scholarly journals Diagnostic of Failure in Transmission System of Agriculture Tractors Using Predictive Maintenance Based Software

2019 ◽  
Vol 1 (1) ◽  
pp. 132-144
Author(s):  
Carlos da Silva ◽  
José Rodrigues de Sá ◽  
Rafael Menegatti
Keyword(s):  
Maintenance Phase ◽  
Transmission System ◽  
Repair Time ◽  
Predictive Maintenance ◽  
Technological Equipment ◽  
Machine Time ◽  
Agricultural Machinery ◽  
Clutch System ◽  
The Cost ◽  
Diagnostic Software

The expansion of services and technological equipment applied to the agribusiness sector grows year after year, e.g., tractors and agricultural machinery, which use systems shipped with sophisticated software that collaborate to aid, and optimize activities in the field. Maintenance of agricultural machinery, including tractors, is routine in the life of any farmer, especially the preventive and corrective maintenance. In this paper, the objective was to evaluate an alternative for the use of diagnostic software in the prediction of failures that may occur in the tractor clutch system. In this study, the PicoScope6 software was used to identify the failures in this system, and then, using the predictive maintenance phase, was compared with classic maintenance methods, allowed for estimating the necessary repair time. Results showed that software identified more precisely the mechanical components that presented failures. From the identification of failure components, a list of repairs and exchanges was estimated, and, when compared to the list of components generated by inspection without diagnostic software, the repair time was reduced by 88%, and the cost of repair in up to 93%. The availability of the equipment also increased as a result of the shorter repair time, thus maximizing the machine time in the field.

Parameters Of Technological Processes Reengineering

2020 ◽  
pp. 28-33
Keyword(s):  
Spatial Organization ◽  
Parametric Model ◽  
Practical Significance ◽  
Machine Time ◽  
Time Machine ◽  
Technological Processes ◽  
Technical Capability ◽  
Materials Used ◽  
The Cost ◽  
Qualitative Characteristics

The article is devoted to reengineering of technological processes - a method of their qualitative transformation on an innovative basis, which in turn assumes the availability of tools that make it possible to establish the economic efficiency and technical capability of such transformations of construction production, to identify the effect of their implementation. In this regard, the problem of forming a parametric model of reengineering of construction technological processes, which involves four enlarged groups of indicators that reflect the quantitative and qualitative characteristics of the processes: materials used, working time, machine time, spatial organization, is considered. It is established that parameters can have either an absolute (physical, cost) or relative (point, percentage) expression and also make their own decomposition. The practical significance of the provisions given in the article is determined by the development of methods of technical rationing, which leads to a reduction in the cost and duration of construction.

IMPROVEMENT OF INNOVATIVE ACTIVITY OF THE ENTERPRISE

2017 ◽  
Author(s):  
Nataliya Stoyanets ◽  
◽  
Mathias Onuh Aboyi ◽  
Keyword(s):  
Value Chain ◽  
Net Present Value ◽  
Successful Implementation ◽  
Innovative Development ◽  
Technological Equipment ◽  
Alliance Partner ◽  
Innovation Potential ◽  
Wide Range ◽  
Technological Platform ◽  
The Cost

The article defines that for the successful implementation of an innovative project and the introduction of a new product into production it is necessary to use advanced technologies and modern software, which is an integral part of successful innovation by taking into account the life cycle of innovations. It is proposed to consider the general potential of the enterprise through its main components, namely: production and technological, scientific and technical, financial and economic, personnel and actual innovation potential. Base for the introduction of technological innovations LLC "ALLIANCE- PARTNER", which provides a wide range of support and consulting services, services in the employment market, tourism, insurance, translation and more. To form a model of innovative development of the enterprise, it is advisable to establish the following key aspects: the system of value creation through the model of cooperation with partners and suppliers; creating a value chain; technological platform; infrastructure, determine the cost of supply, the cost of activities for customers and for the enterprise as a whole. The system of factors of influence on formation of model of strategic innovative development of the enterprise is offered. The expediency of the cost of the complex of technological equipment, which is 6800.0 thousand UAH, is economically calculated. Given the fact that the company plans to receive funds under the program of socio-economic development of Sumy region, the evaluation of the effectiveness of the innovation project, the purchase of technological equipment, it is determined that the payback period of the project is 3 years 10 months. In terms of net present value (NPV), the project under study is profitable. The project profitability index (PI) meets the requirements for a positive decision on project implementation> 1.0. The internal rate of return of the project (IRR) also has a positive value of 22% because it exceeds the discount rate.

