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Full-Text Articles in Engineering

Evolutionary Pattern And Control Technology Of Mine Pressure When Mining Face For Coal Pillars In Main Roadways Passing Through Abandoned Roadways, Li Zhenhua, Ren Ziyuan, Du Feng, Ren Hao, Wang Wenqiang Oct 2024

Evolutionary Pattern And Control Technology Of Mine Pressure When Mining Face For Coal Pillars In Main Roadways Passing Through Abandoned Roadways, Li Zhenhua, Ren Ziyuan, Du Feng, Ren Hao, Wang Wenqiang

Coal Geology & Exploration

Objective With the adjustment of the mining face layout in mines, the overburden roof of the mining face for coal pillar recovery is frequently difficult to control when the mining face passes through abandoned roadways. Methods To address this challenge, this study investigated the coal pillar mining face outside the No.2 panel in the Zhaogu No.2 Coal Mine in Henan Province, which passes through abandoned roadways. Using methods like theoretical analysis, numerical simulation, and in-situ tests, this study examined the composite structure of the mining face and the broken overburden of abandoned roadways, followed by simulation of the full-cycle evolutionary …

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Mechanisms And Control Of Rock Bursts In Goaf-Side Roadways Under The Condition Of Thick And Hard Roofs In The Xinjie Mining Area, Inner Mongolia, Liu Wenchao, Zhao Yixin, Guo Jihong Oct 2024

Mechanisms And Control Of Rock Bursts In Goaf-Side Roadways Under The Condition Of Thick And Hard Roofs In The Xinjie Mining Area, Inner Mongolia, Liu Wenchao, Zhao Yixin, Guo Jihong

Coal Geology & Exploration

Objective and Methods Rock bursts in mining roadways in deep coal mines under the condition of thick and hard roofs severely threaten the safe coal mining of the mining face. To meet this threat, this study, focusing on the No.3-1103 mining face auxiliary transport roadway, a goaf-side roadway, in a typical deep mine of the Xinjie mining area, Inner Mongolia, analyzed the external dominant factors and internal driving sources for frequent rock bursts in the goaf-side roadway. Assuming the mechanical characteristics of the rock beam-foundation system, this study constructed mechanical models under loading before roof fracturing based on …

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Effect Of Cadmium-Free Filler Metal On Mechanical Properties And Microstructure Of Pdc Cutters, Zhang Suhui, Yao Ningping, Liu Qingxiu, Liu Huan, Wang Dechuan Oct 2024

Effect Of Cadmium-Free Filler Metal On Mechanical Properties And Microstructure Of Pdc Cutters, Zhang Suhui, Yao Ningping, Liu Qingxiu, Liu Huan, Wang Dechuan

Coal Geology & Exploration

Objective PDC bits are critical components of geological support equipment and play a vital role in advancing technology and improving efficiency in the coal industry. Currently, PDC bits are brazed using silver filler metals containing cadmium, a toxic and polluting element. This study introduces the use of environmentally friendly, cadmium-free filler metals for brazing PDC bits. Methods The study investigates the wetting mechanism between brazing filler metals and base materials, utilizing Ag-Cu-Zn series brazing filler metals containing high silver and Sn, Mn and Ni, and only Ni for flame brazing of PDC cutters and steel. The shear strength of different …

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Spatial Surveying Characteristics And Reconstruction Method Of Millimetre Wave Radar In Complex Environment Of Coal Mine Roadway, Xue Xusheng, Yang Xingyun, Yue Jianing, Wang Chuanwei, Mao Qinghua, Ma Hongwei, Wang Rongquan Oct 2024

Spatial Surveying Characteristics And Reconstruction Method Of Millimetre Wave Radar In Complex Environment Of Coal Mine Roadway, Xue Xusheng, Yang Xingyun, Yue Jianing, Wang Chuanwei, Mao Qinghua, Ma Hongwei, Wang Rongquan

Coal Geology & Exploration

Objective Underground spatial surveying of coal mine is an important part of transparent geological modelling for coal mine. However, the complex environment of coal mine roadway, incomplete information acquisition, insufficient accuracy of sensed data and other difficulties need to be urgently solved. Methods First, the signal characteristics of millimeter wave radar under the complex environmental factors such as dust, water mist, surrounding rock structure, etc. were studied in depth, the millimeter wave signal attenuation model was established for the surrounding rock of coal mine roadway, and the influence mechanism of complex environmental factors for millimeter wave radar was comparatively analyzed. …

