scholarly journals Research on the relative productivity of a drum mill type SAG 8.5×5.3

2020 ◽  
Vol 168 ◽  
pp. 00012
Author(s):  
Ivan Minin
Keyword(s):  
Energy Consumption ◽  
Control Parameters ◽  
Operational Mode ◽  
Operational Parameters ◽  
Technological Parameters ◽  
Expected Performance ◽  
Relative Productivity ◽  
Required Quality

The determination of the optimal operational mode of drum mills can be assessed by different criteria. The most important of them can be formulated as follows: “To be specified and established the values of the mill operational parameters regarding to which it is possible to be provided the user’s expected performance at the required quality of the final product and the same to be achieved at minimal energy consumption”. For the fulfillment of this condition, there has to be determined the laws of productivity variation, the final product quality and the energy consumption in function of the adequately chosen representative control parameters of the mill. There are obtained mathematical models, describing the most important technological parameters of the machine and are made conclusions about the factors influencing on them.

scholarly journals Determination of main parameters of ISOBUS system based agricultural machinery management

2021 ◽  
Vol 46 (3) ◽  
pp. 40-48
Author(s):  
Magó László ◽  
Kosta Gligorević ◽  
Milan Dražić ◽  
Mićo Oljača
Keyword(s):  
Communication Protocol ◽  
Plant Protection ◽  
Electronic Devices ◽  
Technological Parameters ◽  
Industry Standard ◽  
System Of Parameters ◽  
Agricultural Machines

ISO organization (https://www.iso.org) in early 90s defined an industry standard for the communication protocol among electronic devices of different manufacturers of agricultural machines. After that, all of the market actors recognised that this technology would be very important for agricultural electronics. The appearance of ISOBUS products in the market was in the mid-2000s. ISOBUS description could be found in ISO-11783 (https://www.iso.org). Through the standards and the related technical background, the production processes and the operations could be followed and monitored by the extensive Data Management. Farmers' and users legitimate needs and developing goal is to elaborate a decision support systems that follow-up the utilisation of the machines and ensure the quality of operations. For this purpose, it is essential to determine which technical, economical, technological parameters detection, measurement, transmission, processing, and evaluation becomes necessary. In our work, we reviewed which mechanical characteristic, settings are monitored within the ISOBUS system by the major machine manufacturers. We developed the system of parameters and derived features that provide effective farm-, and land-management in case of attached equipment for spreading of input materials, plant protection and tillage implements.

Temperature during the vibration-assisted compression of alfalfa

BioResources ◽  
2020 ◽  
Vol 16 (1) ◽  
pp. 141-150
Author(s):  
Xiaoyu Wu ◽  
Shuai Yang ◽  
Chundong Song ◽  
Kun Ding ◽  
Chuanzhong Xuan ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Vibration Frequency ◽  
Experimental Results ◽  
Maximum Temperature ◽  
Compression Time ◽  
Vibration Parameters ◽  
Reducing Energy ◽  
Compression Temperature

Compression of alfalfa into briquettes is an effective way to solve the problem of storage and transportation. In the process of compression, heat is generated and the temperature is raised in the material. In fact, the appropriate temperature can improve the quality of alfalfa briquettes and reduce the energy consumption of densification. In this study, the effect of assisted vibration on the compression temperature was tested. The results showed that when the vibration frequency was below 15 Hz, the temperature at the center and side in compressed alfalfa increased slowly with compression time. When the vibration frequency was above 20 Hz, it increased first and then decreased with the increase of time. Moreover, the maximum temperature value increased remarkably when the frequency was above 20 Hz. In the same vibration frequency and compression time, the center temperature in the compressed alfalfa was higher than the side temperature. The experimental results provide a reference for the determination of reasonable vibration parameters, and explanation of the effect of vibration on reducing energy consumption.

scholarly journals METHODOLOGY FOR AUTOMATIC DETERMINATION OF CONTRAST OF LASER MARKING FOR DIFFERENT MATERIALS

2019 ◽  
Vol 3 ◽  
pp. 134
Author(s):  
Lyubomir Lazov ◽  
Edmunds Teirumnieks ◽  
Nikolay Angelov ◽  
Erika Teirumnieka
Keyword(s):  
Laser System ◽  
Digital Camera ◽  
Test Field ◽  
Automatic Determination ◽  
Technological Parameters ◽  
Test Analysis ◽  
Laser Marking ◽  
Different Types

A new methodology for determining and optimizing the contrast of the technological laser marking process has been developed. It can evaluate the quality of the markings regardless of the type of material and the type of laser system. To perform the test analysis, a specialized test field is programmed, which including the change of two of the main parameters influencing the marking process: the linear energy density (LED) and the linear density of the pulses (LDI). Marking of a test field consisting of squares of a certain size is done by means of a raster marking method with a constant step between the lines. The results are processed with a digital camera and specialized software. The maximum blackening is compared with the background of all fields and is juxtaposed with the effective energy needed to obtain a certain contrast. Several consecutive iterations are made, with each of the following experiments excluding the variants with least contrast. Thus, the study consistently brings the result to a minimum working area of the basic technological parameters, providing the user's desired contrast of the marking. The developed author's method of automatically determining the contrast of the laser marking reduces the time for preliminary experimental research and gives a reliable and subjectively absent way of qualitatively marking different types of industrial products.