Optimal Placement of FACTS Devices for Voltage Stability Improvement with Economic Consideration Using Firefly Algorithm

2019 ◽  
Vol 14 (1) ◽  
pp. 5-11
Author(s):  
S. Rajasekaran ◽  
S. Muralidharan
Keyword(s):  
Power Systems ◽  
Voltage Stability ◽  
Firefly Algorithm ◽  
Transmission System ◽  
Operating Conditions ◽  
Optimal Placement ◽  
Voltage Collapse ◽  
Facts Devices ◽  
The Cost ◽  
Bus System

Background: Increasing power demand forces the power systems to operate at their maximum operating conditions. This leads the power system into voltage instability and causes voltage collapse. To avoid this problem, FACTS devices have been used in power systems to increase system stability with much reduced economical ratings. To achieve this, the FACTS devices must be placed in exact location. This paper presents Firefly Algorithm (FA) based optimization method to locate these devices of exact rating and least cost in the transmission system. Methods: Thyristor Controlled Series Capacitor (TCSC) and Static Var Compensator (SVC) are the FACTS devices used in the proposed methodology to enhance the voltage stability of power systems. Considering two objectives of enhancing the voltage stability of the transmission system and minimizing the cost of the FACTS devices, the optimal ratings and cost were identified for the devices under consideration using Firefly algorithm as an optimization tool. Also, a model study had been done with four different cases such as normal case, line outage case, generator outage case and overloading case (140%) for IEEE 14,30,57 and 118 bus systems. Results: The optimal locations to install SVC and TCSC in IEEE 14, 30, 57 and 118 bus systems were evaluated with minimal L-indices and cost using the proposed Firefly algorithm. From the results, it could be inferred that the cost of installing TCSC in IEEE bus system is slightly higher than SVC.For showing the superiority of Firefly algorithm, the results were compared with the already published research finding where this problem was solved using Genetic algorithm and Particle Swarm Optimization. It was revealed that the proposed firefly algorithm gives better optimum solution in minimizing the L-index values for IEEE 30 Bus system. Conclusion: The optimal placement, rating and cost of installation of TCSC and SVC in standard IEEE bus systems which enhanced the voltage stability were evaluated in this work. The need of the FACTS devices was also tested during the abnormal cases such as line outage case, generator outage case and overloading case (140%) with the proposed Firefly algorithm. Outputs reveal that the recognized placement of SVC and TCSC reduces the probability of voltage collapse and cost of the devices in the transmission lines. The capability of Firefly algorithm was also ensured by comparing its results with the results of other algorithms.

ORGANIZATIONAL AND TECHNOLOGICAL PRINCIPLES FOR CREATION INNOVATION CENTERS

2020 ◽  
Vol 4 (141) ◽  
pp. 40-46
Author(s):  
ZOYA MISHINA ◽  
Keyword(s):  
Research Purpose ◽  
Service Research ◽  
Industrial Complex ◽  
Technological Equipment ◽  
Technical Service ◽  
Agricultural Machinery ◽  
Efficient Operation ◽  
Technological Base ◽  
Reliability Of Operation ◽  
Production Areas

Timely conducting of all types of maintenance and routine repairs is possible only in the conditions of an innovative service center, equipped with the necessary equipment and having a complex of facilities to ensure favorable conditions for technical service. (Research purpose) The research purpose is in identifying opportunities for updating the technical service system in the agro-industrial complex by creating innovative service centers to ensure highly efficient operation of agricultural machinery and equipment. (Materials and methods) The system of maintenance in agriculture is characterized by a significant decrease in efficiency due to physical and moral wear of equipment of repair and technical enterprises, low level and insufficient qualification of personnel and managers of enterprises of the agro-industrial complex. The availability of existing enterprises of the agro-industrial complex with production areas is no more than 50 percent, technological equipment is no more than 47 percent, and technological equipment and equipment for jobs are 15 and 40 percent. (Results and discussion) The modernization of the infrastructure of technical service of agricultural machinery is aimed at updating the technological base of machine repair. Repair and technical enterprises do not have the necessary equipment to perform a number of maintenance and routine repairs. The process of developing technical service infrastructure is significantly behind the level of structural and technological complexity of agricultural machinery. Due to technological requirements, complex components and assemblies, such as engines, hydraulic equipment, fuel pumps of domestic and imported agricultural machinery should not be repaired in the conditions of farms. (Conclusions) The high technological level of innovative technical service centers serves as a condition for efficient operation of production, ensuring its stability and reliability of operation, flexibility and adaptability, high intensity and waste-free operation.