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Rock Burst Hazard Evaluation Of Coal Mining Face Based On A Gaussian Mixture Model, Cui Feng, Li Yifei, Jia Chong, Lu Changliang, He Shifeng, Zhang Suilin, Tian Mengqi Oct 2024

Rock Burst Hazard Evaluation Of Coal Mining Face Based On A Gaussian Mixture Model, Cui Feng, Li Yifei, Jia Chong, Lu Changliang, He Shifeng, Zhang Suilin, Tian Mengqi

Coal Geology & Exploration

Objective Deep insights into the probabilistic information contained in the energy distribution of acoustic emission (AE) or microseismic events are significant for the rock burst hazard evaluation of coal mining face. Methods This study investigated No.40111 mining face of the No.4 coal seam at the Dafosi Coal Mine in Shaanxi Province. Using physical simulation experiments with similar materials, theoretical analysis, and on-site monitoring, this study investigated the evolutionary patterns of AE monitoring data during coal mining and illustrated the physical meaning of fluctuations in the probability distribution of AE energy. Accordingly, this study proposed an index model for the rock …

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Advances In Research On The Evolution Of Trans-Scale Discontinuous Structures During The Creeps Of Strongly Disturbed Coals, Zhang Liang, Wang Laigui, Ren Ting, Li Xiangchun, Gao Ke, Li Haitao, Zhao Shankun Oct 2024

Advances In Research On The Evolution Of Trans-Scale Discontinuous Structures During The Creeps Of Strongly Disturbed Coals, Zhang Liang, Wang Laigui, Ren Ting, Li Xiangchun, Gao Ke, Li Haitao, Zhao Shankun

Coal Geology & Exploration

Objective and Methods Disasters associated with surrounding rocks in roadways, such as time-dependent deformation failure and creep-induced rock bursts, severely threaten deep mines in China. These disasters, coupled with the impacts of deep mining and structural changes, render it urgent to explore the evolutionary patterns of trans-scale discontinuous structures during the creeps of strongly disturbed coals. This study systematically reviews the scale effects of coals' mechanical properties, the discontinuous structures and multi-physics field effects of coals, and the long-term stability, creep evolutionary patterns, and mechanical models of coals. It highlights the close correlation between discontinuous structures (including their fractures and …

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Sedimentary Environments, Mechanical Properties, And Rock Burst Risk Identification Of Overburden In Deep Mines, Qiao Wei, Cheng Xianggang, Dou Linming, He Hu, Meng Xiangsheng, Ren Yangyang, Xiao Chong, Cai Jin Oct 2024

Sedimentary Environments, Mechanical Properties, And Rock Burst Risk Identification Of Overburden In Deep Mines, Qiao Wei, Cheng Xianggang, Dou Linming, He Hu, Meng Xiangsheng, Ren Yangyang, Xiao Chong, Cai Jin

Coal Geology & Exploration

Objective Disaster risk identification and prediction serve as a prerequisite for disaster control. An engineering geological environment is identified as the fundamental condition inducing dynamic disasters like rock bursts in mines. Exploring the sedimentary genetic mechanisms of engineering geological environments holds great significance for predicting rock burst risks. Methods With the Gaojiapu Coal Mine in the Binchang mining area, Shaanxi Province, as a case study, this study analyzed the engineering geological characteristics of rock masses under different sedimentary microfacies. Furthermore, it explored the deformation and failure characteristics of rocks in different sedimentary environments, along with the energy release patterns of …

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An Experimental Study Of The Evolutionary Patterns Of Mechanical Properties Of Coals Under Multiple Mining Disturbances, Ouyang Zhenhua, Liu Yang, Li Chunlei, Shi Qingwen, Li Wenshuai, Yi Haiyang, Qin Hongyan, Zhang Ningbo Oct 2024

An Experimental Study Of The Evolutionary Patterns Of Mechanical Properties Of Coals Under Multiple Mining Disturbances, Ouyang Zhenhua, Liu Yang, Li Chunlei, Shi Qingwen, Li Wenshuai, Yi Haiyang, Qin Hongyan, Zhang Ningbo

