Electrical Schematic Diagram Research Articles

AUTOMATED REHABILITATION TOOL FOR THE LOWER LIMB

An urgent problem today is the need to develop rehabilitation tools that can be used by the patient in self-care mode. Modern methods of rehabilitation of the lower limb are often limited by the availability of specialists and require constant supervision by medical personnel. The problem of incorrect foot posture can lead to numerous health complications, such as flat feet, which can be associated with diabetes and coronary heart disease. Therefore, the development of a tool for self-diagnosis of pressure on different areas of the foot and control of correction is an urgent task. The availability of this tool will contribute to effective rehabilitation in case of disorders of the lower limbs, improve posture, and slow down the progression of a number of diseases. Previous studies confirm the importance of active participation of patients in the rehabilitation process. The trend toward self-correction requires integrated technologies to provide real-time feedback. The main goal is to create the ability to adjust the position of the foot in shoes using data processing and visualiza-tion on a mobile application. The work presents the development of an automated rehabilitation tool for the lower limb, namely the electrical schematic diagram for the tool. The device uses advanced data processing methods to accurately determine the position of the foot. The analysis of the dynamics of movements and the interaction of the tool with the leg area are aimed at achieving maximum accuracy and efficiency of rehabilitation. The developed tool allows users to receive information about the position of the foot in the shoe in real time. The mobile application in the smartphone becomes a visual interface that displays important information that provides an opportunity for self-correction of posture, running technique, and various physical exercises. The automated rehabilitation tool defines a new stage in the development of technologies for self-correction of the lower limb in case of flat feet. By providing patients with a tool to actively control the rehabilitation process, this tool improves quality of life and reduces the need for ongoing medical supervision. In the future, there will be pro-gramming of the electrical circuit and development of the application for the device according to algorithms.

МАТЕМАТИЧЕСКОЕ И КОМПЬЮТЕРНОЕ МОДЕЛИРОВАНИЕ ПРЕОБРАЗОВАТЕЛЯ ДЛЯ МАЛОЙ ВЕТРОУСТАНОВКИ

Relevance The importance of using non-traditional energy sources is evidenced by the decision to provide subsidies from the federal budget for state support for technological connection of generating facilities operating on the basis of the use of renewable energy sources (RES). As part of the state policy aimed at improving energy efficiency and developing the use of renewable energy sources, mechanisms are provided to support the stimulation of electric energy production by generating facilities operating on the basis of the use of renewable energy sources. Aim of research In this paper, the development and research of a power converter for wind energy that meets the requirements of highly efficient alternative energy sources is carried out. The developed converter can be used by models. The article is devoted to the analysis of the weaknesses of traditional power converters and the development of solutions to improve their efficiency and reliability. Research methods This work consists in creating a computer model for the wind energy system in the Matlab/Simulink program. The model is focused on the characteristics of a specific wind turbine and includes elements for converting and controlling electricity, such as a generator, rectifier and inverter, as well as a component that simulates the physical operation of a windmill. The selected components make it possible to accurately simulate both the electrical and mechanical parts of the wind power system. Results The authors consider the possibility of developing a power converter for wind energy that meets the requirements of highly efficient alternative energy sources. Mathematical and computer modeling of a converter for a small wind turbine has been performed. The novelty of the work consists in the development of a model in the Simulink program of the Matlab converter software package for a small wind turbine, taking into account the parameters of a WH8-10000W type wind generator and consisting of a virtual PMGM, a rectifier, a pulse inverting stabilizer, an inverter, which were taken from the Specialized Power Systems library, as well as a system simulating the mechanical part of a wind generator. This article presents the results of the calculation and selection of the elements of the electrical schematic diagram of the developed and investigated converter of a small wind turbine. Based on the results of a study performed using computer simulation of a converter for a small wind turbine with a power source from a wind generator, graphs of converter currents and voltages were constructed and analyzed. Acknowledgments: The research was carried out using a grant from the President of the Russian Federation in 2022-2024 for young scientists and graduate students carrying out promising scientific research and development in priority areas of modernization of the Russian economy. Grant recipient is Regina Tagirovna Khazieva. The priority direction of modernization of the Russian economy (direction of competition No. SP-2022 of the Grant Council of the President of the Russian Federation) is «Energy Efficiency and Energy Saving, Including Issues of Developing New Types of Fuel». Research topic: «Development and Research of a Filter Compensating Device to Improve the Quality of Electricity».