Organizational and technological principles for improving technical service in the agro-industrial complex

2020 ◽  
pp. 4-9
Author(s):  
Z. N. Mishina
Keyword(s):  
High Capacity ◽  
Industrial Complex ◽  
Technological Equipment ◽  
Technical Service ◽  
Agricultural Machinery ◽  
Efficient Operation ◽  
Reliable Assessment ◽  
Technological Base ◽  
Technological Level ◽  
Reliability Of Operation

To ensure highly efficient operation of agricultural machinery and equipment, it is necessary to improve the system of technical services in agriculture by creating specialized service centers. The system of maintenance in agriculture is characterized by a significant decrease in efficiency due to critical physical and moral wear of equipment of repair and technical enterprises (RTP), low level and insufficient qualification of Executive personnel and managers of enterprises of the agro-industrial complex (AIC). These changes led to the loss of the majority of RTP for agriculture and their re-equipment for non-agricultural production. According to experts, in the service sectors of agriculture, there was a loss of technological production and a significant part of applied science. This is especially worrisome due to the catastrophic aging of cars and the lack of funds to replace them. It is necessary to improve the General condition of the equipment of repair shops, the availability of existing agricultural enterprises with production areas is no more than 50%, technological equipment — no more than 47%, and technological equipment and equipment of workplaces — 15% — 40%, respectively. The priority areas of modernization of the infrastructure of technical service of agricultural machinery are related to updating the technological base of machine repair. Based on a reliable assessment and analysis of the technological level of RTP, which takes into account a number of technological, technical, organizational and environmental factors of production. RTP does not have the necessary equipment and devices to perform a number of maintenance and maintenance operations. The process of developing the technical service infrastructure lags far behind the level of structural and technological complexity of agricultural machinery. Due to technological requirements, such complex components and assemblies as engines, hydraulic equipment, fuel pumps of domestic and imported agricultural machinery should not be repaired in the conditions of farms. In a number of works proved the following provision: evaluation of the technological level repair enterprises shall be based on the application of such methods and means of technological preparation of production, which correspond to the advanced achievements of science and technology, and provide high-capacity system maintenance to continuous improvement. A high technological level of technical service enterprises is a condition for efficient operation of any type of production, ensuring its stability and reliability of operation, flexibility and adaptability, high intensity and waste-free operation.

Influence of the cost of technological equipment of body production on indicators of efficiency of working processes

2021 ◽  
pp. 28-32
Author(s):  
Keyword(s):  
Quality Index ◽  
Production Efficiency ◽  
Statistical Data ◽  
The Body ◽  
Technological Equipment ◽  
Production Body ◽  
Body Production ◽  
The Cost ◽  
Efficiency Indicators ◽  
Selection Of

The possibilities for the development of bodywork in the context of the growing level of competition are analyzed in the article. The technological processes of bodywork are considered and the problem of choosing technological equipment is indicated. The statistical data about the efficiency indicators of company body divisions, operating in the body repair market in Krasnoyarsk, are presented. A composite quality index for the equipment of the bodywork department (using the example of body stocks) is proposed and calculated, and on its basis, some recommendations are given for companies which plan to enter the market of body repair services. Keywords: body production, body repair, body equipment, body production efficiency, selection of technological equipment

Metabolic costs of isometric force generation and maintenance of human skeletal muscle