Coal Geology & Exploration

Objective In the mining process of coal mines, the cyclic loading and unloading effects caused by multiple mining disturbances can alter the mechanical properties of coals, serving as a significant cause of rock bursts. Revealing the response characteristics of crucial mechanical parameters and the damage mechanisms of coals can provide a basis for discriminating the impact-induced instability state, holding great significance for enhancing disaster prediction capabilities. Methods Quasi-static uniaxial cyclic loading and unloading experiments and the dynamic impact loading experiments on large-size coal-like specimens were combined to accurately capture the stress, strain, and acoustic emission responses during the experiments, thoroughly …

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Exploring The Evolutionary Patterns Of Stress Field In Coal Seams During Water Drainage In Overburden Confined Aquifers Based On Charge Monitoring, Wang Gang, Yu Xiaojie, Wang Aiwen, Xiao Xiaochun, Wang Yong, Ding Xin, Wang Weibin, Xu Zengjun, Du Lulu Oct 2024

Exploring The Evolutionary Patterns Of Stress Field In Coal Seams During Water Drainage In Overburden Confined Aquifers Based On Charge Monitoring, Wang Gang, Yu Xiaojie, Wang Aiwen, Xiao Xiaochun, Wang Yong, Ding Xin, Wang Weibin, Xu Zengjun, Du Lulu

Coal Geology & Exploration

Objective Deep coal mining areas in regions such as Inner Mongolia, Shaanxi, Shandong, and Gansu in China feature intricate hydrogeological conditions, which lead to substantial water drainage from roofs and increasingly prominent rock bursts induced by water drainage in overburden confined aquifers. This study investigated the evolutionary patterns of the stress field in coal seams during the water drainage of overburden confined aquifers. Methods By combining the laboratory charge induction experiments of coals under graded loading with charge monitoring pre- and post-water drainage from a roof in a coal mine, this study systematically examined the variations of induced charge in …

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Evolutionary Characteristics Of Microcracks In Rocks Under Weak Dynamic Disturbance And Disaster Prevention And Control, Jiang Mingwei, Liang Yuntao, Feng Wenbin, Li Haitao, Zhou Rui, Guo Baolong, Liu Yang, Ma Ju Oct 2024

Evolutionary Characteristics Of Microcracks In Rocks Under Weak Dynamic Disturbance And Disaster Prevention And Control, Jiang Mingwei, Liang Yuntao, Feng Wenbin, Li Haitao, Zhou Rui, Guo Baolong, Liu Yang, Ma Ju

Coal Geology & Exploration

Objective High stress with superimposed weak dynamic disturbance serves as a critical factor including rock bursts. However, the microcrack propagation characteristics and energy dissipation pattern of rocks under different disturbance amplitude, frequencies, and unloading ranges remain unclear, leading to a lack of technical support for rock burst prevention and control.Methods Based on the true triaxial unloading dynamic disturbance tests, this study analyzed the instability failure patterns of deep surrounding rocks under different disturbance amplitude (5, 10 MPa), frequencies (4, 10 Hz), and triaxial stress unloading (0, 12 MPa). Moreover, this study examined the characteristics of microcracks in rocks using …

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Advances In Research On Stratigraphic Characteristic Parameter Modeling And Safety Early Warning For Deep Geological Drilling Processes, Yang Yulong, Cao Weihua, Gan Chao, Li Yupeng, Wu Min Oct 2024

Advances In Research On Stratigraphic Characteristic Parameter Modeling And Safety Early Warning For Deep Geological Drilling Processes, Yang Yulong, Cao Weihua, Gan Chao, Li Yupeng, Wu Min

Coal Geology & Exploration

Significance As the new round of national exploration & development planning continues, resource exploration is advancing toward the deep Earth. However, deep strata exhibit diverse rock types, which complicate the measurement of rock mechanical parameters. Furthermore, the harsh environments of these strata, characterized by high temperatures, high pressures, and high in-situ stress, are prone to induce downhole accidents like drilling tool failure, wellbore collapse, loss of circulation, and well kicks, posing challenges to geological drilling. Advances Aiming at the perception and modeling of complex geological environments, this study reviews the existing studies on the modeling of stratigraphic characteristic parameters from …

