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Articles 1 - 8 of 8
Full-Text Articles in Engineering
Study Of Dynamic Characteristics Of The Mechanical Circuit Of The Developed Induction Inertial Vibration Transducer, Sulton Fayzullayevich Amirov, Asror Abdunabiyevich Shoimkulov
Study Of Dynamic Characteristics Of The Mechanical Circuit Of The Developed Induction Inertial Vibration Transducer, Sulton Fayzullayevich Amirov, Asror Abdunabiyevich Shoimkulov
Chemical Technology, Control and Management
The article examines the dynamic characteristics of the mechanical circuit of the developed induction vibration transducer. It is found that in the investigated transducers forced oscillations occur with the frequency of the input disturbing force, the amplitude of forced oscillations does not depend on the initial conditions and time, and in forced oscillations with damping there is always a shift of the oscillation phase compared to the phase of the input disturbing force. It is shown that the induction vibration transducer reproduces the measured vibrations with small distortions only in a relatively narrow frequency region at frequencies of the input …
Smart System For Wheat Diseases Early Detection, Rustam Baratov, Himola Sunnatillayeva, Almardon Mamatovich Mustafoqulov
Smart System For Wheat Diseases Early Detection, Rustam Baratov, Himola Sunnatillayeva, Almardon Mamatovich Mustafoqulov
Chemical Technology, Control and Management
This paper presents a smart system for early detection of wheat plant diseases in the vegetation period. The proposed smart system allows detecting three types of wheat diseases, particularly yellow rust, powdery mildew and septoria at early stage and significantly improves the soil and ecology by locally spraying harmful chemicals just to sickness plants. The proposed diagnostic program is created in the C++ programming language. The basic structure of the smart system consists of Raspberry PI 4 MODULE, Logitech HD Pro Webcam C920, buzzer, HC-SR04 distance sensor, DC motor driver, AC motor, power supply, relay and some digital devices.
Models Of Physical-Technical Effects In The Processes Of Changing Three-Phase Asymmetrical Currents Into A Signal In The Appearance Of Secondary Voltage, Timur Urunbayevich Kurbaniyazov
Models Of Physical-Technical Effects In The Processes Of Changing Three-Phase Asymmetrical Currents Into A Signal In The Appearance Of Secondary Voltage, Timur Urunbayevich Kurbaniyazov
Chemical Technology, Control and Management
This article presents research models, physical processes and mathematical expressions of the processes, quantities and parameters in the elements and structures of three-phase electromagnetic current transformers used in measurement and control systems of asymmetrical three-phase reactive power of power supply systems.
Mathematical Model Of An Industrial Robot Built On The Basis Of Linear Motion Mechatron Modules, Matyokubov Nurbek Rustamovich, Rakhimov Temurbek Omonboyevich
Mathematical Model Of An Industrial Robot Built On The Basis Of Linear Motion Mechatron Modules, Matyokubov Nurbek Rustamovich, Rakhimov Temurbek Omonboyevich
Chemical Technology, Control and Management
The use of Industry 4.0 technologies in modern production serves to increase production efficiency. Robots and robotic complexes with innovative intelligent control are widely used in industrial production. However, studying their mechanical part, linear motion mechatronic modules and control system is a complex object. The variety and complexity of control methods and operating modes negatively affects the operator's working time and production productivity. In such cases, it is necessary to improve control methods and develop technologies used in industry, including robots and robotic manipulators, which allow to perform short movements with high accuracy and speed. In the article, the mathematical …
Electromagnetic Current Transducer For Control Of Reactive Power Consumption Of An Asynchronous Motor From A Single-Phase Supply Of Renewable Energy Source, Llhomjon Xakimovich Siddikov, Saidikrom Saidmurodovich A'Zamov, Dilyorbek Doniyorbek O'G'Li Karimjonov
Electromagnetic Current Transducer For Control Of Reactive Power Consumption Of An Asynchronous Motor From A Single-Phase Supply Of Renewable Energy Source, Llhomjon Xakimovich Siddikov, Saidikrom Saidmurodovich A'Zamov, Dilyorbek Doniyorbek O'G'Li Karimjonov
Chemical Technology, Control and Management
In the world, the demand for electricity and its quality is increasing, in order to further increase the share of renewable energy sources, the reactive power that generates the magnetic field and current in asynchronous motors, which consumes more than 60% of the electricity generated from them and provided by them The research of electromagnetic current transformers, which allows controlling the consumption, evaluating the asymmetry and nonsinusoidal indicators of reactive power and energy, remotely sensing and measuring these quantities with appropriate devices, and converting them into a standard signal, is considered an urgent issue . The research results of the …
The Magnetic Chain Mathematical Models Of A New Angular Displacement Converter With A Variable Active Area Of A Movable Core, Sultan Faizullayevich Аmirov, Ulugbek Shukhratovich Mamadaliyev, Islom Azim Ugli Karimov
The Magnetic Chain Mathematical Models Of A New Angular Displacement Converter With A Variable Active Area Of A Movable Core, Sultan Faizullayevich Аmirov, Ulugbek Shukhratovich Mamadaliyev, Islom Azim Ugli Karimov
Chemical Technology, Control and Management
The article develops mathematical models of the magnetic chain of new differential type angular displacement transformer converter with a variable active area of the movable core, in which the width of the movable ferromagnetic core is a function of the angular displacement of the converter. In this case, the magnetic chain of the converter, divided into three characteristic (before the mobile ferromagnetic core, ferromagnetic core and after the ferromagnetic core) sections, is considered as a magnetic chain with distributed parameters. It is established that when the magnetic resistance of the magnetic chain steel part is not taken into account, the …
Power Amplifier Based On Composite Injection-Voltaic Transistors, Nodira Batirdjanovna Alimova
Power Amplifier Based On Composite Injection-Voltaic Transistors, Nodira Batirdjanovna Alimova
Chemical Technology, Control and Management
The problem of high-current radio engineering devices is related to the fact that the use of high-power transistors and other semiconductor devices is limited by such a phenomenon as a secondary breakdown, in which there is a sharp decrease in the voltage on the device with simultaneous internal current lacing, and the device fails. To solve the problem of secondary breakdown, schemes have been proposed that operate stably at reverse voltage values 4-5 times higher than usual and at power dissipation 2-3 times higher than the maximum allowable power for an individual device. The problem is proposed to be solved …
Using Of Parametric Nonlinear Lc-Circuits In Stabilized Transducers Of The Number Of Phases, Ivan Mikhaylovich Bedritsky, Kamila Komilovna Jurayeva, Laziz Kholboboyevich Bozorov
Using Of Parametric Nonlinear Lc-Circuits In Stabilized Transducers Of The Number Of Phases, Ivan Mikhaylovich Bedritsky, Kamila Komilovna Jurayeva, Laziz Kholboboyevich Bozorov
Chemical Technology, Control and Management
The use of nonlinear circuits of an autoparametric nature with inductive and capacitive elements for obtaining the necessary phase shifts in single-phase-three-phase converters is considered. The amplitude-phase relations between the stresses of windings located on different rods of a three-core core are obtained. The conditions under which it is possible to stabilize the stresses of the artificial phases of the Converter, as well as the phase shifts between them, are shown.