuk ◽  
I. R. Mykhajluk
Keyword(s):  
Expert System ◽  
Knowledge Base ◽  
General Structure ◽  
Diagnostic System ◽  
Relevant Information ◽  
Technical Condition ◽  
Pumping Unit ◽  
Gas Pumping ◽  
Vibration Parameters ◽  
Gas Pumping Unit

The article proposes the development of an expert diagnostic system, namely, the construction of a knowledge base and internal rules for assessing the condition of the gas pumping unit by the parameters of vibration. The choice of environment for the implementation of the expert system was carried out. On the basis of the performed researches of failures and defects of the gas pumping unit, the method of diagnosing those defects were proposed, and also the conditions to determine the normal state of the functioning of the installation were formulated. When developing the expert system, a general structure, the construction of a knowledge database, and the construction of internal rules for the diagnosis of the gas pumping unit were proposed. The rules of construction of the expert systems with variable values ​​were considered. The determination of the technical condition of the unit using vibration parameters is made both by the content of the relevant information at the time, and on the basis of analysis of its change over the time. An expert system was offered that provides an analysis of transitional states of control objects, also describes the knowledge base and the number of rules that are used for conclusions of the expert system.

scholarly journals Vibration Bearing Diagnostic System Machine Learning

2019 ◽  
Vol 9 (1) ◽  
pp. 3735-3741
Keyword(s):  
Machine Learning ◽  
Geometric Model ◽  
Diagnostic System ◽  
Technical Condition ◽  
Normal Operation ◽  
Computational Costs ◽  
System A ◽  
Maintenance Systems ◽  
The Time Domain ◽  
Vibration Parameters

The article shows the possibility of using a mathematical model of a bearing with various types of defects for machine learning of the vibration diagnostic system. A plane geometric model of a radial bearing with two degree of freedom is considered in detail, a system of differential equations describing the nature of the motion of moving masses in the mechanical bearing system is presented. A formula is obtained for calculating the total kinematic disturbance, the calculation of which is associated with significant computational costs. The article proposes an alternative calculation method, namely, modeling the profile of kinematic disturbances in the time domain, which will minimize computational costs. The adequacy of the proposed method is confirmed by calculations in Matlab and comparison with experimental data. The development of equipment maintenance systems for the actual technical condition is relevant as in the case of operation of facilities of increased danger Gerike, and in the case of the operation of expensive equipment Pisarev and Vaganov, where the diagnosis with disassembling the machine leads to large financial losses. Diagnostics of equipment by vibration parameters allows fixing defects in the early stages during normal operation without the need to disassemble the units and take them out of service.

scholarly journals Assessment of Technical Condition and Readiness of Pump Units by Diagnostic Methods

2021 ◽  
Vol 320 ◽  
pp. 04010
Author(s):  
M. M. Muhammadiev ◽  
O. Y. Glovatsky ◽  
R. R. Ergashev ◽  
N. R. Nasyrova ◽  
F. S. Saidov
Keyword(s):  
Working Conditions ◽  
Diagnostic System ◽  
Technical Condition ◽  
Diagnostic Methods ◽  
Operating Costs ◽  
Power Equipment ◽  
Time Intervals ◽  
Pumping Stations ◽  
Pumping Units ◽  
The Cost

The article presents the developed methods and models for analyzing the dynamic indicators of pumping units for different time intervals of their state during operation. The main tasks of assessing the technical condition are to identify deviations from design solutions, the presence of damage, defects in pump structures that can cause accidents. The results of the development of a diagnostic system for pumping units at pumping stations are presented. The working conditions of the connecting links of the main pumping and power equipment and its diagnostics are considered. The introduction of the proposed diagnostic system will lead to a reduction in operating costs of pumping units and the cost of their maintenance.

scholarly journals Analysis of Diagnostic Methods and Energy of Production Systems Drives

Processes ◽  
2021 ◽  
Vol 9 (5) ◽  
pp. 843
Author(s):  
Ivan Kuric ◽  
Ivana Klačková ◽  
Yury Rafailovich Nikitin ◽  
Ivan Zajačko ◽  
Miroslav Císar ◽  
...  
Keyword(s):  
Fuzzy Inference ◽  
Diagnostic System ◽  
Sensory Systems ◽  
Technical Condition ◽  
Repair Time ◽  
Diagnostic Methods ◽  
Technical Diagnostics ◽  
Inference System ◽  
Diagnostic Parameters ◽  
Industrial Enterprises

This article deals with solving the urgent scientific problem of the diagnostics of drives of technological robotized workplaces with support of sensors. The dependence of diagnostic parameters on the technical state of drives of automated technological systems, which is of great economic importance for industrial enterprises, is being investigated. Diagnostic models have been developed based on sensory systems to diagnose drive models of technological robotized workplaces. The use of these models may also include monitoring systems in which it is possible to build a system for identifying detected changes. These systems identify many contradictory changes and thereby reduce the false alarm frequency of monitoring sensory systems. Numerous methods for solving technical diagnostics problems are often based on methods based on mathematical models describing work processes, as well as on spectral analysis of measured parameters, such as vibrations, noise, and electric current. A fuzzy inference system for assessing the technical condition, a system for estimating the residual resource of drives, and asystem for calculating diagnostic intervals based on fuzzy knowledge have been developed. Based on the historical trend of the diagnostic parameters, the intelligent diagnostic system determines the current technical condition of the actuator and predicts future technical condition changes, determines the remaining service life and the time intervals for diagnostics. The analysis of the time spent on planned preventive maintenance of technological equipment makes it possible to conclude that, after the modernization of equipment in 2018, the repair time was reduced from 350 h to 260 h per year (26%). Since 2019, there is a tendency to increase repair time by 30 h each year.

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