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Development Of A Fuzzy Controller For Temperature Control In Phosphate Ore Beneficiation Process., D.P. Mukhitdinov, O.U. Sattarov, Sh.O. Annakulov Oct 2024

Development Of A Fuzzy Controller For Temperature Control In Phosphate Ore Beneficiation Process., D.P. Mukhitdinov, O.U. Sattarov, Sh.O. Annakulov

Chemical Technology, Control and Management

The paper presents the results of the obtained research, taking into account the dynamics of the thermal process in order to determine the parameters of the equipment and the choice of the optimal law of temperature regulation, the results of the process of temperature regulation in the process of roasting phosphate ores in the tower furnace are presented. The main purpose was to enhance the quality of phosphate ores and reduce energy consumption by using a fuzzy PID controller to regulate the temperature during the burning process of phosphate ores in a tower furnace. The parameters of the developed model …

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Improving Methods To Ensure Accuracy In The Machining And Repair Of Aircraft Parts Using Multi-Parametric Control And Management Systems, A.M. Abduvaliev, Sh.B. Mamirov Oct 2024

Improving Methods To Ensure Accuracy In The Machining And Repair Of Aircraft Parts Using Multi-Parametric Control And Management Systems, A.M. Abduvaliev, Sh.B. Mamirov

Chemical Technology, Control and Management

This article examines algorithms for the movement of measuring heads (MH) on controlled component surfaces on numerically controlled (NC) machines. Algorithms for surface inspection are developed based on the installation error range of the components. An algorithm for moving the measuring head in hole inspection, accounting for component installation error, is presented. The inspection time is determined to identify optimal movement algorithms for measuring heads on controlled surfaces. A method for inspecting component planes is presented, along with formulas for calculating the inspection time of both plane and hole measurements, considering installation error. Algorithms for plane inspection based on various …

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Methods For Applying And Optimizing Digital Control Systems In The Process Of Extracting Vegetable Oils, Mirhalil Agzamovich Ismailov, Matluba Abduhalimovna Isaqova Oct 2024

Methods For Applying And Optimizing Digital Control Systems In The Process Of Extracting Vegetable Oils, Mirhalil Agzamovich Ismailov, Matluba Abduhalimovna Isaqova

Chemical Technology, Control and Management

Nowadays, the advancement of science and technology has led to more complex production processes and management systems, requiring in-depth research into their structure and interconnections. A key method for such research is mathematical modeling, which has become more prevalent with the development of information technologies and simulation modeling. This study focuses on building a simulation model for oil production processes, particularly cottonseed oil extraction, addressing problem formulation, modeling stages, and the scientific and practical significance. The model plays a vital role in automating production, improving product quality, and increasing efficiency. The mathematical model of oil extraction helps optimize the process …

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Analysis Of Standardization Services In An Organization And Standards Development Process Model, F.F. Fattoev, Sh.A. Turaev, A.A. Abdurakhmanov Oct 2024

Analysis Of Standardization Services In An Organization And Standards Development Process Model, F.F. Fattoev, Sh.A. Turaev, A.A. Abdurakhmanov

Chemical Technology, Control and Management

This article explores the economic significance of standardization within the industrial sector, highlighting its role in enhancing competitiveness and innovation in the Republic of Uzbekistan. Standardization, implemented across various levels (state, industry, and organizational), provides a framework for ensuring quality, safety, and technical consistency across production processes, products, and infrastructure. The article examines how standardization services, even if not separate organizational units, contribute to public interest by fostering consistency and productivity through the interdisciplinary technical coordination (TSC) system. Additionally, the research considers mathematical methods for developing standards, offering insights into how structured standardization can support automation, increase labor productivity, and …

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Development Of A Mathematical Model For An Intelligent Process Control System In Brewing Industry, A.N. Yusupbekov, M.Sh. Yusupov Oct 2024

Development Of A Mathematical Model For An Intelligent Process Control System In Brewing Industry, A.N. Yusupbekov, M.Sh. Yusupov

Chemical Technology, Control and Management

The paper deals with developing a mathematical model for a system of intelligent process control in brewing, focusing on the critical parameters of fermentation: temperature, pressure, and pH level. Mathematical models of the dynamics of the process of each of the parameters are given based on exponential dependencies, which allow for the description of the change of these values over time. The possibility of using PID regulators, neural networks, and fuzzy logic to control the process under study and the modeling that allows the optimization of beer production, improving its quality and reducing costs.