INFORMATION AND MEASUREMENT SYSTEM FOR PROBLEMS OF TECHNOLOGICAL CONTROL OF MAYONNAISE

In modern automated production, the main trend in the development of measurements is the transition to machine control and the use of more complex information and measurement systems capable of controlling the technological process. In this connection, the value of the metrological characteristics of each of the measuring channels, which take into account the metrological characteristics of all the blocks included in the measuring channel, increases. The possibility of expanding systems during operation or the possibility of changing their structure depending on production tasks essentially complicates the regulation of requirements for such systems, unlike conventional measuring devices, which are «finished» products, but makes it possible to use key elements of the system to create based on them a new system for solving other problems. This principle is clearly demonstrated in this work. A modern information and measurement system is presented to meet the needs of food industry enterprises specializing in the production of various types of mayonnaise. Mayonnaise is the most common semi-solid seasoning in the world, which can improve the taste of food. The need to develop such a system is related to the fact that there is a need to automate the mayonnaise production process to eliminate the influence of subjective factors on the production process and, in this regard, to improve the quality of products. The fulfillment of this task is achieved by maintaining the parameters of the technological process within the established tolerance limits. Control of the technological process of making mayonnaise and influence on it is possible only thanks to the development of an information and measurement system, which is able to receive information from the object of control thanks to the use of high-precision sensors and influence the technological process through the actions of executive devices. All this makes it possible to avoid an emergency situation and ensure the required quality of products. The structural diagram of the system, the main elements of its elemental base, on the basis of which the electrical schematic diagram of the information and measurement system was developed, are presented. An analysis of errors and uncertainty was carried out, which confirms the high accuracy of the proposed version of the system construction.

RESEARCH OF A MICROCONTROLLER CHARGER FOR LITHIUM BATTERIES

Lithium battery chargers work on the principle of limiting the charge voltage. Among the features of such a charge, the following parameters are distinguished, such as a 3—4 times increase in the voltage of the lithium battery cell, smaller allowable deviations of the charge voltage (linearity of the current-voltage characteristic) and the absence of the need for a compensatory charge (jet recharging) after the battery reaches a state of full charge . Let's consider the specifics of the charge on the example of portable lithium batteries with an output voltage of 4.2 V, the specifics of the charge of which (and with a higher output voltage) consists in the use of the CC-CV method.
 To simulate the operation of the charger and debug the MK program, an electrical schematic diagram was compiled in the ISIS Proteus environment. To test this circuit, the model includes an STM32F103 MC, which is used to generate a PWM signal whose frequency is 62 kHz. Next, the output current is measured, with a setting of the PWM signal strength within 50 %. According to the indicators at the output of the operational amplifier in the current measurement mode, it is possible to determine the current in the ammeter battery circuit.
 Based on the simulation results of the developed scheme and algorithm, it can be concluded that this scheme ensures the fulfillment of the necessary modes of operation of the investigated charging device and is suitable for further implementation. A 32-bit MC of the STM32F103C8 series, located on the BluePill platform — a development board for the ARM Cortex M3 microcontroller, was selected as the control element of the control unit. The stable operating mode of the MK is ensured by two crystal oscillators of 8 MHz and 32768 Hz, and using the built-in frequency multiplier, the MK provides support for the operating frequency equal to 72 MHz.
 As a result, the functionality of the charger circuit and the SS-СV algorithm for fast charging of lithium batteries was developed and confirmed. The use of the CC-CV charge method made it possible to increase the output current of the charge, as well as reduce the time required to restore the energy properties of the battery, while current fluctuations are reduced by 96 %, compared to schemes that use only constant voltage methods.