Characterization of Medicinal Plants Sorting Process by Planar Sieving through Mechanical Oscillations Analysis

2015 ◽  
Vol 801 ◽  
pp. 213-218
Author(s):  
Augustina Pruteanu ◽  
Mihai Matache ◽  
Ladislau David ◽  
Catalin Persu ◽  
M. Duţu ◽  
...  
Keyword(s):  
Technological Parameters ◽  
Mechanical Oscillations ◽  
Separation Degree ◽  
Sorting Process ◽  
Working Set ◽  
Set Up ◽  
Optimum Working

The mechanical sorting process of granular and vegetal materials is a complex technological process influenced by a series of factors from which we remind: mechanical vibratory motion, geometrical measures of the sorting equipment and technological factors. Based on correlations between the presented elements one can establish the technological parameters of the sorting process so that to realize a quality separation.In the paper we present a method for determination of mechanical oscillations influence on the quality of the sorting process with planar sieves. The experiments performed on a dimensional sorter with planar sieves aimed at identification of an optimum working set-up in terms of frequency and amplitude of the sorter’s vibrators, for a quality separation degree.

scholarly journals Determination of Bearing Quality Using Frequency Vibration Analysis

2021 ◽  
Vol 71 (2) ◽  
pp. 343-350
Author(s):  
Žiaran Stanislav ◽  
Chlebo Ondrej ◽  
Šooš Ľubomír
Keyword(s):  
Frequency Distribution ◽  
Vibration Analysis ◽  
Time History ◽  
Acoustic Energy ◽  
Frequency Range ◽  
Vibration Acceleration ◽  
Maximum Acceleration ◽  
Required Quality

Abstract The paper proposes two methods for determining the quality of industrially manufactured bearings, where the vibro-acoustic energy is expressed by measuring the vibration acceleration. The determined criteria were verified and 100 % agreement was reached in determining the required quality of the bearings. Unwanted bearing noise emissions and its faults can be monitored over the maximum acceleration value determined from the time history, the frequency distribution and the r.m.s. value of the determined frequency range.

scholarly journals DETERMINATION OF TECHNOLOGICAL PARAMETERS AND INDICATORS OF THE QUALITY OF NEW HERBAL COLLECTION

2018 ◽  
Vol 6 ◽  
pp. 61-68 ◽  
Author(s):  
Anna Kriukova ◽  
Inna Vladymyrova
Keyword(s):  
Rheumatic Diseases ◽  
Maximum Yield ◽  
Biologically Active ◽  
Raw Material ◽  
Concomitant Treatment ◽  
Technological Parameters ◽  
Anti Inflammatory ◽  
Active Substances

Rheumatic diseases include more than 1000 nosological forms, among which the highest incidence is osteoarthritis, rheumatoid arthritis and osteoporosis. The predominantly advanced age, the presence of comorbid diseases, the duration of the course of the disease and the need for concomitant treatment complicate the conduct of anti-inflammatory and analgesic therapy in such patients. Herbal medicines, in particular in the form of doses, due to the mildness of the action and the absence of significant side effects, can be used in the complex therapy of the acute period of rheumatic diseases, as well as for the prevention of relapse. The aim of the presented work was to develop the composition, technology and determination of the quality indices of herbal collection, which reveals analgesic and anti-inflammatory properties and can be used for the prophylaxis and auxiliary therapy of a number of conditions in rheumatology. Materials and methods. In the course of research, the methods used in the State Pharmacopoeia of Ukraine 2.0 (SPHU) were used. Results. As a result of the analysis of literary data and our own experimental studies on the chemical composition and pharmacological activity of certain types of medicinal plant material, we have developed herbal collection that is recommended for the treatment and prevention of rheumatic diseases of the joints. Studies have been conducted on the development of quality collection indicators, which guarantee the effectiveness, safety, reproducibility of the imposed collection. The basic technological parameters of the raw material are determined: specific, bulk and volume mass, porosity, degree, degree of shredding. In order to prevent uneven mixing, an optimal degree of grinding of the raw material of the investigated collection, which ranges from 0.20 mm to 0.35 mm, is established, which allows obtaining a homogeneous mixture and contributes to the maximum yield of extractive and active substances. A series of experimental works aimed at studying the influence of the method of infusion (for 15, 30, 45, 60 minutes and until complete cooling) on the quality of the collected water extracts from the collection was conducted. The optimal method for setting the collection for 60 minutes is the best, since the content of extractives and flavonoids in the aqueous extract was highest and amounted to 49.57±0.52 % and 0.52±0.03 % respectively. Conclusions. The composition of the herbal drug was developed: Harpagophyti radiх, Sophoraе alabastra, Valvae fructus Phaseoli vulgaris, Polygoni avicularis herba with the following ratio of components 50: 20: 20:10. The technological parameters of the raw material are studied: specific, volumetric and bulk mass, porosity, singularity of raw materials. The optimum degree of shredding of raw material is established, which helps to maximally remove biologically active substances and extractives. Experimental way is determined the optimal mode of collection, which can be recommended to the consumer to obtain the maximum therapeutic effect.