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Intensification Of Convective Heat Transfer In Tubular-Grid Packings Of Rectification Columns, Ainagul Abdiualievna Nurillaeva, Elbek Tulkinovich Mavlonov, Khabibulla Sadullaevich Nurmukhamedov, Nazora Sharofovna Khudoiberdieva Oct 2024

Intensification Of Convective Heat Transfer In Tubular-Grid Packings Of Rectification Columns, Ainagul Abdiualievna Nurillaeva, Elbek Tulkinovich Mavlonov, Khabibulla Sadullaevich Nurmukhamedov, Nazora Sharofovna Khudoiberdieva

Chemical Technology, Control and Management

The paper presents the results of an experimental study on the intensification of convective heat exchange in tubular-lattice packings of rectification columns. Currently, in various sectors of the country's economy, either plate or packed rectification columns are mainly used, and combined devices are not used. Therefore, in this paper, studies were conducted on the intensification of the rectification process by using tubes with spiral turbulators with their staggered and corridor placement in the tube sheet. Analysis of the experimental data showed that the pitch of the turbulators s/deb significantly affects the heat exchange process. At the pitch of the spiral …

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Comparative Analysis Of Not Logic Elements Implemented On Mosfet Transistors With Their Analogs Implemented On Bipolar Transistors, Nodira Batirdjanovna Аlimova, Nilufar Baxtiyorovna Gulyamova Oct 2024

Comparative Analysis Of Not Logic Elements Implemented On Mosfet Transistors With Their Analogs Implemented On Bipolar Transistors, Nodira Batirdjanovna Аlimova, Nilufar Baxtiyorovna Gulyamova

Chemical Technology, Control and Management

This paper presents a comparative analysis of existing 'NOT' logic elements (LE) based on MOSFET transistors and their analogs using bipolar transistors. It was found that the 'NOT' LE circuit implemented with n-MOS transistors is analogous to the 'NOT' LE implemented with n-p-n bipolar transistors, i.e., integral-injection logic (I2L). The circuit of the LE"NOT" made on p-MOS transistors is an analog of the LE"NOT» made on bipolar transistors of the p-n-p structure. The methodologically significant similarity between the LE"NOT," implemented on complementary MOSFET transistors, and the LE" NOT," implemented on complementary bipolar transistors (BT), using the injection-voltaic effect and representing …

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Automation Of Medical Facilities, Automation Of Diagnostic Processes For Intelligent Primary Diagnosis Of Diseases Of The Oral Cavity., Otabek Ismailov, X.F. Temirova Oct 2024

Automation Of Medical Facilities, Automation Of Diagnostic Processes For Intelligent Primary Diagnosis Of Diseases Of The Oral Cavity., Otabek Ismailov, X.F. Temirova

Chemical Technology, Control and Management

A mathematical machine learning model for dental disease diagnosis plays an important role in medicine with high accuracy, speed, and personalization capabilities. This allows for increased efficiency not only for patients but also for medical personnel. For this reason, in this article, an improved mathematical model has been developed to effectively detect dental diseases.

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Organization And Design Of Smart Greenhouse Models And Using Types Of Energies, Nodirbek Rustambekovich Yusupbekov, Dong Zhang, Muso Berdiyor Ugli Allanov Oct 2024

Organization And Design Of Smart Greenhouse Models And Using Types Of Energies, Nodirbek Rustambekovich Yusupbekov, Dong Zhang, Muso Berdiyor Ugli Allanov

Chemical Technology, Control and Management

In this article, you can see the models of modern greenhouses, reducing water consumption, parameters and some factors to be considered for automated greenhouses, proposed models for organizing greenhouses, and the Smart Greenhouse model is written in the Siemens Simatic S7 1200 controller by using the TIA portal program.