DEVELOPMENT OF A SYSTEM FOR MONITORING THE PARAMETERS OF THE ENVIRONMENT DURING SHRIMP BREEDING

Today, information and measurement systems are used in almost all industries where it is necessary not only to measure the parameters of the object of control, but also to absorb the process in the object, in order to respond in a timely manner to changes in controlled parameters. Monitoring changes in the parameters of the object of control is an urgent task of modern measuring technology. When developing an information and measurement system that performs the collection, processing and transmission of information, one of the main tasks is to maintain the metrological reliability of such a system and its economic feasibility. The information and measurement system must be competitive in comparison with existing analogues. One of the promising ways to increase metrological reliability is the use of modern high-precision primary measuring transducers, as it is the analog part of the measuring channel that makes the largest contribution to the total measurement error. The article proposes to develop a system of control of environmental parameters in shrimp breeding on the basis of modern element base, which allows not only to measure with high accuracy the microclimate parameters in the shrimp tank, but also to influence the object of control through actuators. These devices switch on the water heating and aeration system if necessary. Determining the need to influence the environment is determined by the operation "comparison of the current value of the control parameter with the set value". This operation is possible thanks to the software product that is loaded into the microcontroller. The article presents a block diagram of the developed information and measurement system, electrical schematic diagram and analysis of errors in measurement channels. It is noted that the measurement error on each of the channels does not exceed 1.5%.

Gas temperature meter

Purpose: of the article is to develop a digital portable gas temperature meter in the range of -50…+600°C. To measure the temperature of dusty gas flows in the air pollution sources with the least significant digit of the digital device 1°C. Design/methodology/approach: The microprocessor measuring unit, probe and software is proposed. It leads to build a high-precision temperature meter based on a thin film sensor HM220 type "pt100". Findings: The calculation of the electrical schematic diagram parameters for signal conditioning of the sensor relative to the input range of the analog-to-digital converter. The experimental measuring unit and the probe of the gas temperature meter are assembled. The principle of the gas temperature meter calibration with the help of a precision resistance box MSR-60M is considered. The experimental gas temperature meter has a total standard uncertainty determined by type B for a maximum value of the measurement range of 1.94°C. The error of the sensor "pt100" makes the largest contribution to the total standard uncertainty, so the error increases in proportion to the value of the measured temperature. Research limitations/implications: On the basis of the proposed design of gas temperature meter it is possible to construct devices with various lengths of probes. Practical implications: The proposed meter is designed for environmental laboratories that measure the velocity, flow and sampling of dust and gas emissions from sources of air pollution. Originality/value: The device design differs due to the use of thermostable wire made of constantan as extending conductors of the temperature sensor, which is included in the unbalanced Wheatstone bridge. This solution allows the use of unipolar power supply 3.3 V for both analog and digital part of the meter. Temperature meter based on a thin film resistance thermometer is characterized by relative ease of manufacture, low material consumption, cost and high reliability.

Electric Drive for an Agricultural Vehicle

Abstract. The authors showed the relevance of creating agricultural machines using an electric drive. (Research purpose) The research objective is to develop an experimental prototype vehicle using an electrical schematic diagram of charge and electric drive control. (Materials and methods) The VAZ 111 Oka car was chosen as an experimental vehicle model with an electric drive, since it has a light weight of 645 kilograms, a simple design and a low cost. Mechanical characteristics of the electric motor were calculated and a frequency converter was chosen to control the electric drive. Laboratory bench tests were conducted. (Results and discussion)The authors installed storage batteries to power the electric drive, developed an electrical circuit schematics getting charged from a 220 volt alternating voltage network, and received graphs for the discharge of a 40-storage-battery power supply. (Conclusions) An electrical schematic diagram of charge and electric drive control was developed and implemented on an experimental vehicle model. It was determined that at the electric motor continuous operation with the load current of 1 ampere, the batteries get discharged within 104 minutes; with the current load of 2 amperes, they get discharged within 83 minutes; with 3 amperes – within 65 minutes, and with 5 amperes – within 50 minutes, which is enough to drive around the farm. The authors graphically depicted the dependence of the available capacity level on the voltage, as well as the batteries’ discharge on the time at various load currents. The authors carried out two experimental studies on storage batteries’ charging from alternating voltage with the current of 2 and 3 amperes: in the first case, the charging time was 350 minutes, in the second – 310 minutes. It was found out that when using the developed scheme, the batteries are charged evenly.