2002 ◽  
Vol 282 (2) ◽  
pp. E448-E457 ◽  
Author(s):  
David W. Russ ◽  
Mark A. Elliott ◽  
Krista Vandenborne ◽  
Glenn A. Walter ◽  
Stuart A. Binder-Macleod
Keyword(s):  
Isometric Force ◽  
Maintenance Phase ◽  
Metabolic Cost ◽  
Force Generation ◽  
Medial Gastrocnemius ◽  
Single Frequency ◽  
Atp Turnover ◽  
Metabolic Costs ◽  
Force Maintenance ◽  
The Cost

During isometric contractions, no true work is performed, so the force-time integral (FTI) is often used to approximate isometric work. However, the relationship between FTI and metabolic cost is not as linear. We tested the hypothesis that this nonlinearity was due to the cost of attaining a given force being greater than that of maintaining it. The ATP consumed per contraction in the human medial gastrocnemius muscle ( n = 6) was determined by use of 31P-NMR spectroscopy during eight different electrical stimulation protocols. Each protocol consisted of 8 trains of a single frequency (20 or 80 Hz) and duration (300, 600, 1,200, or 1,800 ms) performed under ischemic conditions. The cost of force generation was determined from the ATP turnover during the short-duration trains that did not attain a steady force level. Estimates of the cost of force maintenance at each frequency were determined by subtracting the ATP turnover during the shorter-duration trains from the turnover during the long-duration trains. The force generation phase of an isometric contraction was indeed more metabolically costly than the force maintenance phase during both 20- and 80-Hz stimulation. Thus the mean rate of ATP hydrolysis appeared to decline as contraction duration increased. Interestingly, the metabolic costs of maintaining force during 20-Hz and 80-Hz stimulation were comparable, although different levels of force were produced.

Reliability Evaluation & Analysis of UHVDC Transmission System

2013 ◽  
Vol 860-863 ◽  
pp. 2107-2111
Author(s):  
Cong Zhao ◽  
Yuan Zeng ◽  
Guang Yu Lei
Keyword(s):  
High Voltage ◽  
Direct Current ◽  
Fault Tree Analysis ◽  
Transmission System ◽  
Repair Time ◽  
Analysis Method ◽  
Fault Probability ◽  
Tree Analysis ◽  
High Voltage Direct Current ◽  
Current Transmission

The reliability of UHVDC (ultra-high voltage direct current) transmission system is significant to the development of power grid. The paper selects dual 12-pulse converters on each pole to model and analyze the UHVDC transmission system. Firstly, the system is divided into six subsystems to evaluate the reliability by the fault tree analysis method. Then based on the fault frequency and the repair time of each subsystems bottom components, the paper calculates the fault frequency and the repair time of each subsystem. Using the frequency and duration method, the paper calculates the fault probability, fault frequency and repair time of the whole system. Finally, it is validated by the actual data of typical lines.

scholarly journals Justification of the parameter that determines the ability of turbochargers of agricultural machinery engines to function

2021 ◽  
Vol 37 ◽  
pp. 00052
Author(s):  
Robert Galimov ◽  
Ilgiz Galiev ◽  
Alexander Kulakov ◽  
Engel Galimov
Keyword(s):  
Pressure Drop ◽  
Agricultural Production ◽  
Experimental Studies ◽  
Agricultural Machinery ◽  
Individual System ◽  
Main Indicator ◽  
Experimental Values ◽  
The Individual ◽  
The Cost ◽  
Regular Mode

As a result of the analysis of statistics on the main failures of the turbocharger of tractor engines in agricultural production, it can be concluded that it is the condition of its bearing node, in the first place, determines the performance of the entire turbocharger. This ultimately affects the duration of the turbocharger rotor after the engine stops. The article considers the method of determining the rotation time of the turbocharger rotor by inertia depending on the following factors: the time of the pressure drop in the turbocharger grease system, the gap in the turbocharger bearing node, the frequency of rotation of the rotor before the engine stops. The results of experimental studies on the timing of the turbocharger rotor rotation after the engine stop for the regular mode of greasing the bearing node and when using an individual lubricant system are presented. Based on the experimental values obtained, it is concluded that the main indicator of the performance of the turbocharger is the duration of rotation of its rotor after the engine stops and the application of the individual system of lubrication of the bearing node of the turbocharger reduces the cost of bearing resource and increases the resource of the entire turbocharger of agricultural machinery engines at least twice.

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