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Investigation Of Magnetic Circuits Of Measuring Transducers With A Distributed Longitudinal Excitation Winding, Javharbek Fayzullayev, Kamika Jurayeva, Usmon Mukhtorov Oct 2024

Investigation Of Magnetic Circuits Of Measuring Transducers With A Distributed Longitudinal Excitation Winding, Javharbek Fayzullayev, Kamika Jurayeva, Usmon Mukhtorov

Chemical Technology, Control and Management

The article examines the laws of distribution of magnetic voltage and magnetic flux in magnetic circuits of measuring transducers with distributed resistance parameters of long ferromagnetic rods and magnetic capacitance between them and a transverse distributed excitation winding using the example of a magnetic circuit of a new magnetically elastic force converter. It is established that in such magnetic circuits, the magnetic voltage changes its sign when passing through the section of the magnetic neutral, and the magnetic flux in the magnetic neutral has a maximum value, with a fixed value of the length of the distributed excitation winding, the …

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Selecting The First Approach Speed Of The Igm-2k Measuring Head When Controlling The Installation Error Of Housing Parts On Tncd Machines, A.M. Abduvaliev Oct 2024

Selecting The First Approach Speed Of The Igm-2k Measuring Head When Controlling The Installation Error Of Housing Parts On Tncd Machines, A.M. Abduvaliev

Chemical Technology, Control and Management

Theoretical analysis and experimental studies have been conducted on the automatic control process for installation errors of body parts using the IGM-2K measuring head on numerically controlled machines. The results of the experimental study are presented, detailing the actual values of control errors and the time costs associated with automatic approach methods using the IGM-2K for checking the base points of body part surfaces on these machines. An algorithm for selecting the first approach speed F1 for IGM-2K has been developed. In accordance with the developed algorithm, the optimal values F1 are determined for a different range of installation errors …

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Control Algorithms With A Predictive Model Of Dynamic Objects Of Continuous And Semi-Continuous Industrial Production, Sh.M. Gulyamov, M.Yu. Doshchanova Oct 2024

Control Algorithms With A Predictive Model Of Dynamic Objects Of Continuous And Semi-Continuous Industrial Production, Sh.M. Gulyamov, M.Yu. Doshchanova

Chemical Technology, Control and Management

The paper presents methods and algorithms for automatic control based on predictive models of dynamic objects in continuous and semi-continuous industrial production. The approach under consideration allows further improvement of scientific foundations and formalized methods for designing the implementation of highly efficient systems for advanced control of complex technological processes and industrial production in real-time.

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Improvement Of Methods And Means For Increasing The Accuracy Of Instruments For Measuring The Flow Of Liquids And Gases, U.A. Ruziyev, E.E. Ortikov Oct 2024

Improvement Of Methods And Means For Increasing The Accuracy Of Instruments For Measuring The Flow Of Liquids And Gases, U.A. Ruziyev, E.E. Ortikov

Chemical Technology, Control and Management

The work is devoted to the issue of increasing the accuracy of liquid flow measurement devices, containing a primary measuring transducer for measuring the pressure drop in a narrowed section of a pipeline, temperature sensors, a microprocessor, non-volatile memory, and a communication interface. To reduce uncertainty, the liquid flow measurement temperature compensation of the flow-measuring transducer is performed based on the readings of the temperature sensor installed in the measurement environment. The secondary transducer readings are calibrated based on the temperature sensor readings installed in the computing unit of the measuring device. For reliable measurement of the gas-liquid media flow, …

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Generalized Structural-Parametric Conceptual Model Of The Electromagnetic Mechatronic Module, N.R. Matyokubov, T.O. Rakhimov Oct 2024

Generalized Structural-Parametric Conceptual Model Of The Electromagnetic Mechatronic Module, N.R. Matyokubov, T.O. Rakhimov

Chemical Technology, Control and Management

This article is dedicated to developing a generalized structural-parametric conceptual model of the electromagnetic mechatronic module. The design of a mechatronic module based on an electromagnetic linear motor, which performs reciprocating movements in space along different coordinates simultaneously, is presented. This module is used to enhance the functional capabilities of mechatronic systems and robotic complexes employed in modern automotive, textile, mining, metallurgy, and energy industries. It also serves to improve technical characteristics such as operational accuracy and speed. Based on this design, a computational scheme has been constructed using a van-equivalent T-shaped four-pole circuit model of the mechatronic module. It …

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Identification Of Acoustic Emission Signal Measuring Channels, Miraziz Vorisovich Sagatov Oct 2024