Development of a converter unit for reading signals from a wave solid-state gyroscope with a quartz resonator

This paper describes the main principles of constructing systems for deriving information from wave solidstate gyroscopes with a hemispherical quartz resonator. A method for obtaining the necessary information by demodulating amplitude-modulated gyroscope signals is discussed. An electrical schematic diagram for the amplifier of the signal acquisition unit was developed using a domestic electronic component base. Computer simulation was carried out in the Micro-Cap environment. The prototyping was carried out, and the waveforms of the output signals of the proposed amplifier are presented.

РОЗРОБЛЕННЯ SMART-СИСТЕМИ ЖИТТЄЗАБЕЗПЕЧЕННЯ І МОНІТОРИНГУ КІМНАТНИХ РОСЛИН

A robotic system is a microcontroller with a set of sensors that register external changes (humidity, lighting, temperature, etc.), a data exchange module, and an execution mechanism that begins to act when the user sends a command to the microcontroller from an Android device. Creating robotic systems is one of the main tasks of industrial automation, which is closely related to the IoT (Internet of Things) technology. There are a lot of variations in the development of robotic systems in synergy with IoT: "Smart Home", driverless car, cleaning robot, etc. In most cases, a smart home is a home automation system – a system that helps save time on managing all other engineering and entertainment devices. And the more devices, the more necessary it is to use automation systems. For a large number of IoT systems, a mobile phone or tablet based on the Android or iOS operating system is often used as a control device. This is due to the mobility in managing and monitoring messages through a handheld device. The purpose of this article is to develop a Smart system for life support and monitoring the condition of indoor plants.The Smart system being developed provides for the creation of not only a plant life support system, but also the creation of a mobile application for managing and monitoring plant life support. In the course of writing the article, the existing automated control systems were investigated and a block diagram of the Smart system was constructed, taking into account its interaction with the mobile application. The article uses a decentralized automation system in which the main elements are the ESP8266 microcontroller (as a transmitter) and the Atmega328 microcontroller (as a data processing element). An application for a mobile device that acts as a remote control has also been developed. Within the framework of the article, an electrical schematic diagram of the Smart system has been developed. The article also provides detailed instructions and recommendations for both hardware and software parts.

Експериментальне дослідження частотного дискримінатора з компенсації зміни рівня вхідного сигналу

Subject and Purpose. Answering the need for powerful high-frequency signal generation and desired radar range provision, pulsed magnetrons hold the current lead as part of radar transmitters. Yet there are some disadvantages, such as significant noise level and technological difficulties concerning the frequency tuning implementation. In this connection, a direct control of the pulsed magnetron frequency with the use of the Automatic Frequency Control (AFC) causes problems. And in the receiver, the AFC of the heterodyne rather than of the magnetron is more frequently used. The heterodyne frequency is maintained at such a level that the receiver is always tuned to the frequency of signal to receive. For various signal generation arrangements, the existing methods of frequency tuning with a frequency discriminator will be analyzed towards the following development of a principal electrical schematic diagram with gaining the operating characteristics of the frequency discriminator prototype on that diagram basis. Methods and methodology. The electrical schematic diagram is developed in terms of intuitive approach and analyzed by the mathematical modeling method. Results. The functional scheme of a frequency discriminator combining advantages of both single-cycle circuit (design simplicity and ease of tuning) and two-cycle circuit (null output voltage at a given frequency of the input signal and compensation possibilities as to the input voltage amplitude varying and interference) has been developed. The principal electrical schematic diagram of this new frequency discriminator has been reported together with the measured amplitude and frequency characteristics, dynamical figures, etc. Conclusions. The novelty of the proposed concept of a heterodyne AFC system built around a frequency discriminator has been confirmed. Its advantages over the known solutions have been shown.

