05.00.00 Technical science
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OPTIMUM SPEED OF DIAGRAMS FOR CHANGES OF TEMPERATURE OF A PRODUCT IN THE DEVICE OF AIR COOLING
DescriptionThree diagrams are developed for the changes of temperature of a product in air cooling devices with restrictions of speed of the systems’ performing parts of electric drive and it’s various derivatives at dispersal and braking. Parameters of optimum diagrams of speed for the big changes of temperature of a product in devices of air cooling are defined
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OPTIMAL PARAMETERS OF TECHNOLOGICAL LINE FOR LOADING TOBACCO LEAVES INTO CONTAINERS
DescriptionThe article presents the research results on parameters optimization of technological line for loading tobacco leaves into containers. The aim of the research was decreasing labor expenses on preparing tobacco for artificial curing. This was achieved by line modernization utilized for loading tobacco leaves into containers. We have also developed working parts of technological line for automatic loading of tobacco leaves into containers. Researches on weight studying of tobacco leaves of 3 sorts zoned in the Krasnodar region have been carried out. Dispersion analysis has not revealed weight differences between sorts, therefore, further researches can be carried for one sort. Optimization of working part for loading tobacco leaves into containers was carried by analysis of regression equation obtained by bifactorial experiment. Irregularity of leaf position was taken as optimization criterion. It has been discovered that optimal regimes: transporter belt speed v=2,8m/s, number of transporter’s double movements n=19 min-1 can be used for uniform container loading by leaves. Researches on studying line capacity on leaves position irregularity revealed that maximal uniformity obtained when line capacity is 260 kg/h
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OPTIMAL MANAGEMENT OF THE MAIN IRRIGATION PUMPING STATION
DescriptionStatement, method and result of solution of typical problem of control of main irrigation pumping system are given. Problems of its adopting at regional automatic control systems of irrigation and drainage systems are shown
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THE SPRAYER TO FIGHT THE REEDS IN THE RICE FIELDS
DescriptionThe article presents the means of chemical protection of the rice paddies from weeds, which is handling the herbicide directly panicles of reeds in the period of their release sprayer with the original design of the rod
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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 %
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Description
In this article we have considered a seismic survey technology to refine the geological structure and the determination of physical and mechanical properties of soils in the operational methods of nondestructive testing and prediction of physical stability of hydraulic structures (dams)
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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
This article presents the original data for study designed to determine the effect of individual parameters of machines and technological process of round timber harvesting on the energy consumption data. These data allow us to determine the frontier efficiency of individual processing steps as well as of timber harvesting generally
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DETERMINATION OF TIME-CONSUMING TASKS AND ASSESSMENT OF THE EFFECTIVENESS OF PROJECT MANAGEMENT
DescriptionThe article deals with the issues of determining the complexity of the project objectives, performance evaluation of the project, as well as the question of the distribution of specialists on problems
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DETERMINATION OF METALS CONSISTS IN REGUL, THE RAW RICE SORT
DescriptionThe content of metals in raw rice is determined. Inversion voltammetry (IVA) was carried out in an accredited laboratory on the "Ta-Lab" device of the company "Tom-Analit" LLC according to the approved method of ERD F 16.1: 2: 2.2: 2.3.46-06. Silicon dioxide is determined according to ERD F 16.1: 2: 2.2: 3.65-10 and humidity according to GOST 5180-2015. Preparation for the IVA is illustrated. Voltammograms of the potential difference of the chloride-silver reference electrode are compared with the current strength of the indicator mercury-film electrode of electrochemical cells. It has been established that the main metals of the raw rice called Regul grown in the Krasnodar region are: copper 1.6 ± 0.4 mg/kg, plumbum 1.4 ± 0.4 mg/kg, zinc 1.9 ± 0.5 mg/kg, iron 95 mg/kg, manganese 5.2 ± 1.3 mg/kg and silicon dioxide 6.5 mg/kg. The presence of iron is associated with the wear of gravity. The content of zinc, manganese and silicon dioxide corresponds to this type of grain. The presence of copper and lead is associated with the absorption of heavy metals from the soil