№ 97(3), March, 2014
Public date: 31.03.2014
Archive of journal: Articles count 94, 205 kb
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THE PROBLEM OF CLASSIFICATION AND BASIC REQUIREMENTS FOR PROJECTING WIND-ELECTRICAL INSTALLATIONS
DescriptionThe article describes the principles of classification, as well as the basic requirements and features of wind power plants projecting
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STATIC CONVERTERS OF THE ELECTRIC POWER WITH IMPROVED OPERATION-TECHNICAL CHARACTERISTICS
DescriptionThe article describes scopes and new technical decisions of static converters of the electric power with the improved operation-characteristics, executed with use of new element base and a modular principle of construction
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DC VOLTAGE SOURCES WITH IMPROVED OPERATIONAL AND TECHNICAL CHARACTERISTICS
DescriptionThe article discusses the new structural schematics and features of the DC voltage source with improved operational and technical characteristics
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STABILIZERS PARAMETERS OF ELECTRIC POWER WIND POWER INSTALLATIONS
DescriptionThe article discusses the new structural schematics stabilizers of voltage and frequency contactless power generators wind power installations
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ALGORITHMS AND METHODS FOR DETECTION AND RECOGNITION OF HAND GESTURES ON VIDEO IN REAL TIME
DescriptionThe article deals with methods for detection and recognition of hand gestures on video in real time and writing a modified algorithm on their basis
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Description
In this article we have identified analytical dependences of position of an automatic control system output coordinate for optimum speed diagrams for small movements of actuating device of electric drive and its moving error value
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Description
In this article we have developed the optimum speed diagrams for small movements of electric drive’s actuating device. We have identified analytical dependences of position of automatic regulation of system control signal of time, which allows to form the optimum speed diagrams for small movements of electric drive’s actuating device with ultra-precision
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Description
In this article we have investigated fatty acid composition of oil made of flex seeds of VNIIMK-630 traditional variety and new selected SURPRISE variety. The comparative analysis of composition and factional composition of tocopherol in oil made of these seed varieties has been carried out. We studied changes in acid and peroxidation numbers when flex seeds are stored in the dry condition
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OPTIMIZATION OF DISK TOOLS ORIENTATION ANGLES OF THE UNIVERSAL SOIL-PROCESSING INSTRUMENT
DescriptionThe optimal angles of spatial orientation of disk tools are found basing on the mathematical model of the universal soil-processing instrument. The optimization problem has solved basing on analytical approximation of imitational modeling results and optimization map analysis
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DEFINITION OF ELECTROMAGNETIC ENERGY AND MOMENT IN THE CASCADE ELECTRIC DRIVE
DescriptionThe problem of calculation of arguments of the controlled cascade electric drive is reviewed. For a basis the electric drive is taken by the designed writers. For definition of the moments the method grounded on electromechanical transforming of energy is proposed. On an example of a present construction the values of currents of a stator and rotor and phase angles of these currents were retrieved. It has allowed to find the energy, accumulated by the device, in the given instant. Utilizing this result, the instantaneous moment was defined. The introduced mathematical model realized as the program in environment Delphi. Inaccuracy for an audit example did not exceed 10-15 %