РОЗРОБКА ІНТЕРФЕЙСНОГО МОДУЛЯ ДЛЯ ПРОГРАМНО-АПАРАТНОГО КОМПЛЕКСУ АВТОМАТИЧНОЇ КЛАСИФІКАЦІЇ ТЕКСТІВ

The amount of information presented in text form is constantly increasing. A feature of a large amount of such information in most cases is the lack of its structuredness, which complicates the analysis process. At the stage of document processing in the information and analytical system, an automatic classifier is used – as a program, or as a software and hardware complex that accelerates automatic text processing. In this paper, a software and hardware complex is considered, in which the software part functions on the user's computer, and the hardware part is implemented on the FPGA. Thus, the problem of organizing the connection between its two parts is urgent. While FPGAs have high internal parallelism and very high internal bandwidth, the low bandwidth of the interface between the accelerator and the rest of the system, as well as restrictions on the conditions of its use, is a bottleneck in the field of data transfer. This problem is aggravated in the conditions of the need to create a network system for constructing a classifier, where several user computers connected to the network need access to the hardware-implemented part of the complex (accelerator). The aim of this work is to develop an internal interface module with network communication, in accordance with the technical and functional requirements of the software and hardware complex for automatic text classification. Considering the need to provide network access to the accelerator, as a result of the analysis, the Fast Ethernet interface was chosen as the base one. This interface is the most common LAN standard used by most businesses. For the development of the printed circuit board of the interface module, a comprehensive computer-aided design system Altium Designer was used. After the development of the electrical schematic diagram of the project, a simulation of the controller part was created in the Proteus digital-to-analog simulation program. For the convenience of testing the developed interface module, the Arduino UNO module and the SPI serial interface were used. A feature of the developed module is the support of network-level protocols, it makes it possible to organize access from any personal computer of the local network to an expansion board built on the basis of FPGA. The developed printed circuit board of the interface module was analyzed for possible defects and a list of recommendations for the operating conditions of the device was developed. The interface board is designed taking into account the balanced ratio of price-performance criteria, and is intended for use in any institution where there is a need for automatic classification of text documents.

SYSTEM OF AUTOMATIC FREQUENCY CONTROL OF HETERODYNE OF THE RADAR RECEIVER WITH MAGNETRON TRANSMITTER

At present, pulsed magnetrons are leaders in the use in the radar transmitters which is caused by the need to generate powerful high-frequency oscillations and to provide a given coverage range. The disadvantages of magnetrons include a significant level of noise and difficulties in implementing frequency control. For this reason, when using automatic frequency control (AFC), problems arise in controlling the frequency of the pulsed magnetron. In view of this, the AFC of heterodyne of the receiver rather than the one of the magnetron is most often used. The heterodyne frequency is maintained such that the receiver is always tuned to the frequency of the received signal. The objective of this paper is to analyze the existing methods for tuning the heterodyne frequency of pulsed radars with a magnetron transmitter, to develop a concept for building a functional layout and its practical implementation. The functional layout of the automatic frequency tuning system of heterodyne in radar receiver with a magnetron transmitter is developed and described in the paper. A frequency discriminator is used in AFC. The frequency discriminator combines the advantages of a single-cycle circuit (simplicity of design and tuning) and a two-cycle circuit (an output voltage equal to zero at the given magnetron frequency, as well as compensation of variations in the amplitude of the input voltage and interference). The practical implementation of the developed system is presented upon the example of millimeter-wave band radar (40 GHz), where a Gunn diode oscillator with varactor frequency tuning is used as the receiver heterodyne oscillator. In this paper, the electric scheme of a new frequency discriminator and its amplitude-frequency characteristic are shown. An intuitive method was used to develop an electrical schematic diagram. The analysis of the developed scheme was carried out using the method of mathematical modeling. Conclusions are drawn about the novelty of the proposed concept of constructing the AFC of heterodyne radar receivers with a magnetron transmitter and its advantages in comparison with known solutions.

Development of a power supply for multi-angle electric impedance tomography complex

In the present work, the development of a multi-channel power supply for the hardware part of the hardware-software complex of multiangle electric impedance tomography is considered. The requirements for the developed module are considered based on the selected hardware components, as well as the patient and medical personnel safety requirements, taking into account the standards developed by the International Electrotechnical Commission. Taking into account the formulated requirements, a structural, electrical schematic diagram of the power supply was developed, as well as a printed circuit board and an assembly drawing, and a prototype model was built. The issues of patient and medical personnel safety during the research using the multi-angle electric impedance tomography method with the use of the developed module are considered, including in the case of joint use with electrosurgical devices or defibrillators.

