Analysis of schemes of a current limiting unit in automatic control systems for dc electric drives
The most suitable electric drive for these mechanisms is considered to be a direct current electric drive with thyristor automatic control. Frequency control of asynchronous electric drives finds less application due to the complexity of control.
Подобные документы
Rationale for the use of advanced technology for sewage treatment schemes dairies. Removal of insoluble organic matter by adding a flotation purification scheme. Using the immersed biofilter for a disk intensive degradation of organic pollutants.
??????, добавлен 13.08.2016Design, develop Micro Air vehicle system provides a platform to support a very wide variety of missions for the small unit. Further miniaturization of electronics and sensors these vehicles to become even smaller and to operate in complex environments.
?????????? ??????, добавлен 18.01.2014Research of mathematical model of the process intrusion forming polymer products. Establishing a dependency on the angle of melt costs lifting screw injection unit in the material cylinder based on the geometric parameters of extrusion head and mold.
??????, добавлен 18.02.2016The same time in the Republic of Azerbaijan, the processes of complex processing of oil-plant hydrocarbon gases and the oxidation and conversion of these gases with the participation of heterogeneous catalysts of various types have been relevant.
??????, добавлен 14.02.2025Describing of a new approach to a successive reduction of attribute space dimension. Simplifing sorting multiple criteria alternatives and to diminish a complexity and labour-consumption of classification procedure. Construction of classification rules.
??????, добавлен 16.01.2018Tissue Paper and its properties. Space and weight characteristics. Carrier and type of aircraft for transportation. Limitations by sizes, weight and loading on the floor. Calculation of number of bags that we can put into one box. Manipulation signs.
???????? ??????, добавлен 16.12.2013Analysis of criteria for steels warping susceptibility under the thermochemical treatment. Study of value of the details warping during the quenching. Analysis of residual internal pressures in hardened layer and kinetics of austenitic grain growth.
??????, добавлен 30.01.2017????????? ???????? ????????????? ???????, ??????? ? ???????????? ?????????? Direct XCD. ???????????? ?????????????????? ??????????? ??? ?????????? ????????????? ?????? ????????????? ? ????????? ??????? ??????????? ???????, ?????????? ???????? "?????????".
???????, добавлен 26.01.2020Creation of a 3D model of the design scheme of the water heating and cavitation device and simulation in Hysys software. The main relationships between temperature, pressure and flow rate of the cavitation generator of the pulse hydrocycle unit.
??????, добавлен 10.12.2024Analysis of finite element methods, numerical methods for solving engineering and mathematical physics. Obtaining analytical solutions for problems of complex geometry, loads and material properties. Tension rods, beams and other simple structures.
???????????, добавлен 20.10.2014The mixed approach that combines theoretical research, analysis of scientific research with analysis of practical examples, increasing visitor engagement through augmented reality, virtual reality technologies, also encompasses important design aspects.
??????, добавлен 24.06.2024The comparative analysis of the microstructure, phase and chemical composition of the experimental alloys of the Fe-W type with the standardized grade ferrotungsten. The feasibility of using Fe-W for the manufacture high tungsten materials based on iron.
??????, добавлен 30.01.2016Creation and testing of a model of a diesel engine muffler. Plotting a pressure level diagram inside the device. Analysis of the distribution of the sound field. Assessment energy losses of exhaust gases. Estimation of the spectrum and octave bandwidth.
??????, добавлен 10.10.2024- 114. Chemical modification of aminopolysaccharide from shrimp shell by direct connection with polyaniline
Modification of aminopolysaccharide by deacetylation of chitin from the shrimp shell using the enzyme as a biocatalyst and microwave energy. The influence of temperature and reaction time, the ratio of aminopolysaccharide to aniline on its properties.
??????, добавлен 10.08.2020 The compositional analysis of wastes and finding environmentally sustainable and innovative alternatives for waste disposal for tanneries. The processing and evaluation of hydrolyzed collagen and skin waste for the realization of composite materials.
??????, добавлен 24.02.2025Consideration the mathematical model of process of pressing of seamless pipes. Effect on various forms of rolling shaping matrix. The nature of the formation of the deformation zone. Development of direct compression on a cylindrical mandrel pipe.
??????, добавлен 30.01.2016The service designed to facilitate the process of SCs, with demonstrating its elements in particular, database and knowledge base, arrangement of information for various users. In the authors’ opinion, such services will become a step towards no sphere.
??????, добавлен 13.10.2022Aluminum can be considered green when its production and alloys processing are low-carbon (as well as associated with the reduced amount of other greenhouse gases, hazardous chemicals and environmental pollutants), include recycling of scrape and waste.
??????, добавлен 19.09.2024Models which adequately combine technological parameters with indicators of treatment quality have been designed for the cavitation cleaning processes of sewage from organic admixtures. Water of industry and public water use it is considered as sewage.
??????, добавлен 14.09.2016Reasons for the growing movement to combine brain science with medicine, education, and industry. Authentication using passwords or PIN codes, and using it to log in to your device. Features of biometric authentication, its development and technology.
??????, добавлен 09.04.2023The historical and formation stages of the Lviv school of glassmaking are approximated. The modernization of educational mechanisms are identified, ways of their solution are suggested and applied measures that will promote implementation are outlined.
??????, добавлен 16.02.2022- 122. Global Research on Artificial Intelligence from 1990–2014: Spatially-Explicit Bibliometric Analysis
The evaluation of artificial intelligence research from 1990–2014 by using bibliometric analysis. Growth trend of articles in artificial intelligence from. Temporal pattern of frequently used keywords. International Productivity and Collaboration.
??????, добавлен 02.02.2017 Experimental improvement of the stability of the bolt connection of the technological and power modules of the new design of the modular machine-tractor unit. The new construction of the pivot connection of the technological module with the power module.
??????, добавлен 10.08.2022Results Global Capstone Design Workshop in order to find eco-friendly, energy-saving methods in our daily lives and to develop and improve them. In particular, selecting topics based on practical methods for Global Capstone Design will be the main focus.
??????, добавлен 20.09.2021Presents various methods of piling, using undercutting, as well as various combinations of these methods. The impact load on the pile head is created by special mechanisms. Driving piles by screwing is based on driving steel and reinforced concrete.
??????, добавлен 10.10.2024