scholarly journals Mathematical Modelling of Process of Shaping of Sand-Pitch Mixes

2019 ◽  
pp. 810-817
Author(s):  
Vitaliy Yu. Kulikov ◽  
Evgeniy N. Eremin ◽  
Tatyana V. Kovalyova ◽  
Elena P. Scherbakova
Keyword(s):  
Mathematical Modelling ◽  
Technological Process ◽  
Static Loading ◽  
Gas Permeability ◽  
State Density ◽  
Technological Parameters ◽  
Different Types ◽  
Deformed State

This article considers mathematical dependences of properties of a casting mold on various parameters of her shaping. The competitiveness in production of castings depends on durability, reliability of the made details, ability to meet requirements and expectations of the consumer of production. Technological process of receiving castings most widespread now in the sandyargillaceous forms (SAF) not completely meets the modern requirements as it is characterized by different types of marriage: gas porosity, scorch, shrinkable sinks, blockages, hot and cold cracks, and others. The bigger quality of castings gives casting in the sand-pitch forms (SPF) in which the high gas permeability and durability are combined, they don’t resist shrinkage, don’t absorb moisture the stiffening alloy and aren’t inclined to an fallibility. However, one of shortcomings of this way of casting is rather high cost binding. One of the directions of decrease in an expense binding is use along with heating of mix for shaping of a cover and static loading. Other direction of decrease in a consumption of mix in general, and binding in particular, is determination of dependence of properties of a shell form on technological parameters that will promote management of properties of a form, decrease in marriage, etc. Formulas of the intense deformed state, density, amounts of heat of the sand-pitch form made at the same time in the conditions of heating and static loading are presented

DETERMINATION OF THE VALUE OF SINGLE RAPID VOLTAGE CHANGES IN NETWORKS SUPPLYIND ELEKTRIC WEIDING INSTALLATIONS

2019 ◽  
pp. 58-65
Author(s):  
Yryskeldi Kargabaev ◽  
Kubat Osmonaliev
Keyword(s):  
Power Systems ◽  
Power Supply ◽  
High Performance ◽  
Electromagnetic Compatibility ◽  
Electric Energy ◽  
Industrial Enterprises ◽  
Supply Systems ◽  
Required Quality

The article deals with the tasks of ensuring the required quality of electricity in modern power systems of industrial enterprises. The main tasks of designing and operating modern power supply systems for industrial enterprises are in addition to the rational choice of elements of power supply systems, it is also to ensure the required quality of electricity at the terminals of the power receivers. Ensuring the required quality of electricity is generally associated with the electromagnetic compatibility of the supplynetwork. The intensification of production processes is associated with the improvement of technological processes and the introduction of advanced technologies, with the use of high-performance equipment, in particular, valve converters, welding plants, powerful metalworking machines are being introduced. They are currently controlled using digital technology, these devices strictly impose high demands on the quality of electrical energy.In connection with the requirements of the quality of electricity, in the Russian Federation every 10-15 years new standards are developed, where the indicators of the quality of electric energy are normalized

Precedent support for decision-making in energy management

2020 ◽  
Vol 25 (2) ◽  
pp. 53-60
Author(s):  
Pleskach B.M. ◽  
Keyword(s):  
Energy Consumption ◽  
Technical Condition ◽  
Nonlinear Dependence ◽  
Energy Losses ◽  
Technological Systems ◽  
Technological Parameters ◽  
Software Modules ◽  
Restoration Work ◽  
Selection Of

The article presents an approach to the formation of a decision support system in the management of energy consumption of production technological systems. Such systems allow the company to detect and respond in a timely manner to the appearance of hidden energy losses, to carry out organizational measures aimed at energy saving and to optimize the timing and scope of repair and restoration work. The approach is based on the modeling of stationary sections of energy consumption, presented in the form of precedents, their accumulation and subsequent analysis in the space of influential technological parameters. In addition to the base of precedents, the system includes software modules for assessment and formation of the profile of hidden energy losses, modules of technical condition, forecast and formation of precedents. The analysis of precedents consists in the selection of similar cases of energy consumption, the formation of efficient energy consumption functions and the calculation of energy losses with its help. Hidden energy losses can be calculated in real time for all technological systems of the enterprise. This allows you to build a profile of energy losses of the enterprise. The advantage of this approach in comparison with the known ones is that it allows to adapt to technological systems with different energy sources. The article emphasizes that the method can work with the energy manager with both linear and nonlinear dependence of energy consumption on process parameters. However, the limitations of this approach are noted. Thus, the determination of latent energy losses and technical condition of the equipment requires the participation of qualified specialists of the enterprise, who must be able to analyze the results and propose measures to eliminate energy losses.

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