Operational requirements to STA-5ZhO replaceable technological superstructure for transportation and subsoil application of liquid organic fertilizers based on Ural-432065 vehicle chassis

The development of Ural-432065 specialized all-wheel vehicle chassis with STA-5ZhO replaceable technological superstructure complies with agrotechnical, safe operation and maintenance requirements. Safety requirements and warning descriptions are reflected in the service manual in both text and graphical forms. It is important to study the service manual before using. The relevant symbols are represented on the equipment in locations of working organs and servo units. The Ural-432065 chassis with STA-5ZhO replaceable technological superstructure is intended for transportation and subsoil application of liquid organic fertilizers. The assembly can also be used for community facilities on all types of roads and terrain. The STA-5ZhO superstructure is designed in the form of tank equipped with auxiliary mechanisms with hydraulic drive from the base vehicle chassis. General view of STA-5ZhO superstructure, its specifications, composition, principle of operation, operator control, hydraulic circuit description, electrical schematic diagram, features of operation and service are presented. The adjustment of organic fertilizer consumption at the input of distributor is provided by the installation of plain washer that allows to change the passage area of distributor pipe. Organic fertilizer consumption depends on its density and on the size of plain washer. Operation of STA-5ZhO replaceable technological superstructure for transportation and subsoil application of liquid organic fertilizers based on Ural-432065 vehicle chassis is provided by performance and technology standards, regulated by relevant documents, available and handy to the operator. Design capabilities and used constituent parts allow to increase the operating efficiency of the replaceable superstructure as a part of technological complexes with rise in labor productivity.

Features of operation of STA-5TM replaceable technological superstructure for application of solid mineral fertilizers based on Ural-432065 vehicle chassis

The development of Ural-432065 specialized all-wheel vehicle chassis with STA-5TM replaceable technological superstructure for application of solid mineral fertilizers complies with the agrotechnical, safe operation and maintenance requirements. Safety requirements and warning descriptions are reflected in the service manual in both text and graphical forms. It is important to study this manual before starting. The relevant symbols are represented on the equipment in locations of working organs and servo units. The Ural-432065 chassis with STA-5TM replaceable technological superstructure is intended for agricultural and municipal works, such as application of dry granulated fertilizers and spreading of earth-moist lime, sand, broken stone, salt and mixtures. General view of the STA-5TM superstructure, its specification, composition, principle of operation, operator control, hydraulic circuit description, electrical schematic diagram, features of operation and service are presented. Amount of fertilizer is controlled by the principal slide gate. Under transportation mode, the slide gate should be occluded. Distribution of granular fertilizers is carried out by the spreading discs. Distributing width is 10-36 m. The adjustment is made on the basis of table of application rate or by means of passing of measuring distance, taking into account the grain size, volume weight, surface structure and moisture. Operation of the STA-5TM replaceable technological superstructure for application of solid mineral fertilizers based on Ural-432065 vehicle chassis is provided by the performance and technology standards, regulated by relevant documents, available and handy to the operator. Design capabilities and used constituent parts allow to increase the operating efficiency as a part of technological complexes with rise in labor productivity.