Identification Of Acoustic Emission Signal Measuring Channels, Miraziz Vorisovich Sagatov

Chemical Technology, Control and Management

When developing design monitoring systems based on the acoustic emission method, the dynamic properties of the entire AE signal path, which are related to fast processes, are important. The corresponding mathematical models must be used to consider the dynamics of the measurement system channels. In addition, it is necessary to provide the possibility of a detailed analysis of acoustic emission signals with the definition of a certain set of their parameters, such as amplitude, pulse steepness, duration, etc. The vector of such parameters is a signal portrait that can be used to solve monitoring and diagnostics problems. Providing for the …

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Research Of Electromagnetic Interference Effects On The Operational Stability Of A Measuring Device, Erkin Uljaev, Elyor Faxriddinovich Khudoyberdiev, Utkirjon Murodillayevich Ubaydullayev, Shohrux Nurali O‘G‘Li Narzullayev Oct 2024

Research Of Electromagnetic Interference Effects On The Operational Stability Of A Measuring Device, Erkin Uljaev, Elyor Faxriddinovich Khudoyberdiev, Utkirjon Murodillayevich Ubaydullayev, Shohrux Nurali O‘G‘Li Narzullayev

Chemical Technology, Control and Management

The article explores the impact of electromagnetic interference on the performance of measuring devices used in industrial environments. An experimental analysis of sensor parameters and the influence of electromagnetic fields on their accuracy was conducted. Testing methodologies utilizing shielding technologies were developed to enhance interference resistance. The results confirm the efficiency of protective shielding in ensuring stable device operation under various interference sources.

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Method Of Selecting Elements And Designing Intelligent Optoelectronic Converters, Yuriy Gennadiyevich Shipulin, Zebiniso Akmalovna Zayniddinova, Rustam Mukhamadjonovich Rakhimov Oct 2024

Method Of Selecting Elements And Designing Intelligent Optoelectronic Converters, Yuriy Gennadiyevich Shipulin, Zebiniso Akmalovna Zayniddinova, Rustam Mukhamadjonovich Rakhimov

Chemical Technology, Control and Management

The article is devoted to the method of selecting elements and designing intelligent optoelectronic displacement transducers. It is proposed that morphological tables be used to expand the principles of building intelligent multifunctional optoelectronic converters. Choosing the optimal structure of intelligent multifunctional optoelectronic converters allows you to use a combination of advanced techniques to improve the design and use the morphological matrix of the main elements to choose a new structure of elements and designs of intelligent multifunctional optoelectronic converters.

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Diagnosis Of Malfunctions In Servo Systems Considering Dynamic, Khurshid Salim Ugli Turaev Oct 2024

Diagnosis Of Malfunctions In Servo Systems Considering Dynamic, Khurshid Salim Ugli Turaev

Chemical Technology, Control and Management

This study analyzes methods of fault-tolerant control and automatic fault diagnosis in servo systems considering dynamic redundancy. The application of diagnostic and fault-tolerant control methods is critical for addressing reliability and safety challenges in servo systems. Dynamic redundancy ensures the ability to respond quickly to faults in individual system components and minimizes their impact on overall system performance. The research examines approaches to fault detection, ensuring continuous operation of automated systems, and methods for their effective resolution. The practical significance of the study lies in the use of modern technologies to enhance the performance and fault tolerance of servo systems.

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Methods Of Synthesis Of Regulators For Nonlinear Dynamic Systems, O.O. Zaripov, D.A. Akhmedov Oct 2024

Methods Of Synthesis Of Regulators For Nonlinear Dynamic Systems, O.O. Zaripov, D.A. Akhmedov

Chemical Technology, Control and Management

Methods and algorithms for the synthesis of regulators for nonlinear dynamic systems are given, based on various approaches to the formation of a control device. We considered synthesis methods based on phase space, Lyapunov function method, vibration control, feedback linearization method, velocity gradient method, lag feedback method, adaptive, robust, intelligent approaches, fuzzy logic, systems with a variable structure, etc. All the methods of synthesis of nonlinear regulators discussed above give a solution to the problem only for rather narrow classes of objects. Therefore, the problem of building regulators for nonlinear systems in many cases has not yet been solved.

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