Автоматизация рабочего процесса магнитореологического дросселирующего устройства

The article analyzes the elements of the magnetorheological drive systems. It is examining the way of the regulating of discharge in the control flow path by means of magnetorheological control device and is provided the method of workflow automation for magnetorheological control device. It describes the ways to implement the transmission of control signals and reverse communication by pressure. It presents the method for the calculation of control signal by microcontroller and the example of one control algorithm. The text covers the electrical schematic circuit diagram for workflow of magnetorheological control device; this allows the use of the magnetorheological control devices in the actuators of automatic and mechatronic systems. It describes the way to implement the workflow of magnetorheological control devices by means of differential pressure gauge. It also describes a functional scheme the operation of the differential pressure gauge. The authors offer the hydraulic schematic circuit diagram to include the magnetorheological control device in the control magnetorheological flow path with the thermostatic system which allows the temperature regulation of the rheological properties of magnetorheological fluid. It presents the method to implement the temperature control of working fluid in the magnetorheological systems. It is discussed the features of thermostatic control systems which is established on the basis of thermoelectric semiconductor elements. It describes the advantages of the using of proposed system. It shows the static characteristics of the magnetorheological control devices in automatic mode of fixed flow characteristics. It is analyzed the results of field experiment and made a comparison with the results of numerical modeling of workflow for magnetorheological control devices. The effectiveness of a method of workflow automation of the magnetorheological control device is confirmed with calculations and experiments.

Marine Gear Reducer Design Device of Lubricating Oil Temperature Control System

Signal of PLC controller by PID operation after the output of numerical simulation between 0~1, and solid state relay can receive only signal, digital or switched on or off. Only connected the two, temperature control system can be realized. The experimental approach is to learn from PWM pulse width modulation technology, the numerical analog PID controller output into the heating time in a cycle, namely, solid state relay on time. By this method, the indirect control heating rod of equivalent power, the power output of the heating rod according to the control signal of controller output, so as to realize marine gear oil temperature PID regulation. This paper designs the control system used in the experiment. The temperature control experiment system; design of the electrical schematic diagram of the temperature control system, including two parts electrical schematic diagram of control circuit and main circuit of temperature control system design process. At the same time, the experimental scheme is designed. Analysis of the mechanism of temperature balance control object, and focus on the temperature within the experimental results are analyzed.

Construction and modeling of unified control systems of actuating mechanisms for objects of gas-transport system

The control method for the actuating mechanism of technological equipment of the gas transportation system with constant control circuits monitoring based on the ‘’Siemens’’ equipment is proposed. The electrical schematic diagram for voltage control in the actuating mechanism control circuits in the command mode and during the operation, was developed.The control algorithm for the actuating mechanism of EPPU-4-1 with constant control circuit monitoring, was worked out. To work out the algorithm, the mathematical control model for the actuating mechanism with control circuit monitoring based on the MatLab software was developed.To unify the proposed solutions, the method for generating functional blocks in the IEC 61131 standard from the mathematical models of control algorithms, pre-made in the MATLAB Simulink environment was developed.The procedures were approved, and the information processes of automatic generation of the IEC 61131 function blocks for programmable logic controllers were investigated.The IEC 61131 function blocks based on the mathematical models of the control algorithms for the actuating mechanisms were developed.The hardware-software complex for studying and testing the main operation modes of electro-pneumatic actuating mechanisms of a linear part of the main gas pipelines was created. As a result, using the proposed scientific and technological solutions, control algorithms and methods for actuating mechanisms of different production equipment allows to unify and improve the economic and performance characteristics.

Improvement of the method used for control of starting direkt-currentrailway motor

The analysis of methods for rotation speed control of direct-current traction motors with the series and compound excitation is conducted in the paper. The scheme to improve energy efficiency of speed control devices of traction electric motors of public electric transport rolling stock is proposed. The proposed scheme using the increasing DC-DC converter allows to perform a smooth TEM field weakening, improve the shunt coil copper use and reduce electric power consumption at starting the rolling stock. In this case, weakening the compound excitation TEM field is conducted by changing the current in both series, due to the input converter circuit, and shunt coil. Moreover, current control in the shunt coil, the magnetizing force of which is directed opposite the magnetizing force of the series coil, is performed due to the output converter circuit. The electrical schematic diagram of the test stand and results of studying the proposed field weakening method are proposed.

Schematic development solutions automatic brightness control oleds glow.

В работе предложена методика измерения яркости органической светоизлучающие структуры и разработаны схемотехническое решение для автоматического регулирования яркости свечения органического светодиода в зависимости от освещенности помещения. Смоделирован и оптимизирован схему электрическую принципиальную в программной среде Proteus. Предложенная схема позволяет оптимизировать работу светоизлучающего устройства и за счет использования органических светодиодов и системы их регулирования снизить энергопотребление.